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NSR database version of April 11, 2024.

Search: Author = I.Moore

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2024DE01      Phys.Lett. B 848, 138352 (2024)

R.P.de Groote, D.A.Nesterenko, A.Kankainen, M.L.Bissell, O.Beliuskina, J.Bonnard, P.Campbell, L.Canete, B.Cheal, C.Delafosse, A.de Roubin, C.S.Devlin, J.Dobaczewski, T.Eronen, R.F.Garcia Ruiz, S.Geldhof, W.Gins, M.Hukkanen, P.Imgram, R.Mathieson, A.Koszorus, I.D.Moore, I.Pohjalainen, M.Reponen, B.van den Borne, M.Vilen, S.Zadvornaya

Measurements of binding energies and electromagnetic moments of silver isotopes – A complementary benchmark of density functional theory

NUCLEAR MOMENTS 113,113m,115,115m,117,117m,119,119m,121,121m,123,123mAg; measured frequencies. 107,109Ag, 133Cs; deduced nuclear binding and excitation energies, J, magnetic dipole and electric quadrupole moments, the crucial role of the spin-orbit strength and time-odd mean fields play in the simultaneous description of electromagnetic moments and nuclear binding. Comparison with calculations performed with density functional theory (DFT). The JYFLTRAP mass spectrometer and the collinear laser spectroscopy beamline at the Ion Guide Isotope Separator On-Line (IGISOL) facility.

doi: 10.1016/j.physletb.2023.138352
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2024KO01      Eur.Phys.J. A 60, 20 (2024)

A.Koszorus, R.P.de Groote, B.Cheal, P.Campbell, I.D.Moore

Nuclear structure studies by collinear laser spectroscopy

doi: 10.1140/epja/s10050-024-01230-9
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2023GA20      Eur.Phys.J. A 59, 169 (2023)

Z.Gao, A.Solders, A.Al-Adili, O.Beliuskina, T.Eronen, A.Kankainen, M.Lantz, I.D.Moore, D.A.Nesterenko, H.Penttila, S.Pomp, H.Sjostrand, for the IGISOL Collaboration

Applying machine learning methods for the analysis of two-dimensional mass spectra

ATOMIC MASSES 129In, 129Sn, 129Sb; measured frequencies; deduced the isomeric yield ratios. Comparison with available data. The Phase-Imaging Ion-Cyclotron-Resonance technique, the Penning trap (JYFLTRAP).

doi: 10.1140/epja/s10050-023-01080-x
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2023GA27      Phys.Rev. C 108, 054613 (2023)

Z.Gao, A.Solders, A.Al-Adili, S.Cannarozzo, M.Lantz, S.Pomp, O.Beliuskina, T.Eronen, S.Geldhof, A.Kankainen, I.D.Moore, D.Nesterenko, H.Penttila, for the IGISOL Collaboration

Isomeric yield ratios in proton-induced fission of 238U

doi: 10.1103/PhysRevC.108.054613
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2023GE04      Phys.Rev. C 108, 045502 (2023)

Z.Ge, T.Eronen, A.de Roubin, M.Ramalho, J.Kostensalo, J.Kotila, J.Suhonen, D.A.Nesterenko, A.Kankainen, P.Ascher, O.Beliuskina, M.Flayol, M.Gerbaux, S.Grevy, M.Hukkanen, A.Husson, A.Jaries, A.Jokinen, I.D.Moore, P.Pirinen, J.Romero, M.Stryjczyk, V.Virtanen, A.Zadvornaya

β- decay Q-value measurement of 136Cs and its implications for neutrino studies

doi: 10.1103/PhysRevC.108.045502
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2023JA10      Eur.Phys.J. A 59, 263 (2023)

A.Jaries, M.Stryjczyk, A.Kankainen, T.Eronen, Z.Ge, M.Hukkanen, I.D.Moore, M.Mougeot, A.Raggio, W.Rattanasakuldilok, J.Ruotsalainen

Precision mass measurement of 173Hf for nuclear structure of 173Lu and the γ process

ATOMIC MASSES 173Hf; measured frequencies; deduced mass-excess value. Comparison with the Atomic Mass Evaluation 2020 (AME20), available data. The JYFLTRAP double Penning trap mass spectrometer, the Ion Guide Isotope Separator On-Line (IGISOL) facility at the University of Jyvaskyla, Finland.

doi: 10.1140/epja/s10050-023-01176-4
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2023JA11      Phys.Rev. C 108, 064302 (2023)

A.Jaries, M.Stryjczyk, A.Kankainen, L.Al Ayoubi, O.Beliuskina, P.Delahaye, T.Eronen, M.Flayol, Z.Ge, W.Gins, M.Hukkanen, D.Kahl, S.Kujanpaa, D.Kumar, I.D.Moore, M.Mougeot, D.A.Nesterenko, S.Nikas, H.Penttila, D.Pitman-Weymouth, I.Pohjalainen, A.Raggio, W.Rattanasakuldilok, A.de Roubin, J.Ruotsalainen, V.Virtanen

High-precision Penning-trap mass measurements of Cd and In isotopes at JYFLTRAP remove the fluctuations in the two-neutron separation energies

doi: 10.1103/PhysRevC.108.064302
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2023KO31      Sci. Rep. 13, 4783 (2023)

A.Koszorus, M.Block, P.Campbell, B.Cheal, R.P.de Groote, W.Gins, I.D.Moore, A.Ortiz-Cortes, A.Raggio, J.Warbinek

High-precision measurements of the hyperfine structure of cobalt ions in the deep ultraviolet range

ATOMIC PHYSICS 59Co; measured frequencies; deduced hyperfine parameters, a 100-fold improvement on the precision of the hyperfine A parameters, and furthermore present newly measured hyperfine B parameters. Collinear laser spectroscopy, the Ion Guide Separator On-Line (IGISOL) IV facility in Jyvaskyla, Finland.

doi: 10.1038/s41598-023-31378-1
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2023NI10      Phys.Rev.Lett. 131, 222503 (2023)

L.Nies, L.Canete, D.D.Dao, S.Giraud, A.Kankainen, D.Lunney, F.Nowacki, B.Bastin, M.Stryjczyk, P.Ascher, K.Blaum, R.B.Cakirli, T.Eronen, P.Fischer, M.Flayol, V.Girard Alcindor, A.Herlert, A.Jokinen, A.Khanam, U.Koster, D.Lange, I.D.Moore, M.Muller, M.Mougeot, D.A.Nesterenko, H.Penttila, C.Petrone, I.Pohjalainen, A.de Roubin, V.Rubchenya, Ch.Schweiger, L.Schweikhard, M.Vilen, J.Aysto

Further Evidence for Shape Coexistence in 79Znm near Doubly Magic 78Ni

ATOMIC MASSES 79Zn; measured frequencies, TOF; deduced the excitation energy of the 1/2+ isomer, the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band, shape coexistence. Comparison with state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations. The time-of-flight ion cyclotron resonance (TOF-ICR) method, the JYFLTRAP double Penning trap at the ion guide isotope separator on-line (IGISOL) facility in Jyvaskyla (Finland), and the multi-reflection time-of-flight mass spectrometer (MR-TOF MS) of ISOLTRAP at ISOLDE at CERN (Switzerland).

doi: 10.1103/PhysRevLett.131.222503
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2023PL01      Phys.Rev.Lett. 131, 222502 (2023)

P.Plattner, E.Wood, L.Al Ayoubi, O.Beliuskina, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.P.de Groote, C.S.Devlin, T.Eronen, L.Filippin, R.F.Garcia Ruiz, Z.Ge, S.Geldhof, W.Gins, M.Godefroid, H.Heylen, M.Hukkanen, P.Imgram, A.Jaries, A.Jokinen, A.Kanellakopoulos, A.Kankainen, S.Kaufmann, K.Konig, A.Koszorus, S.Kujanpaa, S.Lechner, S.Malbrunot-Ettenauer, P.Muller, R.Mathieson, I.Moore, W.Nortershauser, D.Nesterenko, R.Neugart, G.Neyens, A.Ortiz-Cortes, H.Penttila, I.Pohjalainen, A.Raggio, M.Reponen, S.Rinta-Antila, L.V.Rodriguez, J.Romero, R.Sanchez, F.Sommer, M.Stryjczyk, V.Virtanen, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Nuclear Charge Radius of 26mAl and Its Implication for Vud in the Quark Mixing Matrix

NUCLEAR MOMENTS 26,26m,27Al [from 27Al(p, d), E=25 MeV]; measured frequencies; deduced resonance spectrum, isotope shifts, mean square charge radii, log ft values. Collinear laser spectroscopy. The COLLAPS beamline at ISOLDE-CERN and the IGISOL CLS beamline.

doi: 10.1103/PhysRevLett.131.222502
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2023RE08      Phys.Rev. C 108, 014304 (2023)

E.Rey-herme, A.Raggio, M.Vandebrouck, I.Moore, I.Pohjalainen, C.Delafosse, R.de Groote, Z.Ge, S.Geldhof, M.Hukkanen, A.Kankainen, A.Koszorus, D.Nesterenko, J.Saren, B.Sulignano, Ch.Theisen, D.Thisse, A.P.Weaver

Level structure of 221Ac and 217Fr from decay spectroscopy, and reflection asymmetry in 221Ac

RADIOACTIVITY 225Pa(α)[from 232Th(p, X), E=65 MeV]; 221Ac(α)[from 225Pa(α)]; measured Eα, Iα, Eγ, Iγ, Eβ, Iβ, αγ-coin, αβ-coin; deduced α-decay particle energies and intensities, hindrance factors. 221Ac; deduced levels, J, π, ICC, δ, transition intensities, band structure. 217Fr; deduced levels, J, π. Comparison between the proposed level scheme for 221Ac and the level scheme of 223Ac. Comparison to self-consistent blocked Hartree-Fock-Bogoliubov calculations using the energy density functional SLy5s1. Ions implanted into a carbon foil surrounded by silicon and germanium detectors at the Ion Guide Isotope Separation On-Line (IGISOL) facility.

doi: 10.1103/PhysRevC.108.014304
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2022DE05      Phys.Lett. B 827, 136930 (2022)

R.P.de Groote, J.Moreno, J.Dobaczewski, A.Koszorus, I.Moore, M.Reponen, B.K.Sahoo, C.Yuan

Precision measurement of the magnetic octupole moment in 45Sc as a test for state-of-the-art atomic- and nuclear-structure theory

ATOMIC PHYSICS 45Sc; measured frequencies; deduced the hyperfine A, B and C-constants. Comparison with high-precision atomic calculations of the hyperfine fields of these states and second-order corrections.

doi: 10.1016/j.physletb.2022.136930
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2022DE07      Eur.Phys.J. A 58, 51 (2022)

C.Delafosse, A.Goasduff, A.Kankainen, D.Verney, L.Al Ayoubi, O.Beliuskina, L.Canete, T.Eronen, R.P.de Groote, M.Hukkanen, F.Ibrahim, A.Illana, A.Jaries, L.Lalanne, I.D.Moore, D.Nesterenko, H.Penttila, S.Rinta-Antila, A.de Roubin, D.Thisse, R.Thoer, G.Tocabens

First trap-assisted decay spectroscopy of the 81Ge ground state

RADIOACTIVITY 81Ge(β-)[from 232Th(p, X), E=35 MeV at the IGISOL facility of University of Jyvaskyla, followed by mass and charge separation using double Penning-trap mass spectrometer JYFLTRAP and ToF-ICR]; measured quadrupole excitation frequency, T1/2 of 81Ge g.s. decay by growth and decay timing, Eγ, Iγ, βγ-coin, γγ-coin. 81As; deduced levels, J, π, β feedings, logft, B(GT), doorway configurations. 81Ge; deduced T1/2 of only the g.s. as the known isomer in 81Ge not populated. Comparison of experimental 81As levels structure with shell-model calculations using JJ44B or JUN45 interactions, and with previous experimental results. Systematics of low-lying states in 71,73,75,77,79,81,83As; and those of the first and second 9/2+ states in 71,73,75,77,79,81,83As, 73,75,77,79,81,83,85Br, and 75,77,79,81,83,85,87,89Rb.

doi: 10.1140/epja/s10050-022-00698-7
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2022ER01      Phys.Lett. B 830, 137135 (2022)

T.Eronen, Z.Ge, A.de Roubin, M.Ramalho, J.Kostensalo, J.Kotila, O.Beliushkina, C.Delafosse, S.Geldhof, W.Gins, M.Hukkanen, A.Jokinen, A.Kankainen, I.D.Moore, D.A.Nesterenko, M.Stryjczyk, J.Suhonen

High-precision measurement of a low Q value for allowed β-decay of 131I related to neutrino mass determination

RADIOACTIVITY 131I(β-) [from U(p, X), E=30 MeV]; measured cyclotron frequency ratios; deduced Q-value, partial T1/2 for the transition. Comparison with the Atomic Mass Evaluation 2020, theoretical calculations. The double Penning trap mass spectrometer JYFLTRAP at the IGISOL facility, the K-130 cyclotron.

doi: 10.1016/j.physletb.2022.137135
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2022GA10      Eur.Phys.J. A 58, 27 (2022)

Z.Gao, A.Al-Adili, L.Canete, T.Eronen, D.Gorelov, A.Kankainen, M.Lantz, A.Mattera, I.D.Moore, D.A.Nesterenko, H.Penttila, I.Pohjalainen, S.Pomp, V.Rakopoulos, S.Rinta-Antila, M.Vilen, J.Aysto, A.Solders

