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NSR database version of May 22, 2024.

Search: Author = A.Koszorus

Found 26 matches.

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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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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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2023LE15      Phys.Lett. B 847, 138278 (2023)

S.Lechner, T.Miyagi, Z.Y.Xu, M.L.Bissell, K.Blaum, B.Cheal, C.S.Devlin, R.F.Garcia Ruiz, J.S.M.Ginges, H.Heylen, J.D.Holt, P.Imgram, A.Kanellakopoulos, A.Koszorus, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, P.Plattner, L.V.Rodriguez, G.Sanamyan, S.R.Stroberg, Y.Utsuno, X.F.Yang, D.T.Yordanov

Electromagnetic moments of the antimony isotopes 112-133Sb

NUCLEAR MOMENTS 113,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133Sb; measured frequencies; deduced hyperfine spectra parameters, hyperfine anomaly, nuclear magnetic dipole and electric quadrupole moments. Comparison with shell model and ab initio calculations. Radioactive antimony (Sb) isotopes were produced at the radioactive ion beam facility ISOLDE-CERN.

doi: 10.1016/j.physletb.2023.138278
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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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2022BA15      Phys.Lett. B 829, 137064 (2022)

S.W.Bai, A.Koszorus, B.S.Hu, X.F.Yang, J.Billowes, C.L.Binnersley, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, T.E.Cocolios, R.P.de Groote, C.S.Devlin, K.T.Flanagan, R.F.Garcia Ruiz, H.Heylen, J.D.Holt, A.Kanellakopoulos, J.Kramer, V.Lagaki, B.Maass, S.Malbrunot-Ettenauer, T.Miyagi, R.Neugart, G.Neyens, W.Nortershauser, L.V.Rodriguez, F.Sommer, A.R.Vernon, S.J.Wang, X.B.Wang, S.G.Wilkins, Z.Y.Xu, C.X.Yuan

Electromagnetic moments of scandium isotopes and N=28 isotones in the distinctive 0f7/2 orbit

NUCLEAR MOMENTS 41,43,45,46,47,49Sc; measured frequencies; deduced hfs constants, electromagnetic dipole and quadrupole moments. Comparison with theoretical calculations. Two collinear laser spectroscopy (CLS) setups, COLLAPS and CRIS at ISOLDE-CERN.

doi: 10.1016/j.physletb.2022.137064
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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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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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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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2021HE04      Phys.Rev. C 103, 014318 (2021)

H.Heylen, C.S.Devlin, W.Gins, M.L.Bissell, K.Blaum, B.Cheal, L.Filippin, R.F.Garcia Ruiz, M.Godefroid, C.Gorges, J.D.Holt, A.Kanellakopoulos, S.Kaufmann, A.Koszorus, K.Konig, S.Malbrunot-Ettenauer, T.Miyagi, R.Neugart, G.Neyens, W.Nortershauser, R.Sanchez, F.Sommer, L.V.RodrIguez, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

High-resolution laser spectroscopy of 27-32Al

NUCLEAR MOMENTS 27,28,29,30,31,32Al; measured hyperfine structure spectra of the 3s23p2P3/20 to 3s24s2S1/2 atomic transition using collinear laser spectroscopy at the COLLAPS-ISOLDE-CERN facility; deduced hyperfine parameters, magnetic dipole moments and spectroscopic quadrupole moments with reference to those for 27Al, isotope shifts and mean-square charge radii relative to 27Al. Comparison with theoretical calculations using ab initio valence space in-medium similarity renormalization group method (VS-IMSRG) with multiple sets of two- and three-nucleon forces from chiral effective field theory, and with previous available experimental results. Neutral atoms of 27,28,29,30,31,32Al produced in U(p, X), E=1.4-GeV, using uranium carbide target, followed by extraction from the target, ionized by a resonance ionization laser ion source (RILIS), accelerated to 30 keV, and finally mass separated.

doi: 10.1103/PhysRevC.103.014318
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2021KO08      Nat.Phys. 17, 439 (2021), Erratum Nat.Phys. 17, 539 (2021)

