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NSR database version of April 11, 2024.

Search: Author = J.Kurpeta

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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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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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2020UR02      Phys.Rev. C 102, 024318 (2020)

W.Urban, T.Rzaca-Urban, J.Wisniewski, J.Kurpeta, A.Plochocki, J.P.Greene, A.G.Smith, G.S.Simpson

New, low-energy excitations in 107Mo and 109Mo

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, half-lives of the isomer in 107Mo by γγ(t) using the Eurogam2 array for 248Cm(SF) experiment and Gammasphere array for 252Cf(SF). 107,109Mo; deduced levels, isomers, J, π, Jπ for ground states and isomers, total conversion coefficients for an isomeric transition in 107Mo, configurations. Systematics of low-energy excitations and γ deformation parameters in Mo isotopes.

doi: 10.1103/PhysRevC.102.024318
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Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the XUNDL database. For more information, click here.


2014KU01      Hyperfine Interactions 223, 175 (2014)

J.Kurpeta, A.Jokinen, H.Penttila, A.Plochocki, J.Rissanen, W.Urban, J.Aysto

Trap-assisted studies of odd, neutron-rich isotopes from Tc to Pd

doi: 10.1007/s10751-012-0616-5
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2014KU28      Phys.Rev. C 90, 064315 (2014)

J.Kurpeta, W.Urban, A.Plochocki, T.Rzaca-Urban, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene, A.Jokinen, H.Penttila

Neutron configurations in 113Pd

RADIOACTIVITY 248Cm, 252Cf(SF); measured prompt Eγ, Iγ, γγ-coin using EOROGAM-II array at Jyvaskyla and Gammasphere array at ANL. 113Pd; deduced levels, J, π, bands configuration, staggering, alignments Comparison with band structures of 109Mo, 109,112,113Pd, 110,111Ru. Discussed possible oblate-shape of low-energy bandheads. 113Rh(β-)[from 238U(p, X), E=25 MeV using IGISOL at Jyvaskyla, followed by mass separation]; measured Eγ, Iγ, Eβ, βγ-, γγ-coin. 113Pd; deduced levels, J, π, logft, configurations, B(GT) strengths and comparison with those from 113Ru to 113Rh decay.

doi: 10.1103/PhysRevC.90.064315
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Data from this article have been entered in the XUNDL database. For more information, click here.


2013DE20      Phys.Rev. C 87, 067303 (2013)

H.De Witte, S.Eeckhaudt, A.N.Andreyev, I.N.Borzov, J.Cederkall, A.De Smet, D.V.Fedorov, V.N.Fedoseyev, S.Franchoo, M.Gorska, H.Grawe, G.Huber, M.Huyse, Z.Janas, U.Koester, W.Kurcewicz, J.Kurpeta, A.Plochocki, K.Van de Vel, P.Van Duppen, L.Weissman

β- decay of the neutron-rich isotope 215Pb

RADIOACTIVITY 215Pb(β-)[from 238U(p, X), E=1.4 GeV]; measured Eβ, Eγ, Iγ, βγ-, γγ-coin, half-life of 215Pb g.s., conversion coefficient. 215Bi; deduced levels, J, π, β feedings, logft, multipolarity. 215Pb beam produced using resonant laser ionization (RILIS) and mass separator at ISOLDE-CERN facility. Systematics of lowest 7/2- level energies in odd-A Bi nuclei.

doi: 10.1103/PhysRevC.87.067303
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012KU06      Phys.Rev. C 85, 027302 (2012)

J.Kurpeta, W.Urban, T.Materna, H.Faust, U.Koster, J.Rissanen, T.Rzaca-Urban, C.Mazzocchi, A.G.Smith, J.F.Smith, J.P.Greene, I.Ahmad

Low-spin structure of 85Se and the βn branching of 85As

RADIOACTIVITY 85As(β-)[from 235U(n, F)]; measured Eγ, Iγ, βγ-, γγ-coin. 85Se; deduced levels, J, π, configuration. 85As(β-n); discussed delayed neutron decay branch.