Benchmark of a multi-physics Monte Carlo simulation of an ion guide for neutron-induced fission products

NUCLEAR REACTIONS U(n, F), Ti(n, X), E<30 MeV; measured reaction products, Eγ, Iγ. 95Zr, 95Nb, 99Mo, 103Ru, 127Sb, 131,132I, 140Ba, 140La, 141Ce, 143Ce, 147Nd, 46Sc, 47Ca, 48Sc, 237U; deduced R values for each observed γ-ray transition belonging to fission products. Comparison with GEF, MCNPX and Geant4 calculations. The University of Jyvaskyla, the Ion Guide Isotope Separator On-Line (IGISOL) technique.

doi: 10.1140/epja/s10050-022-00676-z
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2022GE04      Phys.Rev.Lett. 128, 152501 (2022)

S.Geldhof, M.Kortelainen, O.Beliuskina, P.Campbell, L.Caceres, L.Canete, B.Cheal, K.Chrysalidis, C.S.Devlin, R.P.de Groote, A.de Roubin, T.Eronen, Z.Ge, W.Gins, A.Koszorus, S.Kujanpaa, D.Nesterenko, A.Ortiz-Cortes, I.Pohjalainen, I.D.Moore, A.Raggio, M.Reponen, J.Romero, F.Sommer

Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes

NUCLEAR MOMENTS 98,99,100,101,102Pd, 104,105,106Pd, 108,110,112,114,116,118Pd; measured frequencies; deduced isotope shifts and resulting changes in mean-square charge radii, precise relationship between nuclear quadrupole deformation and the nuclear size. Comparison with quadrupole deformation energy calculations.

doi: 10.1103/PhysRevLett.128.152501
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2022GE07      Phys.Rev. C 106, 015502 (2022)

Z.Ge, T.Eronen, A.de Roubin, J.Kostensalo, J.Suhonen, D.A.Nesterenko, O.Beliuskina, R.de Groote, C.Delafosse, S.Geldhof, W.Gins, M.Hukkanen, A.Jokinen, A.Kankainen, J.Kotila, A.Koszorus, I.D.Moore, A.Raggio, S.Rinta-Antila, V.Virtanen, A.P.Weaver, A.Zadvornaya

Direct determination of the atomic mass difference of the pairs 76As-76Se and 155Tb-155Gd rules out 76As and 155Tb as possible candidates for electron (anti)neutrino mass measurements

ATOMIC MASSES 76As, 76Se; 155Tb, 155Gd; measured cyclotron frequency ratios using phase-imaging ion-cyclotron-resonance technique (PI-ICR) and high-precision Penning-trap mass spectrometry (PTMS) with a double Penning trap mass spectrometer (JYFLTRAP) at the IGISOL facility of the University of Jyvaskyla; deduced precise Q(β) values for 76As β- decay to 76Se and 155Tb ϵ decay to 155Gd. Comparison with evaluated data in AME2020.

RADIOACTIVITY 76As(β-); 155Tb(EC); deduced precise Q(β) values from measurements of difference in mass excesses of 76As, 76Se, and 155Tb, 155Gd pairs; excluded these two cases as potential candidates for the search of ultra-low Q values for determination of electron-(anti)neutrino mass. Comparison with evaluated data in AME2020.

doi: 10.1103/PhysRevC.106.015502
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2022GE11      Phys.Lett. B 832, 137226 (2022)

Z.Ge, T.Eronen, A.de Roubin, K.S.Tyrin, L.Canete, S.Geldhof, A.Jokinen, A.Kankainen, J.Kostensalo, J.Kotila, M.I.Krivoruchenko, I.D.Moore, D.A.Nesterenko, J.Suhonen, M.Vilen

High-precision electron-capture Q value measurement of 111In for electron-neutrino mass determination

RADIOACTIVITY 111In(EC) [from In(p, X), E=130 MeV]; measured Ramsey time-of-flight ion-cyclotron resonance (TOF-ICR), cyclotron frequency ratios; deduced Q-values to the ground and excited states. Comparison with AME2020 and the microscopic interacting boson-fermion model (IBFM-2) calculations. Ion Guide Isotope Separator On-Line facility (IGISOL) utilizing the JYFLTRAP double Penning trap mass spectrometer.

doi: 10.1016/j.physletb.2022.137226
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2022GI08      Phys.Lett. B 833, 137309 (2022)

S.Giraud, L.Canete, B.Bastin, A.Kankainen, A.F.Fantina, F.Gulminelli, P.Ascher, T.Eronen, V.Girard Alcindor, A.Jokinen, A.Khanam, I.D.Moore, D.A.Nesterenko, F.de Oliveira Santos, H.Penttila, C.Petrone, I.Pohjalainen, A.De Roubin, V.A.Rubchenya, M.Vilen, J.Aysto

Mass measurements towards doubly magic 78Ni: Hydrodynamics versus nuclear mass contribution in core-collapse supernovae

ATOMIC MASSES 74,75Ni, 76,76m,77,78Cu, 79,79mZn; measured cyclotron resonance frequencies using time-of-flight ion-cyclotron-resonance (TOF-ICR) technique at the ISISOL-JYFLTRAP facility of the University of Jyvaskyla; deduced mass excesses, and compared with previously available experimental values and with AME2020 evaluation. Isotopes produced in U(p, F), E=35 MeV at the Ion-Guide Isotope Separator On-Line (IGISOL) facility in Jyvaskyla, followed by mass separation of fission fragments. Z=26-39, N=44-51; systematics of experimental and theoretical values of two-neutron shell-gap energies.

doi: 10.1016/j.physletb.2022.137309
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2022GU09      Phys.Rev. C 106, 014306 (2022)

V.Guadilla, L.Le Meur, M.Fallot, J.A.Briz, M.Estienne, L.Giot, A.Porta, A.Cucoanes, T.Shiba, A.-A.Zakari-Issoufou, A.Algora, J.L.Tain, J.Agramunt, D.Jordan, M.Monserrate, A.Montaner-Piza, E.Nacher, S.E.A.Orrigo, B.Rubio, E.Valencia, J.Aysto, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, J.Koponen, I.Moore, H.Penttila, I.Pohjalainen, J.Reinikainen, M.Reponen, S.Rinta-Antila, K.Rytkonen, V.Sonnenschein, A.Voss, L.M.Fraile, V.Vedia, E.Ganioglu, W.Gelletly, M.Lebois, J.N.Wilson, T.Martinez, A.A.Sonzogni

Total absorption γ-ray spectroscopy of the β decays of 96gs, mY

RADIOACTIVITY 96,96mY(β-)[from U(p, F), followed by separation of fragments using IGISOL-JYFLTRAP double Penning trap system]; measured Eγ, Iγ, total absorption γ-spectrum (TAGS), βγ-coin using 18 NaI(Tl) crystals and a thin plastic β detector, fission products 96Sr, 96Y and 96mY, conversion electrons from the E0 g.s. transition from the 0+ excited state in 96Zr; deduced electron spectrum from a Monte Carlo simulation, experimental module-multiplicity-gated TAGS spectra, β-feedings to the g.s. and excited levels in 96Zr listed in the Supplemental Material of the paper, average γ , β, and conversion electron energies. Comparison with β feedings in the 96Y and 96mY decay datasets in the ENSDF database. Comparison of average γ , β, and conversion electron energies with those in the ENDF/B-VII.1 and JEFF-3.3 databases. 235U; deduced reactor antineutrino spectrum. 96mY; deduced as a major contributor to reactor decay heat in uranium-plutonium and thorium-uranium fuels around 10 s after fission pulses from reactor summation calculations.

doi: 10.1103/PhysRevC.106.014306
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2022KU09      Phys.Rev. C 105, 034316 (2022)

J.Kurpeta, A.Abramuk, T.Rzaca-Urban, W.Urban, L.Canete, T.Eronen, S.Geldhof, M.Gierlik, J.P.Greene, A.Jokinen, A.Kankainen, I.D.Moore, D.A.Nesterenko, H.Penttila, I.Pohjalainen, M.Reponen, S.Rinta-Antila, A.de Roubin, G.S.Simpson, A.G.Smith, M.Vilen

β- and γ-spectroscopy study of 119Pd and 119Ag

RADIOACTIVITY 119,119mPd(β-)[from 253U(p, F), E=25 MeV]; measured Eβ, Iβ, Eγ, Iγ, βγ-coin, γγ-coin, γγ∓coin; deduced β-branching ratios, logft, T1/2. 252Cf(SF); measured Eγ, Iγ, γ(θ), γγγ-coin. 119Pd; levels, J, π, T1/2 for ground state and proposed 11/2- isomer. 119Ag; deduced levels, J, π, multipolarities, ICC, δ, structure of rotational band. Discovered 2 separate bands in 119Ag possibly feeded by 2 different β-decaying states in 119Pd. Systematics of low-energy excitations in odd-A isotopes of Rh, Ag, In, and selected low-energy levels in odd-A nuclei of cadmium (109Cd, 111Cd, 113Cd, 115Cd, 117Cd, 119Cd, 121Cd, 123Cd), the isotones of palladium. Isotopes of 119Pd were separated and purified using IGISOL technique and JYFLTRAP Penning trap. Gammas from 252Cf spontaneous fission were measured with Gammasphere array at ANL.

doi: 10.1103/PhysRevC.105.034316
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2022RZ01      Phys.Rev. C 106, 024322 (2022)

T.Rzaca-Urban, K.Sieja, M.Czerwinski, J.Kurpeta, M.Pomorski, W.Urban, J.Wisniewski, M.Wroblewski, L.Canete, T.Eronen, S.Geldhof, A.Jokinen, A.Kankainen, I.D.Moore, D.Nesterenko, H.Penttila, I.Pohjalainen, S.Rinta-Antila, A.de Roubin, M.Vilen

Low-spin excitations in 89Br populated in β- decay of 89Se

RADIOACTIVITY 89Se(β-), (β-n)[from U(p, F), E=30 MeV, followed by separation of fragments using Ion Guide Isotope Separator On-Line (IGISOL) facility and JYFLTRAP at Jyvaskyla]; measured fission fragment yields, Eγ, Iγ, γγ-coin. 89Se; deduced J, π, T1/2, %β-n or Pn for g.s. decay. 89Br; deduced levels, J, π, multipolarities, β feedings, Gamow-Teller transition, logft, configurations, occupation of neutron and proton orbitals. 88Br; deduced levels, J, π. Comparison with large-scale shell-model calculations. Systematics of level energies, J, π in 83,85,87As, 69,71,73,75,77,79,81,83,85,87,89Br, 87,89,91Rb, 89,91,93Y, 91,93,95Nb.

doi: 10.1103/PhysRevC.106.024322
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2021GE04      Phys.Rev. C 103, 065502 (2021)

Z.Ge, T.Eronen, A.de Roubin, D.A.Nesterenko, M.Hukkanen, O.Beliuskina, R.de Groote, S.Geldhof, W.Gins, A.Kankainen, A.Koszorus, J.Kotila, J.Kostensalo, I.D.Moore, A.Raggio, S.Rinta-Antila, J.Suhonen, V.Virtanen, A.P.Weaver, A.Zadvornaya, A.Jokinen

Direct measurement of the mass difference of 72As - 72Ge rules out 72As as a promising β-decay candidate to determine the neutrino mass

ATOMIC MASSES 72As; measured cyclotron frequency and mass excess by phase-imaging ion-cyclotron-resonance (PI-ICR) technique using IGISOL facility and JYFLTRAP double Penning trap mass spectrometer at the K-130 cyclotron of the University of Jyvaskyla, with the production of 72As in Ge(d, X), E=9 MeV reaction. 72As, 72Ge; deduced precise Q values for ϵ decay between the ground state of 72As and ground as well as excited states of 72Ge. Relevance to electron neutrino mass determination through precise mass measurements.

doi: 10.1103/PhysRevC.103.065502
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2021GE11      Phys.Rev.Lett. 127, 272301 (2021)

Z.Ge, T.Eronen, K.S.Tyrin, J.Kotila, J.Kostensalo, D.A.Nesterenko, O.Beliuskina, R.de Groote, A.de Roubin, S.Geldhof, W.Gins, M.Hukkanen, A.Jokinen, A.Kankainen, A.Koszorus, M.I.Krivoruchenko, S.Kujanpaa, I.D.Moore, A.Raggio, S.Rinta-Antila, J.Suhonen, V.Virtanen, A.P.Weaver, A.Zadvornaya

159Dy Electron-Capture: A New Candidate for Neutrino Mass Determination

RADIOACTIVITY 159Dy(EC); measured frequencies; deduced Q-values for allowed Gamow-Teller transition, J, π, total decay constant. The Ion Guide Isotope Separator On-Line facility (IGISOL) using the double Penning trap mass spectrometer JYFLTRAP in the accelerator laboratory of the University of Jyvaskyla.

doi: 10.1103/physrevlett.127.272301
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2021KO26      Phys.Lett. B 819, 136439 (2021)

A.Koszorus, L.J.Vormawah, R.Beerwerth, M.L.Bissell, P.Campbell, B.Cheal, C.S.Devlin, T.Eronen, S.Fritzsche, S.Geldhof, H.Heylen, J.D.Holt, A.Jokinen, S.Kelly, I.D.Moore, T.Miyagi, S.Rinta-Antila, A.Voss, C.Wraith

Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc

NUCLEAR MOMENTS 42,43,44,45,46Sc; measured frequencies; deduced hyperfine spectrum, magnetic dipole, electric quadrupole parameters, rms radii. Comparison with the shell-model and IMSRG calculations.

doi: 10.1016/j.physletb.2021.136439
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2020CA08      Phys.Rev. C 101, 041304 (2020), Erratum Phys.Rev. C 103, 029901 (2021)

L.Canete, S.Giraud, A.Kankainen, B.Bastin, F.Nowacki, A.Poves, P.Ascher, T.Eronen, V.Alcindor, A.Jokinen, A.Khanam, I.D.Moore, D.A.Nesterenko, F.De Oliveira Santos, H.Penttila, C.Petrone, I.Pohjalainen, A.de Roubin, V.A.Rubchenya, M.Vilen, J.Aysto

Precision mass measurements of 67Fe and 69, 70Co: Nuclear structure toward N = 40 and impact on r-process reaction rates

ATOMIC MASSES 67Fe, 69,69m,70Co; measured mass excesses using time of flight-ion cyclotron resonance technique with the JYFLTRAP double Penning trap mass spectrometer. 69mCo; deduced level energy of 1/2- intruder state. Comparison with evaluated data in AME2016. Systematics of S(2n) values and two-neutron shell gap parameter for Z=25-28, N=35-45 nuclei.