A.Koszorus, X.F.Yang, W.G.Jiang, S.J.Novario, S.W.Bai, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, B.S.Cooper, R.P.de Groote, A.Ekstrom, K.T.Flanagan, C.Forssen, S.Franchoo, R.F.Garcia Ruiz, F.P.Gustafsson, G.Hagen, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, W.Nazarewicz, G.Neyens, T.Papenbrock, P.-G.Reinhard, C.M.Ricketts, B.K.Sahoo, A.R.Vernon, S.G.Wilkins

Charge radii of exotic potassium isotopes challenge nuclear theory and the magic character of N = 32

NUCLEAR MOMENTS 36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52K; measured frequencies; deduced hyperfine structure spectra, charge radii, new magic numbers. Comparison with NNLO, HFB calculations.

doi: 10.1038/s41567-020-01136-5
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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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2021LE11      Phys.Rev. C 104, 014302 (2021)

S.Lechner, Z.Y.Xu, M.L.Bissell, K.Blaum, B.Cheal, G.De Gregorio, C.S.Devlin, R.F.Garcia Ruiz, A.Gargano, H.Heylen, P.Imgram, A.Kanellakopoulos, A.Koszorus, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, P.Plattner, L.V.Rodriguez, X.F.Yang, D.T.Yordanov

Probing the single-particle behavior above 132Sn via electromagnetic moments of 133, 134Sb and N=82 isotones

NUCLEAR MOMENTS 133,134mSb; measured hyperfine structure spectra of the 7/2+ ground state of 133Sb and the (7-) isomeric state of 134Sb using the collinear laser spectroscopy (COLLAPS) at the radioactive ion-beam facility ISOLDE-CERN; deduced hyperfine structure constants, spins, static magnetic dipole and electric quadrupole moments; discussed single-particle behavior of nuclides above the doubly magic nucleus 132Sn. Comparison with previous experimental results, and with shell-model calculations. 133,134Sb isotopes produced in U(p, X) reaction using UCx target, followed by separation of atomic antimony fragments by selective laser ionization, acceleration of ions to 50 keV, and finally mass separated by a magnetic separator and accumulated in a buffer-gas filled radio-frequency quadrupole cooler and buncher.

doi: 10.1103/PhysRevC.104.014302
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2020DE21      Nat.Phys. 16, 620 (2020)

R.P.de Groote, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, T.Day Goodacre, G.J.Farooq-Smith, D.V.Fedorov, K.T.Flanagan, S.Franchoo, R.F.Garcia Ruiz, W.Gins, J.D.Holt, A.Koszorus, K.M.Lynch, T.Miyagi, W.Nazarewicz, G.Neyens, P.-G.Reinhard, S.Rothe, H.H.Stroke, A.R.Vernon, K.D.A.Wendt, S.G.Wilkins, Z.Y.Xu, X.F.Yang

Measurement and microscopic description of odd-even staggering of charge radii of exotic copper isotopes

NUCLEAR MOMENTS 63,64,65,68,69,70,71,72,73,74,75,76,77,78Cu; measured laser frequencies; deduced isotope shifts, charge radii. Isotope Mass Separator On-Line Device facility (ISOLDE) at CERN.

doi: 10.1038/s41567-020-0868-y
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2020GU24      Phys.Rev. A 102, 052812 (2020)

F.P.Gustafsson, C.M.Ricketts, M.L.Reitsma, R.F.Garcia Ruiz, S.W.Bai, J.C.Berengut, J.Billowes, C.L.Binnersley, A.Borschevsky, T.E.Cocolios, B.S.Cooper, R.P.de Groote, K.T.Flanagan, A.Koszorus, G.Neyens, H.A.Perrett, A.R.Vernon, Q.Wang, S.G.Wilkins, X.F.Yang

Tin resonance-ionization schemes for atomic- and nuclear-structure studies

NUCLEAR MOMENTS 116,117,118,119,120,122,124Sn; measured frequencies; deduced isotope shifts, magnetic dipole hyperfine constants, hyperfine structures. Comparison with state-of-the-art atomic calculations using a relativistic Fock-space coupled-cluster method and the configuration interaction approach combined with many-body perturbation theory.