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin for prompt γ rays. 85Se; deduced levels, J, π. Eurogam2 and Gammasphere arrays.

doi: 10.1103/PhysRevC.85.027302
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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.


2012RI05      Phys.Rev. C 86, 034337 (2012)

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

Structure of 115Ag studied by β- decays of 115Pd and 115Pdm

RADIOACTIVITY 115Pd, 115mPd(β-)[from 115Ru-115Rh-115Pd decay chain, 115Ru formed in U(p, X), E=25 MeV]; measured Eγ, Iγ, Eβ, βγ-, βγγ-coin using IGISOL and JYFLTRAP facilities in Jyvaskyla. 115Ag; deduced levels, J, π, multipolarity, Iβ, logft, Nilsson configuration, β strength distribution. Systematics of negative and positive parity Nilsson states in 109,111,113,115,117Ag. 115Pd; discussed spin and parity of ground state and isomer. Comparison with level scheme of 111Ag.

doi: 10.1103/PhysRevC.86.034337
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012RO01      J.Phys.(London) G39, 015101 (2012)

C.Rodriguez Triguero, A.M.Bruce, T.Eronen, I.D.Moore, M.Bowry, A.M.D.Bacelar, A.Y.Deo, V.-V.Elomaa, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, V.S.Kolhinen, J.Kurpeta, T.Malkiewicz, P.J.R.Mason, H.Penttila, M.Reponen, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, G.S.Simpson, J.Aysto

Trap-assisted separation of nuclear states for gamma-ray spectroscopy: the example of 100Nb

RADIOACTIVITY 100Nb(β-); measured Eγ, Iγ, β-γ-coin.; deduced energy levels, J, π for ground and isomeric state transitions. JYFLTRAP installation.

doi: 10.1088/0954-3899/39/1/015101
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2011KU16      Phys.Rev. C 84, 044304 (2011)

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

Signatures of oblate deformation in the 111Tc nucleus

RADIOACTIVITY 111Mo(β-)[from 238U(d, F), E=25 MeV]; measured Eγ, Iγ, γγ-, βγ-coin, half-life. 111Tc; deduced levels, J, π, conversion coefficients, multipolarities, Iβ, logft, Q value. 111Tc(β-) [from 111Tc decay]; measured Eγ, βγ-coin. IGISOL3 mass separator coupled to JYFLTRAP Penning trap. Comparison with particle-plus-rotor model calculations.

doi: 10.1103/PhysRevC.84.044304
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2011RI01      Phys.Rev. C 83, 011301 (2011); Erratum Phys.Rev. C 83, 029901 (2011)

J.Rissanen, J.Kurpeta, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, I.D.Moore, P.Karvonen, A.Plochocki, L.Prochniak, H.Penttila, S.Rahaman, M.Reponen, A.Saastamoinen, J.Szerypo, W.Urban, C.Weber, J.Aysto

Decay study of 114Tc with a Penning trap

RADIOACTIVITY 114Tc(β-)[from U(d, X), E=25 MeV]; measured Eγ, Iγ, γγ-coin, half-lives, mass difference by Penning-Trap (JYFLTRAP) assisted spectroscopy. IGISOL facility. 114Ru; deduced levels, isomers, J, π, configurations, Q value for β decay, logft. Comparison with microscopic Bohr-Hamiltonian calculations using Sly4 Skyrme interaction.

doi: 10.1103/PhysRevC.83.011301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011RI07      Eur.Phys.J. A 47, 97 (2011); Erratum Eur.Phys.J. A 47, 116 (2011)

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

Penning-trap-assisted study of 115Ru beta decay

RADIOACTIVITY 115Ru(β-)[from U(p, f), E=25 MeV, selected by JYFLTRAP]; measured Eγ, Iγ, Eβ, Iβ, X-rays, βγ-coin. 115Rh deduced levels, J, π, level log ft, level β-feeding, ICC(K) for 80.1 keV transition, rotational constants for the K=1/2 intruder band. 115Ru deduced ground state J, π, β-strength distribution. Penning-trap-assisted β and γ spectroscopy, IGISOL facility. Comparison with near-by isotopes of Ru and Rh.

doi: 10.1140/epja/i2011-11097-0
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Data from this article have been entered in the XUNDL database. For more information, click here.