NUCLEAR STRUCTURE 67,69,71Co; calculated levels, J, π using shell-model for the spherical and 1/2- intruder bands. Comparison with experimental data.

NUCLEAR REACTIONS 68Fe, 69Co(γ, n), T=0.5-5 GK; calculated astrophysical reaction rates, and mass-related uncertainties for the astrophysical r process calculations.

doi: 10.1103/PhysRevC.101.041304
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2020DE20      Phys.Rev.Lett. 124, 222503 (2020)

A.de Roubin, J.Kostensalo, T.Eronen, L.Canete, R.P.de Groote, A.Jokinen, A.Kankainen, D.A.Nesterenko, I.D.Moore, S.Rinta-Antila, J.Suhonen, M.Vilen

High-Precision Q-Value Measurement Confirms the Potential of 135Cs for Absolute Antineutrino Mass Scale Determination

RADIOACTIVITY 135Cs(β-); measured decay products, frequencies; deduced ground-state-to-ground-state β-decay Q-value. Comparison with AME 2016 data.

doi: 10.1103/PhysRevLett.124.222503
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2020GU26      Phys.Rev. C 102, 064304 (2020)

V.Guadilla, J.L.Tain, A.Algora, J.Agramunt, D.Jordan, M.Monserrate, A.Montaner-Piza, S.E.A.Orrigo, B.Rubio, E.Valencia, J.A.Briz, A.Cucoanes, M.Estienne, M.Fallot, L.Le Meur, A.Porta, T.Shiba, A.-A.Zakari-Issoufou, J.Aysto, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, V.S.Kolhinen, J.Koponen, I.D.Moore, H.Penttila, I.Pohjalainen, J.Reinikainen, M.Reponen, S.Rinta-Antila, K.Rytkonen, V.Sonnenschein, A.Voss, L.M.Fraile, V.Vedia, E.Ganioglu, W.Gelletly, M.Lebois, J.N.Wilson, T.Martinez, E.Nacher, A.A.Sonzogni

Determination of β-decay ground state feeding of nuclei of importance for reactor applications

RADIOACTIVITY 95Rb, 100,102mNb, 100,103Tc, 137I, 140Cs(β-); measured total absorption gamma spectra (TAGS) and 4πγ-β-coin using 18-fold segmented NaI(Tl) Decay Total Absorption γ-ray Spectrometer (DTAS), and a thick plastic scintillation detector for β radiation at the Ion Guide Isotope Separator On-Line (IGISOL) IV facility of the University of Jyvaskyla; deduced β- feeding to the ground states of daughter nuclei from TAGS as well as 4πγ-β-coin methods, and compared with evaluated data in the ENSDF database, and contribution to the reactor antineutrino spectra of 235U and 239Pu at different energies using the Nantes summation method. 87,88Br, 94Rb(β-); previously measured TAGS data used to standardize analysis procedures and determine various correction factors.

doi: 10.1103/PhysRevC.102.064304
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2020NE06      Phys.Lett. B 808, 135642 (2020)

D.A.Nesterenko, A.Kankainen, J.Kostensalo, C.R.Nobs, A.M.Bruce, O.Beliuskina, L.Canete, T.Eronen, E.R.Gamba, S.Geldhof, R.de Groote, A.Jokinen, J.Kurpeta, I.D.Moore, L.Morrison, Zs.Podolyak, I.Pohjalainen, S.Rinta-Antila, A.de Roubin, M.Rudigier, J.Suhonen, M.Vilen, V.Virtanen, J.Aysto

Three beta-decaying states in 128In and 130In resolved for the first time using Penning-trap techniques

ATOMIC MASSES 128,128m,130,130mIn; measured time-of-flight ion cyclotron resonance (TOF-ICR) frequencies for the ground states and two isomers each in 128In and 128In using the JYFLTRAP Penning trap at the IGISOL facility at the University of Jyvaskyla; deduced mass excesses of three beta-decaying states each in 128In and 130In, and energies of respective isomers, configurations. Activities of 128,130In produced as fission products in U(p, F), E=30 MeV at the Ion Guide Isotope Separator On-Line (IGISOL) facility. Comparison with literature values. 128Sn, 128In, 130In; calculated levels, J, π, configurations using shell-model with the effective interaction jj45pna, and compared with experimental data.

RADIOACTIVITY 128mIn(β-)[from U(p, F), E=30 MeV at the IGISOL facility]; measured Eγ, Iγ, βγ-coin, half-life of the new (16+) isomer of 128In. 128Sn; deduced levels, J, π.

COMPILATION 130,131,132,133,134Te, 129,130,131,132,133Sb, 128,129,130,131,132Sn, 127,128,129,130,131In, 126,127,128,129,130Cd; compiled ground and isomeric states using data from the ENSDF and XUNDL databases, together with results for In isomers in the present work.

doi: 10.1016/j.physletb.2020.135642
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2020PO01      Nucl.Instrum.Methods Phys.Res. B463, 441 (2020)

I.Pohjalainen, I.D.Moore, T.Sajavaara

Characterization of 233U alpha recoil sources for 229(m)Th beam production

RADIOACTIVITY 233U(α); analyzed available data; deduced alpha recoil sources for the production of a thorium ion source to study the low-energy isomer in 229Th with high-resolution collinear laser spectroscopy at the IGISOL facility of the University of Jyvaskyla.

doi: 10.1016/j.nimb.2019.04.027
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2020VI04      Phys.Rev. C 101, 034312 (2020)

M.Vilen, J.M.Kelly, A.Kankainen, M.Brodeur, A.Aprahamian, L.Canete, R.P.de Groote, A.de Roubin, T.Eronen, A.Jokinen, I.D.Moore, M.R.Mumpower, D.A.Nesterenko, J.O'Brien, A.Pardo Perdomo, H.Penttila, M.Reponen, S.Rinta-Antila, R.Surman

Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP

ATOMIC MASSES 154Nd, 161Pm, 163Sm, 162,162m,163,164,165Eu, 163,163m,167Gd, 165,166,167,168Tb; measured time-of-flight ion-cyclotron-resonances (TOF-ICR) and phase-imaging ion-cyclotron-resonances (PI-ICR), frequency ratios, mass excesses using the JYFLTRAP double penning trap at the IGISOL facility of University of Jyvaskyla; deduced S(n), S(2n), pairing-gap energies, and average proton neutron interaction of valence nucleons. 162mEu, 163mGd; deduced absolute energies of the isomers. Comparison with previous experimental measurements, and with evaluated data in AME2016. Isotopes formed in U(p, F), E=25 MeV reaction. Discussed impact on solar r-process abundances as a function of the mass number.

doi: 10.1103/PhysRevC.101.034312
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2019AN10      Phys.Rev. C 99, 064313 (2019), Erratum Phys.Rev. C 107, 029901 (2023)

S.A.S.Andres, C.Hornung, J.Ebert, W.R.Plass, T.Dickel, H.Geissel, C.Scheidenberger, J.Bergmann, F.Greiner, E.Haettner, C.Jesch, W.Lippert, I.Mardor, I.Miskun, Z.Patyk, S.Pietri, A.Pihktelev, S.Purushothaman, M.P.Reiter, A.-K.Rink, H.Weick, M.I.Yavor, S.Bagchi, V.Charviakova, P.Constantin, M.Diwisch, A.Finlay, S.Kaur, R.Knobel, J.Lang, B.Mei, I.D.Moore, J.-H.Otto, I.Pohjalainen, A.Prochazka, C.Rappold, M.Takechi, Y.K.Tanaka, J.S.Winfield, X.Xu

High-resolution, accurate multiple-reflection time-of-flight mass spectrometry for short-lived, exotic nuclei of a few events in their ground and low-lying isomeric states

ATOMIC MASSES 93,94Ru, 94Rh, 96,97Pd, 100Ag, 107Cd, 114,116,133,134Te, 114,134Sb, 117,119,133,134I, 119Xe, 124,125,126Cs, 211,212,213Fr, 211Po, 212,213,218,220Rn, 212,217At; 134mSb, 133mTe, 133m,134mI, 134mXe, 211mPo; measured mass excess and isomer energies using multiple-reflection time-of-flight mass spectrometry (MR-TOF-MS) with the FRS Ion Catcher at GSI. Isotopes produced in 9Be(238U, F), E=300, 1000 MeV/nucleon; 9Be(124Xe, X), E=600 MeV/nucleon reactions using FRS separator at GSI. Comparison with AME-2016 evaluation. Systematics of S(2n) values in N=123-136 Pb, Bi, Po, At, Rn, Fr, Ra, Ac, Th isotopes, and compared with theoretical predictions.

doi: 10.1103/PhysRevC.99.064313
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2019GU03      Phys.Rev.Lett. 122, 042502 (2019)

V.Guadilla, A.Algora, J.L.Tain, M.Estienne, M.Fallot, A.A.Sonzogni, J.Agramunt, J.Aysto, J.A.Briz, A.Cucoanes, T.Eronen, L.M.Fraile, E.Ganioglu, W.Gelletly, D.Gorelov, J.Hakala, A.Jokinen, D.Jordan, A.Kankainen, V.Kolhinen, J.Koponen, M.Lebois, L.Le Meur, T.Martinez, M.Monserrate, A.Montaner-Piza, I.Moore, E.Nacher, S.E.A.Orrigo, H.Penttila, I.Pohjalainen, A.Porta, J.Reinikainen, M.Reponen, S.Rinta-Antila, B.Rubio, K.Rytkonen, T.Shiba, V.Sonnenschein, E.Valencia, V.Vedia, A.Voss, J.N.Wilson, A.-A.Zakari-Issoufou

Large Impact of the Decay of Niobium Isomers on the Reactor ν-bare Summation Calculations

RADIOACTIVITY 100,102Nb(β-); measured decay products, Eγ, Iγ. 239,241Pu, 235,238U; deduced β-intensity distributions, potential impact on reactor antineutrino spectra as a function of energy.

doi: 10.1103/PhysRevLett.122.042502
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2019GU20      Phys.Rev. C 100, 024311 (2019)

V.Guadilla, A.Algora, J.L.Tain, J.Agramunt, J.Aysto, J.A.Briz, A.Cucoanes, T.Eronen, M.Estienne, M.Fallot, L.M.Fraile, E.Ganioglu, W.Gelletly, D.Gorelov, J.Hakala, A.Jokinen, D.Jordan, A.Kankainen, V.Kolhinen, J.Koponen, M.Lebois, L.Le Meur, T.Martinez, M.Monserrate, A.Montaner-Piza, I.Moore, E.Nacher, S.E.A.Orrigo, H.Penttila, I.Pohjalainen, A.Porta, J.Reinikainen, M.Reponen, S.Rinta-Antila, B.Rubio, K.Rytkonen, P.Sarriguren, T.Shiba, V.Sonnenschein, A.A.Sonzogni, E.Valencia, V.Vedia, A.Voss, J.N.Wilson, A.-A.Zakari-Issoufou

Total absorption γ-ray spectroscopy of niobium isomers

RADIOACTIVITY 100,100m,102,102mNb, 100,102Zr, 103Tc(β-)[from U(p, F), E=25 MeV at the IGISOL facility and JYFLTRAP double Penning trap system at the university of Jyvaskyla]; measured Eγ, Iγ, Eβ, βγ-coin, total absorption γ spectrum using Decay Total Absorption γ-ray Spectrometer (DTAS) with 18 NaI(Tl) crystals, a plastic β detector and an HPGe detector; deduced average γ and β energies, impact on antineutrino spectrum summation calculations. Comparison with evaluated data in ENSDF, ENDF/B-VII.1 and JEFF-3.1.1 databases. 100,100mNb, 102Nb(β-); deduced absolute γ-intensities deexciting the main levels in 100,102Mo, and compared to data in the ENSDF database.

doi: 10.1103/PhysRevC.100.024311
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2019GU29      Phys.Rev. C 100, 044305 (2019)