doi: 10.1103/PhysRevA.102.052812
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2020KA58      Phys.Rev. C 102, 054331 (2020)

A.Kanellakopoulos, X.F.Yang, M.L.Bissell, M.L.Reitsma, S.W.Bai, J.Billowes, K.Blaum, A.Borschevsky, B.Cheal, C.S.Devlin, R.F.Garcia Ruiz, H.Heylen, S.Kaufmann, K.Konig, A.Koszorus, S.Lechner, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, T.Ratajczyk, L.V.Rodriguez, S.Sels, S.J.Wang, L.Xie, Z.Y.Xu, D.T.Yordanov

Nuclear moments of germanium isotopes near N = 40

NUCLEAR MOMENTS 69,71,73Ge; measured hyperfine structure spectra using collinear laser spectroscopy setup COLLAPS at ISOLDE-CERN; deduced magnetic electric hyperfine structure constants, magnetic dipole moment μ, and electric quadrupole moment Q, with the hyperfine fields for the atomic levels calculated using state-of-the-art atomic relativistic Fock-space coupled-cluster method. Comparison with previous experimental results, and with large-scale shell-model calculations using JUN45 interaction, suggesting mixed wave-function configurations. Systematics of low-energy levels, g factors and quadrupole moments of 67,69,71,73Zn, 69,71,73,75Ge, 73Se. 69,71,73Ge isotopes produced in Zr(p, X), E=1.4 GeV reaction, followed by acceleration of germanium ions to 50 keV, and mass separation using the high-resolution isotope separator (HRS), and finally bunched in a gas-filled linear Paul trap (ISCOOL).

doi: 10.1103/PhysRevC.102.054331
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2020SA10      New Journal of Physics 22, 012001 (2020)

B K.Sahoo, A.R.Vernon, R.F.Garcia Ruiz, C.L.Binnersley, J.Billowes, M.L.Bissell, T.E.Cocolios, G.J.Farooq-Smith, K.T.Flanagan, W.Gins, R.P.de Groote, A.Koszorus, G.Neyens, K.M.Lynch, F.Parnefjord-Gustafsson, C.M.Ricketts, K.D.A.Wendt, S.G.Wilkins, X.F.Yang

Analytic response relativistic coupled-cluster theory: the first application to indium isotope shifts

NUCLEAR STRUCTURE 103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127In; calculated charge rms radii, isomer shift values using the relativistic coupled-cluster (CC) theory framework to determine the atomic field shift and mass shift (MS) factors.

doi: 10.1088/1367-2630/ab66dd
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2019KO19      Phys.Rev. C 100, 034304 (2019)

A.Koszorus, X.F.Yang, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, G.J.Farooq-Smith, R.P.de Groote, K.T.Flanagan, S.Franchoo, R.F.Garcia Ruiz, S.Geldhof, W.Gins, A.Kanellakopoulos, K.M.Lynch, G.Neyens, H.H.Stroke, A.R.Vernon, K.D.A.Wendt, S.G.Wilkins

Precision measurements of the charge radii of potassium isotopes

NUCLEAR MOMENTS 38,39,42,44,46,47K; measured hyperfine structures (hfs) for 4s2S1/2 to 4p2P1/2 atomic transition using Collinear Resonance Ionization Spectroscopy (CRIS) at ISOLDE-CERN; deduced isotope shifts, mean-square charge radii, and changes in the mean-square charge radii with reference to 47K. The potassium isotopes were produced at the CERN-ISOLDE facility in U(p, X), E=1.4 GeV reaction using UCx target, high-resolution mass separator (HRS), and gas-filled linear Paul trap (ISCOOL).

doi: 10.1103/PhysRevC.100.034304
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2018GA36      Phys.Rev.X 8, 041005 (2018)

R.F.Garcia Ruiz, A.R.Vernon, C.L.Binnersley, B.K.Sahoo, M.Bissell, J.Billowes, T.E.Cocolios, W.Gins, R.P.de Groote, K.T.Flanagan, A.Koszorus, K.M.Lynch, G.Neyens, C.M.Ricketts, K.D.A.Wendt, S.G.Wilkins, X.F.Yang