2010KU01      Acta Phys.Pol. B41, 469 (2010)

J.Kurpeta, J.Rissanen, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, P.Karvonen, I.D.Moore, H.Penttila, A.Plochocki, S.Rahaman, S.Rinta-Antila, J.Ronkainen, A.Saastamoinen, T.Sonoda, J.Szerypo, W.Urban, Ch.Weber, J.Aysto

Progress in Trap Assisted β Decay Spectroscopy of 115Ru

RADIOACTIVITY 115Ru(β-) [from 238U(p, F)115Ru, E=25 MeV]; measured Eγ, Iγ, γγ-coin.; deduced energy levels, gamma transitions, T1/2. JYFLTRAP Penning trap system.

Data from this article have been entered in the XUNDL database. For more information, click here.


2010KU19      Phys.Rev. C 82, 027306 (2010)

J.Kurpeta, W.Urban, A.Plochocki, J.Rissanen, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, I.D.Moore, H.Penttila, S.Rahaman, A.Saastamoinen, T.Sonoda, J.Szerypo, C.Weber, J.Aysto

Excited states in 115Pd populated in the β- decay of 115Rh

RADIOACTIVITY 115Rh(β-); measured Eγ, Iγ, γγ-coin. 115Pd; deduced levels, J, π. Systematics of low-lying states in odd-A Mo, Ru and Pd nuclei from N=61-71.

doi: 10.1103/PhysRevC.82.027306
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2010KU25      Phys.Rev. C 82, 064318 (2010)

J.Kurpeta, J.Rissanen, A.Plochocki, W.Urban, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, T.Malkiewicz, I.D.Moore, H.Penttila, A.Saastamoinen, G.S.Simpson, C.Weber, J.Aysto

New isomer and decay half-life of 115Ru

RADIOACTIVITY 115Ru(IT), (β-)[From 238U(p, X), E=25 MeV]; measured Eγ, Iγ, βγ-, γγ-coin, isomer and ground state half-lives, JYFLTRAP assisted β-γ spectroscopy. 115Ru, 115Rh; deduced levels, J, π, conversion coefficients, multipolarity. systematics of low-lying levels and isomers in 113,115,117Pd, 113,115Ru.

doi: 10.1103/PhysRevC.82.064318
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Data from this article have been entered in the XUNDL database. For more information, click here.


2010UR03      Phys.Rev. C 82, 064308 (2010)

W.Urban, J.A.Pinston, T.Rzaca-Urban, J.Kurpeta, A.G.Smith, I.Ahmad

Near-yrast, medium-spin structure of the 109Tc nucleus

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 array. 109Tc; deduced levels, J, π, conversion coefficients, multipolarities, rotational bands. 110Tc, 135,136,137I; measured Eγ. Comparison with level systematics of 103,105,107,109,111Tc. Comparison with quasiparticle-rotor model (QPRM) calculations. Evidence for triaxial nature of 109Tc.

NUCLEAR STRUCTURE 107,109Tc; calculated levels, J, π, rotational bands, and γ-ray branching ratios using quasiparticle-rotor model (QPRM).

doi: 10.1103/PhysRevC.82.064308
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2008SA05      Eur.Phys.J. A 35, 159 (2008)

M.Sanchez-Vega, H.Mach, R.B.E.Taylor, B.Fogelberg, A.Lindroth, A.J.Aas, P.Dendooven, A.Honkanen, M.Huhta, G.Lhersonneau, M.Oinonen, J.M.Parmonen, H.Penttila, J.Aysto, J.R.Persson, J.Kurpeta

Studies of quadrupole collectivity in the γ-soft 106Ru

RADIOACTIVITY 106Tc(β+) [from 238U(p, F), E=25 MeV]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2, B(E2) using advanced time-delayed method. 106Ru deduced levels, J, π, T1/2. Comparison with various models.

doi: 10.1140/epja/i2007-10530-3
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2007KU06      Eur.Phys.J. A 31, 263 (2007)

J.Kurpeta, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, P.Karvonen, I.Moore, H.Penttila, A.Plochocki, S.Rahaman, S.Rinta-Antila, J.Rissanen, J.Ronkainen, A.Saastamoinen, T.Sonoda, W.Urban, Ch.Weber, J.Aysto

Penning trap assisted decay spectroscopy of neutron-rich 115Ru

RADIOACTIVITY 115Ru(β-) [from 238U(p, F)]; measured Eγ, Iγ, γγ-coin. 115Rh deduced levels, J, π. Level systematics in neighboring nuclides discussed.