V.Guadilla, J.L.Tain, A.Algora, J.Agramunt, D.Jordan, M.Monserrate, A.Montaner-Piza, E.Nacher, S.E.A.Orrigo, B.Rubio, E.Valencia, M.Estienne, M.Fallot, L.Le Meur, J.A.Briz, A.Cucoanes, A.Porta, T.Shiba, A.-A.Zakari-Issoufou, A.A.Sonzogni, J.Aysto, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, V.S.Kolhinen, J.Koponen, I.D.Moore, H.Penttila, I.Pohjalainen, J.Reinikainen, M.Reponen, S.Rinta-Antila, K.Rytkonen, V.Sonnenschein, A.Voss, L.M.Fraile, V.Vedia, E.Ganioglu, W.Gelletly, M.Lebois, J.N.Wilson, T.Martinez

Total absorption γ-ray spectroscopy of the β-delayed neutron emitters 137I and 95Rb

RADIOACTIVITY 95Rb, 137I(β-), (β-n)[from U(p, X), E=25 MeV, and separated using IGISOL separator and JYFL trap at Jyvaskyla]; measured Eγ, Iγ, total-absorption γ (TAGS) spectra, β-gated TAGS spectra using Decay Total Absorption γ-ray Spectrometer (DTAS) with 18 NaI(Tl) crystals, a plastic β detector and an HPGe detector; deduced β-intensity distributions, absolute γ intensities per 100 decays for the main levels populated in daughter nuclei, integral Iβγ or Pγ values above S(n), competition of γ and neutron emissions above S(n) and compared with Hauser-Feshbach calculations, average γ and β energies; evaluated impact of the present results on reactor antineutrino summation calculations. Comparison with previous experimental data, and with evaluated data in ENSDF, ENDF/B-VII.1 and JEFF-3.1.1.

doi: 10.1103/PhysRevC.100.044305
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2019KI08      Phys.Rev.Lett. 123, 262701 (2019)

O.S.Kirsebom, S.Jones, D.F.Stromberg, G.Martinez-Pinedo, K.Langanke, F.K.Ropke, B.A.Brown, T.Eronen, H.O.U.Fynbo, M.Hukkanen, A.Idini, A.Jokinen, A.Kankainen, J.Kostensalo, I.Moore, H.Moller, S.T.Ohlmann, H.Penttila, K.Riisager, S.Rinta-Antila, P.C.Srivastava, J.Suhonen, W.H.Trzaska, J.Aysto

Discovery of an Exceptionally Strong β-Decay Transition of 20F and Implications for the Fate of Intermediate-Mass Stars

RADIOACTIVITY 20F(β-) [from 19F(d, X), E=6 MeV]; measured decay products, Eβ, Iβ; deduced transition strength.

doi: 10.1103/PhysRevLett.123.262701
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2019KU16      Phys.Rev. C 100, 034316 (2019)

J.Kurpeta, A.Plochocki, W.Urban, A.Abramuk, L.Canete, T.Eronen, A.Fijalkowska, S.Geldhof, K.Gotowicka, A.Jokinen, A.Kankainen, I.D.Moore, D.Nesterenko, H.Penttila, I.Pohjalainen, M.Pomorski, M.Reponen, S.Rinta-Antila, A.de Roubin, T.Rzaca-Urban, M.Vilen, J.Wisniewski

First β-decay scheme of 107Nb: New insight into the low-energy levels of 107Mo

RADIOACTIVITY 107Nb(β-)[from U(p, F), E=25 MeV from the K-130 cyclotron at the University of Jyvaskyla, followed by separation of fission fragments using IGISOL-4 for mass separation, and JYFLTRAP Penning trap for isobaric purification]; measured yields of Mo and Nb ions, Eγ, Iγ, γγ- and βγ-coin, γ(Kα x-ray)-coin, half-life of the decay of 107Nb using a plastic scintillator for β particles and three Ge detectors for low-energy γ rays. 107Mo; deduced levels, J, π, bands, K-conversion coefficients for three transitions, total conversion coefficient for one transition, multipolarities, β feedings, logft. Systematics of energies of the first and second 1/2+ levels in N=55-71, Z(even)=40-46. Comparison of the experimental γ-ray transition intensities between low-lying levels in 105Mo and 107Mo. Discussed the revised energy of the 420-ns isomer.

doi: 10.1103/PhysRevC.100.034316
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2019RA01      Phys.Rev. C 99, 014617 (2019)

V.Rakopoulos, M.Lantz, S.Pomp, A.Solders, A.Al-Adili, L.Canete, T.Eronen, A.Jokinen, A.Kankainen, A.Mattera, I.D.Moore, D.A.Nesterenko, M.Reponen, S.Rinta-Antila, A.de Roubin, M.Vilen, M.Osterlund, H.Penttila

Isomeric fission yield ratios for odd-mass Cd and In isotopes using the phase-imaging ion-cyclotron-resonance technique

NUCLEAR REACTIONS U(p, F)81Ge/81mGe/119Cd/119mCd/121Cd/121mCd/123Cd/123mCd/125Cd/125mCd/127Cd/127mCd/119In/119mIn/121In/121mIn/123In/123mIn/125In/125mIn/127In/127mIn/129Sb/129mSb, E=25 MeV; measured isomeric yield ratios of fission products using the JYFLTRAP double Penning trap, and phase-imaging ion cyclotron-resonance (PI-ICR) technique at IGISOL facility of University of Jyvaskyla; deduced average rms angular momentum using TALYS code, and correlation between electric quadrupole moments and average angular momentum for In and Cd isotopes.

doi: 10.1103/PhysRevC.99.014617
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2395.


2019VE05      Phys.Rev. C 100, 024315 (2019)

M.Verlinde, S.Kraemer, J.Moens, K.Chrysalidis, J.G.Correia, S.Cottenier, H.De Witte, D.V.Fedorov, V.N.Fedosseev, R.Ferrer, L.M.Fraile, S.Geldhof, C.A.Granados, M.Laatiaoui, T.A.L.Lima, P.-C.Lin, V.Manea, B.A.Marsh, I.Moore, L.M.C.Pereira, S.Raeder, P.Van den Bergh, P.Van Duppen, A.Vantomme, E.Verstraelen, U.Wahl, S.G.Wilkins

Alternative approach to populate and study the 229Th nuclear clock isomer

RADIOACTIVITY 229mTh(IT)[from β- decay of 229Ac produced in U(p, X), E=1.4 GeV reaction, via a laser ion source at ISOLDE-CERN]; proposed an alternative method to produce the low-energy isomer in 229Th at 7.6 eV after the implantation of 229Ac ions in a large-band gap CaF2 host. Discussed benefits of using 229Ac ion beam in contrast to common use of α decay of 233U for the study of half-life and excitation energy of the 229Th isomer. Preparatory experiments, testing key ingredients of this concept, were conducted at ISOLDE-CERN.

doi: 10.1103/PhysRevC.100.024315
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2019VI05      Phys.Rev. C 100, 054333 (2019)

M.Vilen, A.Kankainen, P.Baczyk, L.Canete, J.Dobaczewski, T.Eronen, S.Geldhof, A.Jokinen, M.Konieczka, J.Kostensalo, I.D.Moore, D.A.Nesterenko, H.Penttila, I.Pohjalainen, M.Reponen, S.Rinta-Antila, A.de Roubin, W.Satula, J.Suhonen

High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL

ATOMIC MASSES 82Zr, 84Nb, 86Mo, 88Tc, 88mTc, 89Ru; measured cyclotron frequencies, time-of-flight, and mass excesses using time-of-flight ion-cyclotron resonance (TOF-ICR), and phase-imaging ion-cyclotron resonance (PI-ICR) techniques at the University of Jyvaskyla accelerator laboratory; deduced S(2n), S(2p) and neutron-pairing gap energies. 82Mo, 86Ru; predicted mass excesses using the measured masses of their mirror partners and theoretical mirror displacement energies. Comparison with AME-2016 values, and with other recent measurements. 88Tc; deduced levels, J, π of the ground state and isomer, and compared with shell-model predictions.

NUCLEAR REACTIONS Ni(36Ar, X)82Zr/84Nb/86Mo/88Tc/88mTc/89Ru, E=222 MeV; measured reaction products and yields using the HIGISOL system, mass separated using a radio-frequency sextupole ion guide (SPIG), and injected into the double-Penning-trap mass spectrometer JYFLTRAP at Jyvaskyla.

doi: 10.1103/PhysRevC.100.054333
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2019WI11      Phys.Rev. C 100, 054331 (2019)

J.Wisniewski, W.Urban, M.Czerwinski, J.Kurpeta, A.Plochocki, M.Pomorski, T.Rzaca-Urban, K.Sieja, L.Canete, T.Eronen, S.Geldhof, A.Jokinen, A.Kankainen, I.D.Moore, D.A.Nesterenko, H.Penttila, I.Pohjalainen, S.Rinta-Antila, A.de Roubin, M.Vilen

Excited states in 87Br populated in β decay of 87Se

RADIOACTIVITY 87Se(β-)[from Th(p, F), E=25 MeV using the IGISOL technique, then separated on a dipole magnet and JYFLTRAP Penning trap setup]; measured Eγ, Iγ, γγ-coin using an array of six high-resolution Ge detectors with thin carbon windows at the University of Jyvaskyla. 87Br; deduced levels, J, π, β feedings, logft values, configurations. 87Se; deduced ground-state Jπ. Comparison with large-scale shell-model calculations, and with previous experimental results.

doi: 10.1103/PhysRevC.100.054331
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2018BU16      Phys.Rev. C 98, 064320 (2018)

B.Bucher, H.Mach, A.Aprahamian, L.M.Robledo, G.S.Simpson, J.Rissanen, D.G.Ghita, B.Olaizola, W.Kurcewicz, J.Aysto, T.Eronen, L.M.Fraile, A.Jokinen, P.Karvonen, I.D.Moore, H.Penttila, M.Reponen, E.Ruchowska, A.Saastamoinen, M.K.Smith, C.Weber

New insights into triaxiality and shape coexistence from odd-mass 109Rh

RADIOACTIVITY 109Ru(β-)[from U(p, F), E=30 MeV]; measured Eγ, Iγ, γγ-coin, level half-lives using fast timing βγγ(t) technique at the IGISOL facility of University of Jyvaskyla. 109Rh; deduced levels, J, π, B(M1), B(E2).

NUCLEAR STRUCTURE 109Rh; calculated potential energy surface (PES) in (β, γ) plane, proton single-particle energies as function of deformation parameters Q0 and γ, minimum energy E(β, γ) for the different blocked configurations using HFB method.

doi: 10.1103/PhysRevC.98.064320
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2018CA22      Phys.Rev. C 98, 034310 (2018)

R.Caballero-Folch, I.Dillmann, J.Agramunt, J.L.Tain, A.Algora, J.Aysto, F.Calvino, L.Canete, G.Cortes, C.Domingo-Pardo, T.Eronen, E.Ganioglu, W.Gelletly, D.Gorelov, V.Guadilla, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, J.Koponen, M.Marta, E.Mendoza, A.Montaner-Piza, I.Moore, C.R.Nobs, S.E.A.Orrigo, H.Penttila, I.Pohjalainen, J.Reinikainen, A.Riego, S.Rinta-Antila, B.Rubio, P.Salvador-Castineira, V.Simutkin, A.Tarifeno-Saldivia, A.Tolosa-Delgado, A.Voss

First determination of β-delayed multiple neutron emission beyond A-100 through direct neutron measurement: The P2n value of 136Sb

RADIOACTIVITY 136Sb(β-), (β-n), (β-2n), 136Te(β-), (β-n)[from U(p, F), E=25 MeV]; measured Eβ-, Iβ-, E(n), I(n), β- and neutron time correlated events, %β-n (or P1n) for decays of 136Sb and 136Te, and %β-2n (or P2n) for decay of 136Sb using JYFLTRAP Penning trap for isotope separation, plastic scintillator for β detection, and BELEN array of 3He counter tubes for neutron detection at the University of Jyvaskyla accelerator facility. Comparison with previous experimental values, evaluated data, and with several theoretical predictions.

doi: 10.1103/PhysRevC.98.034310
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2018KU13      Phys.Rev. C 98, 024318 (2018)

J.Kurpeta, A.Plochocki, W.Urban, T.Eronen, A.Jokinen, A.Kankainen, V.S.Kolhinen, I.D.Moore, H.Penttila, M.Pomorski, S.Rinta-Antila, T.Rzaca-Urban, J.Wisniewski

Excited levels in the multishaped 117Pd nucleus studied via β decay of 117Rh

RADIOACTIVITY 117Rh(β-)[from 238U(p, F), E=25 MeV followed by separation of 117Rh using IGISOL-4 mass separator coupled to the JYFLTRAP Penning trap at Jyvaskyla]; measured Eγ, Iγ, Pd x-rays, βγ-, (x-ray)γ- and γγ-coin, half-life of 117Rh decay from γ-decay curves using plastic scintillator for β detection and Ge detectors for γ detection. 117Pd; deduced levels, J, π, β feedings, logft values, configurations, Gamow-Teller transition strengths. 117Rh; deduced preliminary J and π of ground state from theoretical calculations and systematics of Rh isotopes. Systematics of low-spin levels in odd A=101-119 Rh isotopes and odd A=103-117 Pd isotopes, isomeric states and γ transitions in odd A=105-117 Pd isotopes, and negative-parity levels in odd A, N=57-71 Mo, Ru, and Pd isotopes.