NUCLEAR REACTIONS 238U(p, F), E=25 MeV; measured fission fragment yields. Mass separator, Penning trap.

doi: 10.1140/epja/i2007-10009-3
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2007KU23      Eur.Phys.J. A 33, 307 (2007)

J.Kurpeta, W.Urban, Ch.Droste, A.Plochocki, S.G.Rohozinski, T.Rzaca-Urban, T.Morek, L.Prochniak, K.Starosta, J.Aysto, H.Penttila, J.L.Durell, A.G.Smith, G.Lhersonneau, I.Ahmad

Low-spin structure of 113Ru and 113Rh

RADIOACTIVITY 113Ru, 113Rh(β-) [from 248cm(SF)]; measured Eγ, Iγ, βγ, γγ-coinc. 113Ru, Rh deduced levels, J, π, logft.Compared results to model calculations.

doi: 10.1140/epja/i2006-10464-2
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2007KU30      Phys.Rev. C 76, 054320 (2007)

J.Kurcewicz, W.Czarnacki, M.Karny, M.Kasztelan, M.Kisielinski, A.Korgul, W.Kurcewicz, J.Kurpeta, S.Lewandowski, P.Majorkiewicz, H.Penttila, A.Plochocki, B.Roussiere, O.Steczkiewicz, A.Wojtasiewicz

Identification of an α-decaying (9-) isomer in 216Fr

RADIOACTIVITY 220Ac, 216Fr, 212At (α) [from 209Bi(14N, F), E=5.6 MeV/nucleon]; measured α-spectra. 212At, 216Fr; deduced levels, J, π, half-lives. 216Fr; deduced Eα, Qα, excitation energies, mass excess.

doi: 10.1103/PhysRevC.76.054320
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2005DE01      Eur.Phys.J. A 23, 243 (2005)

H.De Witte, A.N.Andreyev, S.Dean, S.Franchoo, M.Huyse, O.Ivanov, U.Koster, W.Kurcewicz, J.Kurpeta, A.Plochocki, K.Van de Vel, J.Van de Walle, P.Van Duppen

Alpha-decay of neutron-deficient 200Fr and heavier neighbours

RADIOACTIVITY 200,201,203,205Fr, 196,197,199,201At, 193Bi(α) [from Th(p, X) and subsequent decay]; measured Eα, T1/2. 201Fr, 197At, 193Bi, 189Tl deduced levels, J, π.

doi: 10.1140/epja/i2004-10077-9
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2005PE12      Nucl.Instrum.Methods Phys.Res. A546, 418 (2005)

K.Perajarvi, J.Cerny, J.Hakala, J.Huikari, A.Jokinen, P.Karvonen, J.Kurpeta, D.Lee, I.Moore, H.Penttila, A.Popov, J.Aysto

New ion-guide for the production of beams of neutron-rich nuclei between Z = 20 - 28

NUCLEAR REACTIONS 197Au(65Cu, X)62Co/63Co, E ≈ 400-460 MeV; measured yields. Ion-guide isotope separator.

RADIOACTIVITY 63Co(β-) [from 197Au(65Cu, X)]; measured β-delayed Eγ, Iγ. Ion-guide isotope separator.

doi: 10.1016/j.nima.2005.03.124
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2005PE23      Eur.Phys.J. A 25, Supplement 1, 749 (2005)

K.Perajarvi, J.Cerny, U.Hager, J.Hakala, J.Huikari, A.Jokinen, P.Karvonen, J.Kurpeta, D.Lee, I.Moore, H.Penttila, A.Popov, J.Aysto

Production of beams of neutron-rich nuclei between Ca and Ni using the ion-guide technique

RADIOACTIVITY 63Cu(EC) [from 197Au(65Cu, X)]; measured β-delayed Eγ, Iγ.