doi: 10.1103/PhysRevC.98.024318
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2018MA24      Eur.Phys.J. A 54, 33 (2018)

A.Mattera, S.Pomp, M.Lantz, V.Rakopoulos, A.Solders, A.Al-Adili, H.Penttila, I.D.Moore, S.Rinta-Antila, T.Eronen, A.Kankainen, I.Pohjalainen, D.Gorelov, L.Canete, D.Nesterenko, M.Vilen, J.Aysto

Production of Sn and Sb isotopes in high-energy neutron-induced fission of natU

NUCLEAR REACTIONS U(n, F), E=30 MeV[end energy of white neutron spectrum30 MeV, weighted neutron energy about 12 MeV]; measured Eγ, Iγ. 129,130,131Sn, 130,132Sb; deduced cumulative fission yields, isomeric yield ratios, calculated yields using GEF model. Compared with other data and with ENDF/B-VII.1, JEFF 3.1.1.

doi: 10.1140/epja/i2018-12462-1
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2018NE09      Eur.Phys.J. A 54, 154 (2018)

D.A.Nesterenko, T.Eronen, A.Kankainen, L.Canete, A.Jokinen, I.D.Moore, H.Penttila, S.Rinta-Antila, A.de Roubin, M.Vilen

Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer


2018RA19      Phys.Rev. C 98, 024612 (2018)

V.Rakopoulos, M.Lantz, A.Solders, A.Al-Adili, A.Mattera, L.Canete, T.Eronen, D.Gorelov, A.Jokinen, A.Kankainen, V.S.Kolhinen, I.D.Moore, D.A.Nesterenko, H.Penttila, I.Pohjalainen, S.Rinta-Antila, V.Simutkin, M.Vilen, A.Voss, S.Pomp

First isomeric yield ratio measurements by direct ion counting and implications for the angular momentum of the primary fission fragments

NUCLEAR REACTIONS U, 232Th(p, F)81Ge/81mGe/96Y/96mY/97Y/97mY/128Sn/128mSn/130Sn/130mSn/129Sb/129mSb, E=25 MeV; measured fission fragment time of flight, mass, isomeric yield ratios using JYFLTRAP for fragment separation and microchannel plate for particle detection at IGISOL-Jyvaskyla facility. Comparison with theoretical calculations of fission fragment isomeric yield ratios and rms spin of fragments using GEF code and TALYS code with constant temperature Fermi gas model, back-shifted Fermi gas model (BSFG), and the microscopic level densities of Goriely. Comparison with previous experimental values.

doi: 10.1103/PhysRevC.98.024612
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2018VI02      Phys.Rev.Lett. 120, 262701 (2018)

M.Vilen, J.M.Kelly, A.Kankainen, M.Brodeur, A.Aprahamian, L.Canete, T.Eronen, A.Jokinen, T.Kuta, I.D.Moore, M.R.Mumpower, D.A.Nesterenko, H.Penttila, I.Pohjalainen, W.S.Porter, S.Rinta-Antila, R.Surman, A.Voss, J.Aysto

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r-Process Calculations

ATOMIC MASSES 156,158Nd, 158,160Pm, 162Sm, 162,163Eu, 163,164,165,166Gd, 164Tb; measured time-of-flight spectra, frequency ratios; deduced mass-excess values. Comparison with AME16 evaluation.

doi: 10.1103/PhysRevLett.120.262701
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2017BI04      Phys.Rev. A 95, 032503 (2017)

P.V.Bilous, G.A.Kazakov, I.D.Moore, T.Schumm, A.Palffy

Internal conversion from excited electronic states of 229Th ions

NUCLEAR STRUCTURE 229Th; calculated internal conversion coefficients, lifetimes of the excited electronic states, internal conversion rates. Comparison with available data.

doi: 10.1103/PhysRevA.95.032503
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2017CA09      Acta Phys.Pol. B48, 517 (2017)

R.Caballero-Folch, I.Dillmann, J.Agramunt, J.L.Tain, C.Domingo-Pardo, A.Algora, J.Aysto, F.Calvino, L.Canete, G.Cortes, T.Eronen, E.Ganioglu, W.Gelletly, D.Gorelov, V.Guadilla, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, J.Koponen, M.Marta, E.Mendoza, A.Montaner-Piza, I.Moore, Ch.Nobs, S.Orrigo, H.Penttila, I.Pohjalainen, J.Reinikainen, A.Riego, S.Rinta-Antila, B.Rubio, P.Salvador-Castineira, V.Simutkin, A.Voss

First Evidence of Multiple β-delayed Neutron Emission for Isotopes with A > 100

NUCLEAR REACTIONS 238U(p, x), E=25 MeV; measured (after selecting isotopes of interest) Iβ, β-delayed In, En, In, nn correlations using BELEN neutron detector; deduced the heaviest β2n emitter measured so far, namely 136Sb.

doi: 10.5506/APhysPolB.48.517
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2017CZ01      Phys.Rev. C 95, 024321 (2017)

M.Czerwinski, K.Sieja, T.Rzaca-Urban, W.Urban, A.Plochocki, J.Kurpeta, J.Wisniewski, H.Penttila, A.Jokinen, S.Rinta-Antila, L.Canete, T.Eronen, J.Hakala, A.Kankainen, V.S.Kolhinen, J.Koponen, I.D.Moore, I.Pohjalainen, J.Reinikainen, V.Simutkin, A.Voss, I.Murray, C.Nobs

Penning-trap-assisted study of excitations in 88Br β decay of 88Se

RADIOACTIVITY 88Se(β-)[from U(p, F), E=30 MeV using Ion Guide Isotope Separator On-Line (IGISOL) facility and JYFLTRAP at Jyvaskyla]; measured yields of fission fragments, Eγ, Iγ, βγ- and γγ-coin, half-life of an isomer by γ(t). 88Br; deduced levels, J, π, total conversion coefficients from intensity balances, multipolarities, β feedings, log ft, configurations, comparison with large-scale shell-model calculations.

NUCLEAR STRUCTURE 88Br; calculated levels, J, π, occupation of neutron and proton orbitals using large-scale shell-model. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.024321
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2017ER01      Phys.Rev. C 95, 025501 (2017); Pub.Note Phys.Rev. C 102, 039902 (2020)

T.Eronen, J.C.Hardy, L.Canete, A.Jokinen, J.Hakala, A.Kankainen, V.S.Kolhinen, J.Koponen, I.D.Moore, I.M.Murray, H.Penttila, I.Pohjalainen, O.Poleshchuk, J.Reinikainen, S.Rinta-Antila, N.Soukouti, A.Voss, J.Aysto

QEC value of the superallowed β emitter 42Sc

ATOMIC MASSES 42,42mSc, 42Ca; measured cyclotron frequency ratios using time-of-flight ion-cyclotron resonance (TOF-ICR) technique at IGISOL-JYFLTRAP facility at Jyvaskyla; deduced precise Q values and compared with previous experimental data, precise energy of the 7+ isomeric state in 42Sc; discussed error budgets for Ft values of superallowed β transition in 42Sc.

doi: 10.1103/PhysRevC.95.025501
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2017FE10      Nat. Commun. 8, 14520 (2017)

R.Ferrer, A.Barzakh, B.Bastin, R.Beerwerth, M.Block, P.Creemers, H.Grawe, R.de Groote, P.Delahaye, X.Flechard, S.Franchoo, S.Fritzsche, L.P.Gaffney, L.Ghys, W.Gins, C.Granados, R.Heinke, L.Hijazi, M.Huyse, T.Kron, Yu.Kudryavtsev, M.Laatiaoui, N.Lecesne, M.Loiselet, F.Lutton, I.D.Moore, Y.Martínez, E.Mogilevskiy, P.Naubereit, J.Piot, S.Raeder, S.Rothe, H.Savajols, S.Sels, V.Sonnenschein, J-C.Thomas, E.Traykov, C.Van Beveren, P.Van den Bergh, P.Van Duppen, K.Wendt, A.Zadvornaya

Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion

NUCLEAR MOMENTS 212,213,214,215,227Ac; measured frequencies; deduced hfs spectra, magnetic dipole and electric quadrupole moments. In-gas laser ionization and spectroscopy (IGLIS) technique.

doi: 10.1038/ncomms14520
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2017GR18      Phys.Rev. C 96, 054331 (2017)

C.Granados, P.Creemers, R.Ferrer, L.P.Gaffney, W.Gins, R.de Groote, M.Huyse, Yu.Kudryavtsev, Y.Martinez, S.Raeder, S.Sels, C.Van Beveren, P.Van den Bergh, P.Van Duppen, K.Wrzosek-Lipska, A.Zadvornaya, A.E.Barzakh, B.Bastin, P.Delahaye, L.Hijazi, N.Lecesne, F.Luton, J.Piot, H.Savajols, J.-C.Thomas, E.Traykov, R.Beerwerth, S.Fritzsche, M.Block, X.Flechard, S.Franchoo, L.Ghys, H.Grawe, R.Heinke, T.Kron, P.Naubereit, K.Wendt, M.Laatiaoui, I.Moore, V.Sonnenschein, M.Loiselet, E.Mogilevskiy, S.Rothe

In-gas laser ionization and spectroscopy of actinium isotopes near the N=126 closed shell

NUCLEAR MOMENTS 212,213,214,215,227Ac; measured optical hyperfine spectra by the in-gas laser ionization and spectroscopy (IGLIS) technique at the LISOL facility of Cyclotron Research Centre, Louvain-la-Neuve; deduced g factors, quadrupole moments and spins of the ground states, configurations. Comparison with large-scale nuclear-shell-model calculations. 212,213Ac produced in 197Au(20Ne, 5n), (20Ne, 4n), E=145 MeV. 214,215Ac produced in 197Au(22Ne, 5n), (22Ne, 4n), E=143 MeV.

RADIOACTIVITY 215Ac(α)[from 197Au(22Ne, 4n), E=143 MeV; measured Eα.

doi: 10.1103/PhysRevC.96.054331
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2017GU07      Acta Phys.Pol. B48, 529 (2017)

V.Guadilla, A.Algora, J.L.Tain, J.Agramunt, J.Aysto, J.A.Briz, A.Cucoanes, T.Eronen, M.Estienne, M.Fallot, L.M.Fraile, E.Ganioglu, W.Gelletly, D.Gorelov, J.Hakala, A.Jokinen, D.Jordan, A.Kankainen, V.Kolhinen, J.Koponen, M.Lebois, T.Martinez, M.Monserrate, A.Montaner-Piza, I.Moore, E.Nacher, S.E.A.Orrigo, H.Penttila, I.Pohjalainen, A.Porta, J.Reinikainen, M.Reponen, S.Rinta-Antila, B.Rubio, K.Rytkonen, T.Shiba, V.Sonnenschein, A.A.Sonzogni, E.Valencia, V.Vedia, A.Voss, J.N.Wilson, A.-A.Zakari-Issoufou

Study of the β Decay of Fission Products with the DTAS Detector

RADIOACTIVITY 103Mo, 103Tc(β-)[from U(p, f) reaction]; measured β-decay of both nuclei using DTAS (segmented Decay Total Absorption Gamma-Ray Spectrometer) detector;deduced mean γ-decay and β-decay energy, new β intensity (at high-energy end) not detected in previous measurements with Ge detectors. Mean energies compared with ENSDF.

doi: 10.5506/APhysPolB.48.529
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2017GU17      Phys.Rev. C 96, 014319 (2017)

V.Guadilla, A.Algora, J.L.Tain, J.Agramunt, D.Jordan, A.Montaner-Piza, S.E.A.Orrigo, B.Rubio, E.Valencia, J.Suhonen, O.Civitarese, J.Aysto, J.A.Briz, A.Cucoanes, T.Eronen, M.Estienne, M.Fallot, L.M.Fraile, E.Ganioglu, W.Gelletly, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, J.Koponen, M.Lebois, T.Martinez, M.Monserrate, I.Moore, E.Nacher, H.Penttila, I.Pohjalainen, A.Porta, J.Reinikainen, M.Reponen, S.Rinta-Antila, K.Rytkonen, T.Shiba, V.Sonnenschein, A.A.Sonzogni, V.Vedia, A.Voss, J.N.Wilson, A.-A.Zakari-Issoufou

Experimental study of 100Tc β decay with total absorption γ-ray spectroscopy

RADIOACTIVITY 100Tc(β-)[from 100Mo(p, n), E=8 MeV]; measured Eγ, Iγ, β spectrum using a vase-shaped plastic scintillator, βγ-coin, total absorption TAGS γ spectra using Decay Total Absorption γ-ray Spectrometer (DTAS), IGISOL-IV mass separator and JYFLTRAP Penning trap at the University of Jyvaskyla cyclotron facility; deduced β-intensity distribution extracted from the TAGS analysis, β feedings to g.s. and excited states of 100Ru, logft. Comparison with high-resolution decay data in the ENSDF database at NNDC-BNL, and with quasiparticle random-phase approximation calculations. Benchmark for calculations of the double β decay of 100Mo.

doi: 10.1103/PhysRevC.96.014319
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2017MA18      Eur.Phys.J. A 53, 77 (2017)