NUCLEAR REACTIONS 197Au(65Cu, X)62Cu/63Cu, E=443 MeV; measured yields.

doi: 10.1140/epjad/i2005-06-060-x
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2004DE16      Phys.Rev. C 69, 044305 (2004)

H.De Witte, A.N.Andreyev, I.N.Borzov, E.Caurier, J.Cederkall, A.De Smet, S.Eeckhaudt, D.V.Fedorov, V.N.Fedosseev, S.Franchoo, M.Gorska, H.Grawe, G.Huber, M.Huyse, Z.Janas, U.Koster, W.Kurcewicz, J.Kurpeta, A.Plochocki, K.Van de Vel, P.Van Duppen, L.Weissman

First observation of the β decay of neutron-rich 218Bi by the pulsed-release technique and resonant laser ionization

RADIOACTIVITY 218Bi(β-) [from U(p, X)]; measured Eγ, Iγ, βγ-coin, T1/2. 218Po deduced levels, J, π. Comparison with model predictions. Pulsed-release technique, resonant laser ionization.

doi: 10.1103/PhysRevC.69.044305
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2004FR14      Nucl.Phys. A734, 449 (2004)

S.Franchoo, H.De Witte, A.N.Andreyev, J.Cederkall, S.Dean, A.De Smet, S.Eeckhaudt, D.V.Fedorov, V.N.Fedosseev, M.Gorska, G.Huber, M.Huyse, Z.Janas, U.Koster, W.Kurcewicz, J.Kurpeta, P.Mayet, A.Plochocki, K.Van de Vel, P.Van Duppen, L.Weissman, and the ISOLDE Collaboration

Beta-decay measurements of neutron-rich thallium, lead, and bismuth by means of resonant laser ionisation

RADIOACTIVITY 218Bi(β-); measured Eγ, Iγ, βγ-coin. Resonant laser ionization.

doi: 10.1016/j.nuclphysa.2004.01.083
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2004UR04      Eur.Phys.J. A 22, 157 (2004)

W.Urban, A.Zlomaniec, G.Simpson, J.A.Pinston, J.Kurpeta, T.Rzaca-Urban, J.L.Durell, A.G.Smith, B.J.Varley, N.Schulz, I.Ahmad

New spins for ground states and isomers in 115Pd and 117Pd

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin. 115,117Pd deduced levels, J, π, isomeric states. Eurogam2 array.

doi: 10.1140/epja/i2004-10090-0
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2004WO17      Nucl.Phys. A746, 663c (2004)

A.Wojtasiewicz, G.Canchel, A.Emsallem, M.Gierlik, Z.Janas, M.Kisielinski, W.Kurcewicz, J.Kurpeta, H.Lefort, S.Lewandowski, H.Penttila, A.Plochocki, E.Roeckl, B.Roussiere, S.Sidor, A.Syntfeld

Investigation of a gas catcher/ion guide system at the Warsaw cyclotron

doi: 10.1016/j.nuclphysa.2004.09.047
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2003KU25      Eur.Phys.J. A 18, 5 (2003)

J.Kurpeta, A.Plochocki, A.N.Andreyev, J.Aysto, A.De Smet, H.De Witte, A.-H.Evensen, V.Fedoseyev, S.Franchoo, M.Gorska, M.Huhta, M.Huyse, Z.Janas, A.Jokinen, M.Karny, E.Kugler, W.Kurcewicz, U.Koster, J.Lettry, A.Nieminen, K.Partes, M.Ramdhane, H.L.Ravn, K.Rykaczewski, J.Szerypo, K.Van de Vel, P.Van Duppen, L.Weissman, G.Walter, A.Wohr, and the IS387 and ISOLDE Collaborations