C.Magron, Ph.Alfaurt, B.Blank, L.Daudin, T.Eronen, M.Gerbaux, J.Giovinazzo, D.Gorelov, S.Grevy, H.Guerin, J.Hakala, V.S.Kolhinen, J.Koponen, T.Kurtukian Nieto, I.D.Moore, H.Penttila, I.Pohjalainen, J.Reinikainen, M.Reponen, S.Rinta-Antila, M.Roche, A.de Roubin, N.Smirnova, B.Thomas, A.Voss, L.Xayavong

Precise measurements of half-lives and branching ratios for the β mirror transitions in the decay of 23Mg and 27Si

RADIOACTIVITY 23Mg, 27Si(β+), (EC)[from 23Na, 27Si(p, n), E=15, 30 MeV]; measured Eβ, Iβ using plastic scintillator, Eγ, Iγ using Ge detector; deduced T1/2, super-allowed branching ratio. Compared with other published results.

doi: 10.1140/epja/i2017-12271-0
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2017MA57      Eur.Phys.J. A 53, 173 (2017)

A.Mattera, S.Pomp, M.Lantz, V.Rakopoulos, A.Solders, A.Al-Adili, E.Passoth, A.V.Prokofiev, P.Andersson, A.Hjalmarsson, R.Bedogni, D.Bortot, A.Esposito, A.Gentile, J.M.Gomez-Ros, M.V.Introini, A.Pola, D.Gorelov, H.Penttila, I.D.Moore, S.Rinta-Antila, V.S.Kolhinen, T.Eronen

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

doi: 10.1140/epja/i2017-12362-x
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2017NE05      J.Phys.(London) G44, 065103 (2017)

D.A.Nesterenko, A.Kankainen, L.Canete, M.Block, D.Cox, T.Eronen, C.Fahlander, U.Forsberg, J.Gerl, P.Golubev, J.Hakala, A.Jokinen, V.S.Kolhinen, J.Koponen, N.Lalovic, C.Lorenz, I.D.Moore, P.Papadakis, J.Reinikainen, S.Rinta-Antila, D.Rudolph, L.G.Sarmiento, A.Voss, J.Aysto

High-precision mass measurements for the isobaric multiplet mass equation at A = 52

ATOMIC MASSES 52Co, 52mCo, 52Fe, 52mFe, 52Mn; measured time-of-flight ion cyclotron resonance spectrum, average cyclotron frequency ratios; deduced mass-excess values. Comparison with Nubase2012 mass values.

doi: 10.1088/1361-6471/aa67ae
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2017RI08      Phys.Rev. C 96, 014320 (2017)

S.Rice, A.Algora, J.L.Tain, E.Valencia, J.Agramunt, B.Rubio, W.Gelletly, P.H.Regan, A.-A.Zakari-Issoufou, M.Fallot, A.Porta, J.Rissanen, T.Eronen, J.Aysto, L.Batist, M.Bowry, V.M.Bui, R.Caballero-Folch, D.Cano-Ott, V.-V.Elomaa, E.Estevez, G.F.Farrelly, A.R.Garcia, B.Gomez-Hornillos, V.Gorlychev, J.Hakala, M.D.Jordan, A.Jokinen, V.S.Kolhinen, F.G.Kondev, T.Martinez, P.Mason, E.Mendoza, I.Moore, H.Penttila, Zs.Podolyak, M.Reponen, V.Sonnenschein, A.A.Sonzogni, P.Sarriguren

Total absorption spectroscopy study of the β decay of 86Br and 91Rb

RADIOACTIVITY 86Br, 91Rb(β-)[from U(p, F), E not given, radioactive beams purified by JYFLTRAP Penning trap at Jyvaskyla]; measured Eγ, Iγ, βγ-coin, total absorption gamma spectrum (TAGS) using Valencia-Surrey Total Absorption Spectrometer Rocinante at the IGISOL facility of the University of Jyvaskyla; deduced mean average energy for β particles and γ rays, β spectra, B(GT) strengths, impact of the investigated decays in the prediction of decay heat and antineutrino spectrum from nuclear reactors. Comparison with previous experimental data, with the evaluated high-resolution decay data in the ENSDF database at NNDC-BNL, and with quasiparticle random-phase approximation calculations.

doi: 10.1103/PhysRevC.96.014320
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2017UR03      Phys.Rev. C 96, 044333 (2017)

W.Urban, M.Czerwinski, J.Kurpeta, T.Rzaca-Urban, J.Wisniewski, T.Materna, L.W.Iskra, A.G.Smith, I.Ahmad, A.Blanc, H.Faust, U.Koster, M.Jentschel, P.Mutti, T.Soldner, G.S.Simpson, J.A.Pinston, G.de France, C.A.Ur, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, J.Rissanen, A.Saastamoinen, J.Szerypo, C.Weber, J.Aysto

Shape coexistence in the odd-odd nucleus 98Y: The role of the g9/2 neutron extruder

NUCLEAR REACTIONS 235U(n, F), E=cold neutrons from PF1B facility at ILL Grenoble; measured Eγ, Iγ, γγ-coin, delayed γγ-coin, half-lives of several isomers in 98Y using the EXILL array at Grenoble. 98Y; deduced levels, isomers, J, π, bands, configurations, deformed and spherical isomers.

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), γγ-coin with γ rays from fission partner 147La in 248Cm SF decay using Eurogam2 array at Grenoble and Gammasphere array at Argonne. 98Y; deduced levels, J, π, multipolarities. 98Sr, 98,98mY(β-)[from 235U(n, F), E=cold neutrons and using Lohengrin fission-fragment separator]; measured Eγ, Iγ, γγ-coin, γγ(θ), γγ(linear pol), half-lives of decays of 98Sr, 98Y and 98Y isomer, excitation energy of the 2.36-s isomer in 98Y by using JYFLTRAP Penning trap at Jyvaskyla accelerator facility, . 98Y, 98Zr; deduced levels, J, π, multipolarities, mixing ratios, β feedings, logft, configurations. Comparison of negative-parity levels in 98Y with Interacting Boson Fermion Fermion Model (IBFFM) and Quasi-Particle Rotor Model (QPRM) calculations.

doi: 10.1103/PhysRevC.96.044333
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2017VA04      Phys.Rev. C 95, 024320 (2017)

E.Valencia, J.L.Tain, A.Algora, J.Agramunt, E.Estevez, M.D.Jordan, B.Rubio, S.Rice, P.Regan, W.Gelletly, Z.Podolyak, M.Bowry, P.Mason, G.F.Farrelly, A.Zakari-Issoufou, M.Fallot, A.Porta, V.M.Bui, J.Rissanen, T.Eronen, I.Moore, H.Penttila, J.Aysto, V.-V.Elomaa, J.Hakala, A.Jokinen, V.S.Kolhinen, M.Reponen, V.Sonnenschein, D.Cano-Ott, A.R.Garcia, T.Martinez, E.Mendoza, R.Caballero-Folch, B.Gomez-Hornillos, V.Gorlychev, F.G.Kondev, A.A.Sonzogni, L.Batist

Total absorption γ-ray spectroscopy of the β- delayed neutron emitters 87Br, 88Br, and 94Rb

RADIOACTIVITY 87,88Br, 94Rb(β-)[from U(p, F), E=25 MeV]; measured β-gated Eγ, Iγ, total absorption γ spectra (TAGS) using Rocinante TAS, IGISOL mass separator and JYFLTRAP Penning Trap at the University of Jyvaskyla cyclotron facility. 87Kr, 88Kr, 94Sr; deduced Iβ, β feedings, average γ- and β-decay energies, gamma-to-neutron branching ratio, reactor decay heat impact, reactor antineutrino spectrum impact. Comparison with previous data, and with Hauser-Feshbach calculations. Tables of the β-intensity distributions deduced in this work are supplied in supplementary file.

doi: 10.1103/PhysRevC.95.024320
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2016AG03      Nucl.Instrum.Methods Phys.Res. A807, 69 (2016)

J.Agramunt, J.L.Tain, M.B.Gomez Hornillos, A.R.Garcia, F.Albiol, A.Algora, R.Caballero-Folch, F.Calvino, D.Cano-Ott, G.Cortes, C.Domingo-Pardo, T.Eronen, W.Gelletly, D.Gorelov, V.Gorlychev, H.Hakala, A.Jokinen, M.D.Jordan, A.Kankainen, V.Kolhinen, L.Kucuk, T.Martinez, P.J.R.Mason, I.Moore, H.Penttila, Zs.Podolyak, C.Pretel, M.Reponen, A.Riego, J.Rissanen, B.Rubio, A.Saastamoinen, A.Tarifeno-Saldivia, E.Valencia

Characterization of a neutron-beta counting system with beta-delayed neutron emitters

RADIOACTIVITY 94,95Rb, 88Br, 137I(β-n); measured decay products, Eβ, Iβ, En, In; deduced neutron emission probabilities, β-spectra. Comparison with Monte Carlo calculations.

doi: 10.1016/j.nima.2015.10.082
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2016AL03      Phys.Rev.Lett. 116, 072501 (2016)

M.Alanssari, D.Frekers, T.Eronen, L.Canete, J.Dilling, M.Haaranen, J.Hakala, M.Holl, M.Jeskovsky, A.Jokinen, A.Kankainen, J.Koponen, A.J.Mayer, I.D.Moore, D.A.Nesterenko, I.Pohjalainen, P.Povinec, J.Reinikainen, S.Rinta-Antila, P.C.Srivastava, J.Suhonen, R.I.Thompson, A.Voss, M.E.Wieser

Single and Double Beta-Decay Q Values among the Triplet96Zr, 96Nb, and 96Mo

ATOMIC MASSES 96Zr, 96Nb, 96Mo; measured time-of-flight spectra using a Ramsey excitation pattern, cyclotron-frequency ratios; deduced Q-values for β and 2β-decays. Comparison with AME2012, IGISOL-JYFLTRAP facility.

doi: 10.1103/PhysRevLett.116.072501
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2016AL30      Int.J. Mass Spectrom. 406, 1 (2016)

M.Alanssari, D.Frekers, T.Eronen, L.Canete, J.Hakala, M.Holl, A.Jokinen, A.Kankainen, J.Koponen, I.D.Moore, D.A.Nesterenko, I.Pohjalainen, J.Reinikainen, S.Rinta-Antila, A.Voss

Precision 71Ga-71Ge mass-difference measurement

ATOMIC MASSES 71Ga, 71Ge; measured frequencies, TOF; deduced Q-values, solar neutrino flux.

doi: 10.1016/j.ijms.2016.05.019
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2016CA02      Prog.Part.Nucl.Phys. 86, 127 (2016)

P.Campbell, I.D.Moore, M.R.Pearson

Laser spectroscopy for nuclear structure physics

doi: 10.1016/j.ppnp.2015.09.003
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2016CA22      Eur.Phys.J. A 52, 124 (2016); Erratum Eur.Phys.J. A 52, 302 (2016)

L.Canete, A.Kankainen, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, V.S.Kolhinen, J.Koponen, I.D.Moore, J.Reinikainen, S.Rinta-Antila

High-precision mass measurements of 25Al and 30P at JYFLTRAP

NUCLEAR REACTIONS 25Al, 30P(p, γ), E=40 MeV; measured resonant proton-capture rates to several discrete states, frequency ratios using JYFLTRAP double Penning trap mass spectrometer; deduced mass excess. 25Al deduced EC Q-value. Compared to other data and AME03 and AME12 evaluations.

ATOMIC MASSES 25Al, 30P; measured Ramsey time-of-flight ion-cyclotron resonance spectra, frequency ratios; deduced mass-excess values.

doi: 10.1140/epja/i2016-16124-0
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2016FE11      Nat. Commun. 8, 14520 (2016), See 2017FE10

R.Ferrer, A.Barzakh, B.Bastin, R.Beerwerth, M.Block, P.Creemers, H.Grawe, R.de Groote, P.Delahaye, X.Flechard, S.Franchoo, S.Fritzsche, L.P.Gaffney, L.Ghys, W.Gins, C.Granados, R.Heinke, L.Hijazi, M.Huyse, T.Kron, Yu.Kudryavtsev, M.Laatiaoui, N.Lecesne, M.Loiselet, F.Lutton, I.D.Moore, Y.Martinez, E.Mogilevskiy, P.Naubereit, J.Piot, S.Raeder, S.Rothe, H.Savajols, S.Sels, V.Sonnenschein, J-C.Thomas, E.Traykov, C.Van Beveren, P.Van den Bergh, P.Van Duppen, K.Wendt, A.Zadvornaya

Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion

NUCLEAR MOMENTS 212,213,214,215,227Ac; measured frequencies; deduced nuclear magnetic moments, electric quadrupole moments, radii. Comparison with theoretical calculations, experimental data.

doi: 10.1038/ncomms14520
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2016GU22      Nucl.Instrum.Methods Phys.Res. B376, 334 (2016)

V.Guadilla, A.Algora, J.L.Tain, J.Agramunt, J.Aysto, J.A.Briz, D.Cano-Ott, A.Cucoanes, T.Eronen, M.Estienne, M.Fallot, L.M.Fraile, E.Ganioglu, W.Gelletly, D.Gorelov, J.Hakala, A.Jokinen, D.Jordan, A.Kankainen, V.Kolhinen, J.Koponen, M.Lebois, T.Martinez, M.Monserrate, A.Montaner-Piza, I.Moore, E.Nacher, S.Orrigo, H.Penttila, Zs.Podolyak, I.Pohjalainen, A.Porta, P.Regan, J.Reinikainen, M.Reponen, S.Rinta-Antila, B.Rubio, K.Rytkonen, T.Shiba, V.Sonnenschein, A.A.Sonzogni, E.Valencia, V.Vedia, A.Voss, J.N.Wilson, A.-A.Zakari-Issoufou

First experiment with the NUSTAR/FAIR Decay Total Absorption γ-Ray Spectrometer (DTAS) at the IGISOL IV facility

RADIOACTIVITY 137I(β-n); measured decay products, Eγ, Iγ, Eβ, Iβ; deduced mean β- and γ-ray energies, branching ratios. Comparison with ENSDF library.

doi: 10.1016/j.nimb.2015.12.018
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2016HE14      Phys.Rev. C 94, 054321 (2016)

H.Heylen, C.Babcock, R.Beerwerth, J.Billowes, M.L.Bissell, K.Blaum, J.Bonnard, P.Campbell, B.Cheal, T.Day Goodacre, D.Fedorov, S.Fritzsche, R.F.Garcia Ruiz, W.Geithner, Ch.Geppert, W.Gins, L.K.Grob, M.Kowalska, K.Kreim, S.M.Lenzi, I.D.Moore, B.Maass, S.Malbrunot-Ettenauer, B.Marsh, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, J.Papuga, R.Rossel, S.Rothe, R.Sanchez, Y.Tsunoda, C.Wraith, L.Xie, X.F.Yang, D.T.Yordanov

Changes in nuclear structure along the Mn isotopic chain studied via charge radii

ATOMIC PHYSICS 51,53,54,55,56,57,58,59,60,61,62,63,64Mn; measured hyperfine spectra using collinear laser spectroscopy at ISOLDE-CERN; deduced charge radii. Isotopes produced in bombardment of uranium carbide target with 1.4-GeV proton beam. Mass and field shift factors calculated in multiconfiguration Dirac-Fock framework and combined with King plot analysis. Comparison with Duflo-Zuker formula.