The decay of the new neutron-rich isotope 217Bi

RADIOACTIVITY 217Bi(β-) [from 232Th, 238U(p, X)]; measured Eγ, Iγ, βγ-coin, T1/2, Qβ; deduced log ft. 217Po deduced levels. 217Po(α) [from 217Bi decay]; measured Eα, T1/2. Mass separator.

doi: 10.1140/epja/i2003-10065-7
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2003KU26      Eur.Phys.J. A 18, 31 (2003)

J.Kurpeta, A.Plochocki, A.N.Andreyev, J.Aysto, A.De Smet, H.De Witte, A.-H.Evensen, V.Fedoseyev, S.Franchoo, M.Gorska, H.Grawe, M.Huhta, M.Huyse, Z.Janas, A.Jokinen, M.Karny, E.Kugler, W.Kurcewicz, U.Koster, J.Lettry, A.Nieminen, K.Partes, M.Ramdhane, H.L.Ravn, K.Rykaczewski, J.Szerypo, K.Van de Vel, P.Van Duppen, L.Weissman, G.Walter, A.Wohr, and the IS387 and ISOLDE Collaborations

Isomeric and ground-state decay of 215Bi

RADIOACTIVITY 215mBi(IT), (β-); 215Bi(β-) [from 232Th, 238U(p, X)]; measured Eγ, Iγ, X-ray spectra, γγ-, βγ-, (X-ray)γ-coin; deduced log ft. 215Bi deduced levels, J, π, configurations, ICC, high-spin isomer T1/2. 215Po deduced levels, J, π, configurations. Mass separator.

doi: 10.1140/epja/i2003-10066-6
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2002AN15      Eur.Phys.J. A 14, 63 (2002)

A.N.Andreyev, K.Van de Vel, A.Barzakh, A.De Smet, H.De Witte, D.V.Fedorov, V.N.Fedoseyev, S.Franchoo, M.Gorska, M.Huyse, Z.Janas, U.Koster, W.Kurcewicz, J.Kurpeta, V.I.Mishin, K.Partes, A.Plochocki, P.Van Duppen, L.Weissman

Nuclear Spins, Magnetic Moments and α-Decay Spectroscopy of Long-Lived Isomeric States in 185Pb

RADIOACTIVITY 185mPb(α) [from U(p, X)]; measured Eα, Eγ, αγ-coin, T1/2. 181Hg deduced levels, possible J, π. On-line mass separator.

NUCLEAR MOMENTS 185mPb; measured hfs; deduced isomeric states J, π. Resonance ionization laser ion source.

doi: 10.1007/s10050-002-8790-5
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2002KU18      Eur.Phys.J. A 13, 449 (2002)

J.Kurpeta, G.Lhersonneau, A.Plochocki, J.C.Wang, P.Dendooven, A.Honkanen, M.Huhta, M.Oinonen, H.Penttila, K.Perajarvi, J.R.Persson, J.Aysto

Decay of the Neutron-Rich Isotope 113Ru to 113Rh

RADIOACTIVITY 113,113mRu(β-) [from 238U(p, X)]; measured Eγ, Iγ, γγ-, (X-ray)γ-coin; deduced Gamow-Teller strength distributions. 113Rh deduced levels, possible J, π, shape coexistence features. Mass-separated source.

doi: 10.1007/s10050-002-8775-4
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2000KU06      Eur.Phys.J. A 7, 49 (2000)

J.Kurpeta, A.Andreyev, J.Aysto, A.-H.Evensen, M.Huhta, M.Huyse, A.Jokinen, M.Karny, E.Kugler, J.Lettry, A.Nieminen, A.Plochocki, M.Ramdhane, H.L.Ravn, K.Rykaczewski, J.Szerypo, P.Van Duppen, G.Walter, A.Wohr, and the ISOLDE Collaboration

The Decay of the Neutron-Rich Nucleus 216Bi

RADIOACTIVITY 216Bi(β-) [from 232Th(p, X), E=1 GeV]; measured Eγ, Iγ(t), γγ-, βγ-coin. 216Po deduced levels, possible J, π. Mass separator, tape transport.

doi: 10.1007/s100500050010
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2000MU10      Phys.Rev. C61, 054308 (2000)