NUCLEAR STRUCTURE 53,55,57,59,61,63,65Mn; calculated potential energy surfaces using Monte Carlo shell-model. Systematics of S(2n) values for Z=20-28, N=24-46 nuclei.

doi: 10.1103/PhysRevC.94.054321
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2016KA15      Phys.Rev. C 93, 041304 (2016)

A.Kankainen, L.Canete, T.Eronen, J.Hakala, A.Jokinen, J.Koponen, I.D.Moore, D.Nesterenko, J.Reinikainen, S.Rinta-Antila, A.Voss, J.Aysto

Mass of astrophysically relevant 31Cl and the breakdown of the isobaric multiplet mass equation

ATOMIC MASSES 31Cl; measured TOF-ICR spectrum, and mass excess using JYFLTRAP double-Penning-trap mass spectrometer at the IGISOL facility in Jvyaskyla; analyzed isobaric multiplet mass equation (IMME) for T=3/2 quartet for A=31 nuclei 31Cl, 31S, 31P and 31Si; deduced breakdown of the IMME. 31Cl; deduced S(p), levels.

NUCLEAR REACTIONS 32S(p, 2n)31Cl, E=40 MeV; measured mass excess of 31Cl at the IGISOL facility in Jvyaskyla. 31Cl(γ, p)30S, T9=0.2-1.4; deduced reaction rates for typical XRB conditions. Relevance to rapid proton capture process in type-I x-ray bursts.

doi: 10.1103/PhysRevC.93.041304
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2016PE05      Eur.Phys.J. A 52, 104 (2016)

H.Penttila, D.Gorelov, V.-V.Elomaa, T.Eronen, U.Hager, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, I.D.Moore, J.Parkkonen, K.Perajarvi, I.Pohjalainen, S.Rahaman, S.Rinta-Antila, J.Rissanen, V.A.Rubchenya, A.Saastamoinen, V.Simutkin, T.Sonoda, C.Weber, A.Voss, J.Aysto

Independent isotopic yields in 25 MeV and 50 MeV proton-induced fission of natU

NUCLEAR REACTIONS U(p, F), E=25, 50 MeV; measured fission products using JYFLTRAP facility; deduced isotope yields from Zn to La. Compared with other measurements.

doi: 10.1140/epja/i2016-16104-4
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2015AL11      Eur.Phys.J. A 51, 59 (2015)

A.Al-Adili, K.Jansson, M.Lantz, A.Solders, D.Gorelov, C.Gustavsson, A.Mattera, I.Moore, A.V.Prokofiev, V.Rakopoulos, H.Penttila, D.Tarrio, S.Wiberg, M.Osterlund, S.Pomp

Simulations of the fission-product stopping efficiency in IGISOL

doi: 10.1140/epja/i2015-15059-2
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2015BA49      Phys.Lett. B 750, 176 (2015)

C.Babcock, H.Heylen, J.Billowes, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.F.Garcia Ruiz, C.Geppert, W.Gins, M.Kowalska, K.Kreim, S.M.Lenzi, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, D.T.Yordanov

Evidence for Increased neutron and proton excitations between 51-63Mn

NUCLEAR MOMENTS 51,52,53,54,55,56,57,58,59,60,61,62,63Mn; measured hyperfine structures; deduced J, magnetic dipole moments. Comparison with large-scale shell-model calculations using different model spaces and effective interactions.

doi: 10.1016/j.physletb.2015.09.012
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2015BU15      Phys.Rev. C 92, 064312 (2015)

B.Bucher, H.Mach, A.Aprahamian, G.S.Simpson, J.Rissanen, D.G.Ghita, B.Olaizola, W.Kurcewicz, J.Aysto, I.Bentley, T.Eronen, L.M.Fraile, A.Jokinen, P.Karvonen, I.D.Moore, H.Penttila, M.Reponen, E.Ruchowska, A.Saastamoinen, M.K.Smith, C.Weber

New lifetime measurements in 109Pd and the onset of deformation at N=60

RADIOACTIVITY 109Rh(β-)[from U(p, F), E=30 MeV at IGISOL facility of University of Jyvaskyla]; measured Eγ, Iγ, γγ-, βγγ-coin, level half-lives by fast timing βγγ(t) technique. 109Pd; deduced levels, J, π, configuration, B(M1), B(E2), B(E1); discussed strong pn interaction between πg9/2 and νg7/2 valence nucleons. Systematics of band structures, (d, p) and (d, t) spectroscopic strengths in 101,103,105,107,109,111Pd. Systematics of 7/2+ and 5/2+ states in odd-A Pd, Rh and Ag isotopes.

doi: 10.1103/PhysRevC.92.064312
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2015DI03      Phys.Lett. B 744, 137 (2015)

T.Dickel, W.R.Plass, S.Ayet San Andres, J.Ebert, H.Geissel, E.Haettner, C.Hornung, I.Miskun, S.Pietri, S.Purushothaman, M.P.Reiter, A.-K.Rink, C.Scheidenberger, H.Weick, P.Dendooven, M.Diwisch, F.Greiner, F.Heisse, R.Knobel, W.Lippert, I.D.Moore, I.Pohjalainen, A.Prochazka, M.Ranjan, M.Takechi, J.S.Winfield, X.Xu

First spatial separation of a heavy ion isomeric beam with a multiple-reflection time-of-flight mass spectrometer

NUCLEAR REACTIONS Be(238U, X)211Po, E=1000 MeV/nucleon; measured reaction products; deduced mass spectrum of 211Po ions in the ground and isomeric states, isomer excitation energy. Comparison with available data.

doi: 10.1016/j.physletb.2015.03.047
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2015GO14      Bull.Rus.Acad.Sci.Phys. 79, 869 (2015); Izv.Akad.Nauk RAS, Ser.Fiz 79, 963 (2015)

D.Gorelov, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, M.Lantz, A.Mattera, I.Moore, H.Penttila, I.Pohjalainen, S.Pomp, M.Reponen, S.Rinta-Antila, V.Rubchenya, A.Saastamoinen, V.Simutkin, A.Solders, V.Sonnenschein, J.Aysto

Measuring independent yields of fission products using a penning trap

NUCLEAR REACTIONS 232Th(p, F), E=25 MeV; measured fission products; deduced σ, yields. Comparison with FIPRODY model.

doi: 10.3103/S1062873815070114
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2015HE10      Acta Phys.Pol. B46, 699 (2015)

H.Heylen, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.F.Garcia Ruiz, Ch.Geppert, W.Gins, K.Kreim, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, D.T.Yordanov

Collinear Laser Spectroscopy on Neutron-rich Mn Isotopes Approaching N = 40

NUCLEAR REACTIONS U(p, X)51Mn/53Mn/54Mn/55Mn/56Mn/57Mn/58Mn/59Mn/60Mn/61Mn/62Mn/63Mn/64Mn, E=1.4 GeV; measured hyperfine spectra; deduced J, g-factors, quadrupole moments.

doi: 10.5506/APhysPolB.46.699
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2015HE28      Phys.Rev. C 92, 044311 (2015)

H.Heylen, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.F.Garcia Ruiz, Ch.Geppert, W.Gins, M.Kowalska, K.Kreim, S.M.Lenzi, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, D.T.Yordanov

Spins and magnetic moments of 58, 60, 62, 64Mn ground states and isomers

NUCLEAR MOMENTS 54,56,58,60,62,64Mn; measured hyperfine spectra using laser ion source (RILIS), high-resolution separator (HRS), cooler-buncher (ISCOOL), and collinear laser spectroscopy beam line (COLLAPS) at ISOLDE-CERN; deduced levels, J, hyperfine structure parameters, magnetic dipole, moments and electric quadrupole moments for ground states and isomers. Mn beams produced in U(p, X), E=1.4 GeV reaction. Comparison with large-scale shell-model calculations using GXPF1A and LNPS effective interactions.

doi: 10.1103/PhysRevC.92.044311
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2015TA17      Phys.Rev.Lett. 115, 062502 (2015)

J.L.Tain, E.Valencia, A.Algora, J.Agramunt, B.Rubio, S.Rice, W.Gelletly, P.Regan, A.-A.Zakari-Issoufou, M.Fallot, A.Porta, J.Rissanen, T.Eronen, J.Aysto, L.Batist, M.Bowry, V.M.Bui, R.Caballero-Folch, D.Cano-Ott, V.-V.Elomaa, E.Estevez, G.F.Farrelly, A.R.Garcia, B.Gomez-Hornillos, V.Gorlychev, J.Hakala, M.D.Jordan, A.Jokinen, V.S.Kolhinen, F.G.Kondev, T.Martinez, E.Mendoza, I.Moore, H.Penttila, Zs.Podolyak, M.Reponen, V.Sonnenschein, A.A.Sonzogni

Enhanced γ-Ray Emission from Neutron Unbound States Populated in β Decay

RADIOACTIVITY 87,88Br, 94Rb(β-), (β-n); measured decay products, Eβ, Iβ, En, In, Eγ, Iγ; deduced γ-ray branching ratio. Comparison with Hauser-Feshbach statistical calculations.

doi: 10.1103/PhysRevLett.115.062502
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2014AG12      Nucl.Data Sheets 120, 74 (2014)

J.Agramunt, A.R.Garcia, A.Algora, J.Aysto, R.Caballero-Folch, F.Calvino, D.Cano-Ott, G.Cortes, C.Domingo-Pardo, T.Eronen, W.Gelletly, M.B.Gomez Hornillos, J.Hakala, A.Jokinen, D.Jordan, A.Kankainen, V.Kolkinen, T.Martinez, P.J.Mason, I.Moore, H.Penttila, Zs.Podolyak, M.Reponen, A.Riego, J.Rissanen, B.Rubio, A.Saastamoinen, J.L.Tain, E.Valencia

New Beta-delayed Neutron Measurements in the Light-mass Fission Group

RADIOACTIVITY 91Br, 85,86As, 85Ge(β-), (β-n); measured decay products, Eγ, Iγ, Eβ, Ib, En, In.; deduced β-delayed neutron emission probabilities. Comparison with available data.

doi: 10.1016/j.nds.2014.07.010
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2014AL01      Hyperfine Interactions 223, 245 (2014)

A.Algora, D.Jordan, J.L.Tain, B.Rubio, J.Agramunt, L.Caballero, E.Nacher, A.B.Perez-Cerdan, F.Molina, E.Estevez, E.Valencia, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, T.Eronen, J.Rissanen, A.Saastamoinen, I.D.Moore, H.Penttila, V.S.Kolhinen, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi

Decay heat studies for nuclear energy

doi: 10.1007/s10751-012-0623-6
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2014AL15      Nucl.Data Sheets 120, 12 (2014)

A.Algora, E.Valencia, J.L.Tain, M.D.Jordan, J.Agramunt, B.Rubio, E.Estevez, F.Molina, A.Montaner, V.Guadilla, M.Fallot, A.Porta, A.-A.Zakari-Issoufou, V.M.Bui, S.Rice, Zs.Podolyak, P.H.Regan, W.Gelletly, M.Bowry, P.Mason, G.F.Farrelly, J.Rissanen, T.Eronen, I.Moore, H.Penttila, J.Aysto, V.Eloma, J.Hakala, A.Jokinen, V.Kolkinen, M.Reponen, V.Sonnenschein, D.Cano-Ott, T.Martinez, E.Mendoza, A.R.Garcia, M.B.Gomez Hornillos, V.Gorlychev, R.Caballero-Folch, F.G.Kondev, A.A.Sonzogni