W.F.Mueller, B.Bruyneel, S.Franchoo, M.Huyse, J.Kurpeta, K.Kruglov, Y.Kudryavtsev, N.V.S.V.Prasad, R.Raabe, I.Reusen, P.Van Duppen, J.Van Roosbroeck, L.Vermeeren, L.Weissman, Z.Janas, M.Karny, T.Kszczot, A.Plochocki, K.-L.Kratz, B.Pfeiffer, H.Grawe, U.Koster, P.Thirolf, W.B.Walters

β Decay of 66Co, 68Co, and 70Co

RADIOACTIVITY 66,68,70Co(β-) [from 238U(p, F)]; measured β-delayed Eγ, Iγ, γγ-, βγ-coin, T1/2. 66,68,70Ni deduced levels, J, π, β-branching. Laser-ionization isotope separation on-line. Comparison with shell model results.

NUCLEAR REACTIONS 238U(p, F)68Ni/69Ni/70Ni/71Ni/72Ni/73Ni/74Ni/66Co/67Co/68Co/69Co/70Co, E=30 MeV; measured isotope yields. Laser-ionization isotope separation on-line.

doi: 10.1103/PhysRevC.61.054308
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1998KU17      Eur.Phys.J. A 2, 241 (1998)

J.Kurpeta, G.Lhersonneau, J.C.Wang, P.Dendooven, A.Honkanen, M.Huhta, M.Oinonen, H.Penttila, K.Perajarvi, J.R.Persson, A.Plochocki, J.Aysto

First Decay Scheme of 113Tc and Identification of 113mRu

RADIOACTIVITY 113Tc(β-) [from 238U(p, F), E=25 MeV]; measured Eγ, Iγ, γγ-coin, βγ(t). 113Ru deduced levels, isomer T1/2, possible J, π, configuration, ground state and isomer decay feeding patterns.

doi: 10.1007/s100500050114
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1996LH04      Phys.Rev. C54, 1592 (1996)

G.Lhersonneau, P.Dendooven, A.Honkanen, M.Huhta, M.Oinonen, H.Penttila, J.Aysto, J.Kurpeta, J.R.Persson, A.Popov

First Observation of Nonyrast Levels in 103Zr and Level Systematics of N = 63 Sr, Zr, and Mo Isotones

RADIOACTIVITY 103Y(β-) [from U(p, X), E=25 MeV]; measured Eγ, Iγ, γγ-coin, βγ(t), T1/2. 103Zr deduced levels J, π, single particle Nilsson orbitals, band structure. On-line mass separation.

NUCLEAR STRUCTURE 101Sr, 103Zr, 105Mo; analyzed level data; deduced systematics.

doi: 10.1103/PhysRevC.54.1592
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1996PE25      Phys.Rev. C54, 2760 (1996)

H.Penttila, P.Dendooven, A.Honkanen, M.Huhta, G.Lhersonneau, M.Oinonen, J.-M.Parmonen, K.Perajarvi, J.Aysto, J.Kurpeta, J.R.Persson

First Observation of β Decay of 108Nb to 108Mo

RADIOACTIVITY 108Nb(β-n) [from 238U(p, F), E=25, 30 MeV]; measured γ spectra, βγ-coin, decay curve; deduced levels J, π, T1/2, log ft. 108Mo deduced level T1/2, deformation.

NUCLEAR REACTIONS, ICPND 238U(p, F)108Nb/108Mo/108Tc/108Ru, E=25 MeV; measured residuals yields following fission production.

doi: 10.1103/PhysRevC.54.2760
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1996PF04      Nucl.Phys. A611, 270 (1996)

M.Pfutzner, P.Hornshoj, H.L.Nielsen, J.Kurpeta, A.Plochocki

Radiative Electron Capture in the Second Forbidden Decay of 137La

RADIOACTIVITY 137La(EC); measured internal bremsstrahlung, Iγ, γ(K X-ray)-coin; deduced shape factors, internal bremsstrahlung branching, log ft. Forbidden decays. Detour transitions model.

doi: 10.1016/S0375-9474(96)00392-2
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