Total Absorption Study of Beta Decays Relevant for Nuclear Applications and Nuclear Structure

RADIOACTIVITY 87,88Br(β-), (β-n); measured decay products, Eγ, Iγ, Eβ, Iβ, β-γ-coin.; deduced β-decay feeding distributions, decay heat impact. Comparison with ENDF/B-VII.1 library.

doi: 10.1016/j.nds.2014.06.129
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2014GO10      Acta Phys.Pol. B45, 211 (2014)

D.Gorelov, J.Hakala, A.Jokinen, V.Kolhinen, J.Koponen, I.Moore, H.Penttila, I.Pohjalainen, M.Reponen, S.Rinta-Antila, V.Sonnenschein, A.Voss, A.Al-Adili, M.Lantz, A.Mattera, S.Pomp, V.Rakopoulos, V.Simutkin, A.Solders, J.Aysto

Isomeric Yield Ratios of Fission Products Measured with the JYFLTRAP

NUCLEAR REACTIONS 238U(p, X)81Ge/81Ga/81As, E=25 MeV; measured reaction products, Eγ, Iγ; deduced isomeric yield ratios of fission products.

doi: 10.5506/APhysPolB.45.211
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2014PE01      Hyperfine Interactions 223, 239 (2014)

K.Perajarvi, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, H.Kettunen, V.Kolhinen, M.Laitinen, I.D.Moore, H.Penttila, J.Rissanen, A.Saastamoinen, H.Toivonen, J.Turunen, J.Aysto

Production of pure 133mXe for CTBTO

doi: 10.1007/s10751-012-0626-3
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2014PE13      Nucl.Data Sheets 119, 334 (2014)

H.PenttilA, D.Gorelov, P.Karvonen, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, J.Parkkonen, S.Rahaman, S.Rinta-Antila, J.Rissanen, V.Rubchenya, T.Sonoda, J.Aysto, M.Lantz, A.Mattera, V.D.Simutkin, S.Pomp, I.Ryzhov

Independent Isotopic Product Yields in 25 MeV and 50 MeV Charged Particle Induced Fission of 238U and 232Th

NUCLEAR REACTIONS 232Th, 238U(p, F), E=25 MeV;238U(p, F), E=50 MeV;238U(d, F), E=25 MeV; measured fission products; deduced isotopic fission yield, position and width of yield distribution of selected isotopes; calculated isotopic yield, position and width of yield distribution using different models.

doi: 10.1016/j.nds.2014.08.092
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2013JO02      Phys.Rev. C 87, 044318 (2013)

D.Jordan, A.Algora, J.L.Tain, B.Rubio, J.Agramunt, A.B.Perez-Cerdan, F.Molina, L.Caballero, E.Nacher, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, I.D.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, U.Hager, S.Rinta-Antila, T.Sonoda, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi, A.Petrovici, K.W.Schmid, A.Faessler

Total absorption study of the β decay of 102, 104, 105Tc

RADIOACTIVITY 102,104,105Tc(β-)[from U(p, F), E=30, 50 MeV followed by mass separation]; measured Eγ, Iγ using the Total Absorption Gamma Spectrometer (TAGS) and JYFLTRAP Penning trap at IGISOL, Jyvaskyla facility; deduced β feedings to levels in 102,104,105Ru, β-strength distributions, Gamow-Teller strengths, average β and γ energies, effects on decay heat calculations. Comparison of deduced β feedings with those from high-resolution γ-ray measurements. Comparison of Gamow-Teller strengths with VAMPIR model calculations. Relevance to decay heat calculations in nuclear reactors.

NUCLEAR REACTIONS U(p, F)102Mo/102Tc/102Ru/104Tc/105Nb/ 105Mo/105Tc/105Ru, E=30, 50 MeV; measured yields using JYFLRTRAP Penning trap at IGISOL, Jyvaskyla facility.

doi: 10.1103/PhysRevC.87.044318
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2013KA08      Phys.Rev. C 87, 024307 (2013)

A.Kankainen, J.Hakala, T.Eronen, D.Gorelov, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, V.Sonnenschein, J.Aysto

Isomeric states close to doubly magic 132Sn studied with the double Penning trap JYFLTRAP

ATOMIC MASSES 121,123,125Cd, 133Te, 129,131In, 130,131Sn, 133Te, 134Sb [from U, 232Th(p, F), E=25 MeV]; measured time-of-flight, cyclotron frequency ratio using the double Penning trap mass spectrometer JYFLTRAP; deduced mass excess, and level energies of ground states and isomers, isomeric to ground-state intensity ratios. Systematics of 11/2- states in odd-N, N=71-81 Cd, Sn, Te, Xe nuclei, and of the lowest 1/2- and 3/2- states in even-N, N=60-84 In isotopes. Comparison with previous studies, and evaluated data. Relevance for the r process.

doi: 10.1103/PhysRevC.87.024307
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2013PE01      Appl.Radiat.Isot. 71, 34 (2013)

K.Perajarvi, T.Eronen, A.Cagniant, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, H.Kettunen, V.S.Kolhinen, M.Laitinen, I.D.Moore, H.Penttila, J.Rissanen, A.Saastamoinen, H.Toivonen, J.Turunen, J.Aysto

Production of pure samples of 131mXe and 135Xe

NUCLEAR REACTIONS Th(P, X)131Xe/135Xe, E=25 MeV; measured reaction products, dipole frequency, E(ce); deduced Xe implantation rates. Penning trap-based production of the Comprehensive Nuclear-Test-Ban Treaty Organization isotopes.

doi: 10.1016/j.apradiso.2012.09.007
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2013PU02      Europhys.Lett. 104, 42001 (2013)

S.Purushothaman, M.P.Reiter, E.Haettner, P.Dendooven, T.Dickel, H.Geissel, J.Ebert, C.Jesch, W.R.Plass, M.Ranjan, H.Weick, F.Amjad, S.Ayet, M.Diwisch, A.Estrade, F.Farinon, F.Greiner, N.Kalantar-Nayestanaki, R.Knobel, J.Kurcewicz, J.Lang, I.D.Moore, I.Mukha, C.Nociforo, M.Petrick, M.Pfutzner, S.Pietri, A.Prochazka, A.-K.Rink, S.Rinta-Antila, C.Scheidenberger, M.Takechi, Y.K.Tanaka, J.S.Winfield, M.I.Yavor

First experimental results of a cryogenic stopping cell with short-lived, heavy uranium fragments produced at 1000 MeV/u

doi: 10.1209/0295-5075/104/42001
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2013WR01      Phys.Rev. C 87, 031303 (2013)

C.Wrede, S.K.L.Sjue, A.Garcia, H.E.Swanson, I.Ahmad, A.Algora, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, M.Reponen, J.Rissanen, A.Saastamoinen, J.Aysto

Electron capture on 116In and implications for nuclear structure related to double-β decay

RADIOACTIVITY 116In(EC)[from 115In(d, p), E=7.6 MeV]; measured γ, β, x-ray spectra, β(x ray)-coin using JYFLTRAP at IGISOL facility in Jyvaskyla; deduced EC decay branch, B(GT). Implications for 2νββ and 0νββ decay modes of 116Cd.

doi: 10.1103/PhysRevC.87.031303
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2012AY01      Eur.Phys.J. A 48, 42 (2012)

J.Aysto, T.Eronen, A.Jokinen, A.Kankainen, I.D.Moore, H.Penttila

An IGISOL portrait - Selected contributions

doi: 10.1140/epja/i2012-12042-5
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2012BA54      Eur.Phys.J. A 48, 155 (2012)

A.Bacquias, T.Kurtukian-Nieto, P.Ascher, L.Audirac, J.Aysto, B.Blank, V.-V.Elomaa, T.Eronen, J.Giovinazzo, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, V.S.Kolhinen, I.D.Moore, S.Rahaman, M.Reponen, J.Rissanen, A.Saastamoinen, J.Souin

Precision half-life determination of a mirror β transition: The decay of 31S

RADIOACTIVITY 31S(β+), (EC)[from 31P(p, n), E=19 MEV]; measured half-life. IGISOL method for source production and JYFLTRAP Penning trap.

doi: 10.1140/epja/i2012-12155-9
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2012CH51      J.Phys.:Conf.Ser. 381, 012071 (2012)

B.Cheal, J.Billowes, M.L.Bissell, K.Blaum, F.C.Charlwood, K.T.Flanagan, D.H.Forest, Ch.Geppert, M.Kowalska, K.Kreim, A.Krieger, J.Kramer, K.M.Lynch, E.Mane, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, T.J.Procter, M.M.Rajabali, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Laser spectroscopy of gallium isotopes beyond N = 50

NUCLEAR MOMENTS 82Ga; measured nuclear moments using laser spectroscopy; deduced hfs, hyperfine coefficients, g-factor, magnetic dipole moment, electric quadrupole from fitting observed hfs of the ground state.

doi: 10.1088/1742-6596/381/1/012071
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012ER05      Eur.Phys.J. A 48, 46 (2012)

T.Eronen, V.S.Kolhinen, V.-V.Elomaa, D.Gorelov, U.Hager, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, S.Kopecky, I.D.Moore, H.Penttila, S.Rahaman, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, J.Szerypo, C.Weber, J.Aysto

JYFLTRAP: a Penning trap for precision mass spectroscopy and isobaric purification

doi: 10.1140/epja/i2012-12046-1
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2012HA25      Phys.Rev.Lett. 109, 032501 (2012)

J.Hakala, J.Dobaczewski, D.Gorelov, T.Eronen, A.Jokinen, A.Kankainen, V.S.Kolhinen, M.Kortelainen, I.D.Moore, H.Penttila, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, V.Sonnenschein, J.Aysto

Precision Mass Measurements beyond 132Sn: Anomalous Behavior of Odd-Even Staggering of Binding Energies

ATOMIC MASSES 121,122,123,124,125,126,127,128Cd, 129,131In, 130,131,132,133,134,135Sn, 131,132,133,134,135,135Sb, 132,133,134,135,136,137,138,139,140Te; measured cyclotron frequency ratios; deduced masses. JYFLTRAP Penning trap, comparison with available data.

doi: 10.1103/PhysRevLett.109.032501
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2012KU28      Phys.Rev. C 86, 044306 (2012)

J.Kurpeta, W.Urban, A.Plochocki, J.Rissanen, J.A.Pinston, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, H.Penttila, A.Saastamoinen, C.Weber, J.Aysto

Low-spin excitations in the 109Tc nucleus

RADIOACTIVITY 109Mo(β-)[from 238U(d, F), E=25 MeV]; measured Eγ, Iγ, βγ-coin, x rays, half-life, K-shell and total conversion coefficients using IGISOL + JYFLTRAP facilities at Jyvaskyla. 109Tc; deduced levels, J, π, Iβ, logft. 109Mo; deduced J, π of ground state. 109Mo, 109Tc(β-); deduced ground state β feedings. decay, and with quasiparticle-rotor model calculations.

doi: 10.1103/PhysRevC.86.044306
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012PE06      Eur.Phys.J. A 48, 43 (2012)

H.Penttila, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, S.Rahaman, S.Rinta-Antila, J.Rissanen, V.Rubchenya, A.Saastamoinen, C.Weber, J.Aysto

Fission yield studies at the IGISOL facility

doi: 10.1140/epja/i2012-12043-4
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1981.


2012PR11      Phys.Rev. C 86, 034329 (2012)

T.J.Procter, J.Billowes, M.L.Bissell, K.Blaum, F.C.Charlwood, B.Cheal, K.T.Flanagan, D.H.Forest, S.Fritzsche, Ch.Geppert, H.Heylen, M.Kowalska, K.Kreim, A.Krieger, J.Kramer, K.M.Lynch, E.Mane, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, M.M.Rajabali, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Nuclear mean-square charge radii of 63, 64, 66, 68-82Ga nuclei: No anomalous behavior at N=32

NUCLEAR REACTIONS Zr(p, X)63Ga/64Ga/66Ga/68Ga/69Ga/70Ga/71Ga/72Ga/73Ga/74Ga/75Ga/76Ga/77Ga/78Ga/79Ga/80Ga/80mGa/81Ga/82Ga, E=1.4 GeV; measured optical spectra, hyperfine coefficients, isotope shifts, mean-square charge radii, J, magnetic dipole and electric quadrupole moments using collinear laser spectroscopy. RILIS source at ISOLDE, CERN facility.

NUCLEAR MOMENTS 63,64,66,68,69,70,71,72,73,74,75,76,77,78,79,80,80m,81,82Ga; measured optical spectra, hyperfine coefficients, isotope shifts, mean-square charge radii, J, magnetic dipole and electric quadrupole moments using collinear laser spectroscopy. RILIS source at ISOLDE, CERN facility. Comparison with shell-model calculations. Z=30, 32, N=30-55; systematics of energies of first 2+ states and E(first 4+)/E(first 2+). Z=28, 30, 31, 36, N=3-0-52; systematics of mean-square charge radii.

doi: 10.1103/PhysRevC.86.034329
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012RE09      Eur.Phys.J. A 48, 45 (2012)

M.Reponen, I.D.Moore, T.Kessler, I.Pohjalainen, S.Rothe, V.Sonnenschein

Laser developments and resonance ionization spectroscopy at IGISOL

doi: 10.1140/epja/i2012-12045-2
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