High-Precision Multiphoton Ionization of Accelerated Laser-Ablated Species

NUCLEAR MOMENTS 113,115In; measured frequencies; deduced hyperfine structure values, isotope shifts, nuclear magnetic dipole and electric quadrupole moments. Comparison with available data.

doi: 10.1103/PhysRevX.8.041005
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2018LY01      Phys.Rev. C 97, 024309 (2018)

K.M.Lynch, S.G.Wilkins, J.Billowes, C.L.Binnersley, M.L.Bissell, K.Chrysalidis, T.E.Cocolios, T.Day Goodacre, R.P.de Groote, G.J.Farooq-Smith, D.V.Fedorov, V.N.Fedosseev, K.T.Flanagan, S.Franchoo, R.F.Garcia Ruiz, W.Gins, R.Heinke, A.Koszorus, B.A.Marsh, P.L.Molkanov, P.Naubereit, G.Neyens, C.M.Ricketts, S.Rothe, C.Seiffert, M.D.Seliverstov, H.H.Stroke, D.Studer, A.R.Vernon, K.D.A.Wendt, X.F.Yang

Laser-spectroscopy studies of the nuclear structure of neutron-rich radium

NUCLEAR MOMENTS 222,223,224,225,226,227,228,229,230,231,232,233Ra; measured high-resolution hyperfine-structure spectra, isotope shifts, changes in mean-square charge; deduced King-plot for the extraction of the F and M atomic factors, odd-even staggering. 223,225,227,229,231Ra; deduced hyperfine factors A and B, static magnetic dipole and electric quadrupole moments. Collinear Resonance Ionization Spectroscopy (CRIS) at ISOLDE, CERN facility. Radium isotopes produced by impinging 1.4-GeV protons on a thick uranium-carbide target followed by surface and multistep laser resonance ionization using RILIS ion source, and mass separation with the high resolution separator, then cooled and bunched using the ISOLDE linear Paul trap, ISCOOL. Comparison with previous experimental values. Systematics of intrinsic quadrupole moments for N=130-146 U, Th, Ra and Rn isotopes, and those of odd-even staggering for N=132-144 Fr and Ra isotopes.

doi: 10.1103/PhysRevC.97.024309
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2018XU05      Phys.Lett. B 782, 619 (2018)

Z.Y.Xu, H.Heylen, K.Asahi, F.Boulay, J.M.Daugas, R.P.de Groote, W.Gins, O.Kamalou, A.Koszorus, M.Lykiardopoulou, T.J.Mertzimekis, G.Neyens, H.Nishibata, T.Otsuka, R.Orset, A.Poves, T.Sato, C.Stodel, J.C.Thomas, N.Tsunoda, Y.Utsuno, M.Vandebrouck, X.F.Yang

Nuclear moments of the low-lying isomeric 1+ state of 34Al: Investigation on the neutron 1p1h excitation across N=20 in the island of inversion

NUCLEAR MOMENTS 32,34Al; measured transition frequencies using β-NMR/NQR techniques; deduced nuclear g factor and quadrupole moments. Comparison with large-scale shell-model calculations using several effective interactions.

doi: 10.1016/j.physletb.2018.06.009
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2017DE30      Phys.Rev. C 96, 041302 (2017)

R.P.de Groote, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, T.Day Goodacre, G.J.Farooq-Smith, D.V.Fedorov, K.T.Flanagan, S.Franchoo, R.F.Garcia Ruiz, A.Koszorus, K.M.Lynch, G.Neyens, F.Nowacki, T.Otsuka, S.Rothe, H.H.Stroke, Y.Tsunoda, A.R.Vernon, K.D.A.Wendt, S.G.Wilkins, Z.Y.Xu, X.F.Yang

Dipole and quadrupole moments of 73-78Cu as a test of the robustness of the Z = 28 shell closure near 78Ni

NUCLEAR MOMENTS 73,74,75,76,77,78Cu; measured hyperfine spectra using Collinear Resonance Ionization Spectroscopy (CRIS) at CERN-ISOLDE facility; deduced hyperfine A and B parameters, magnetic dipole moments, electric quadrupole moments for the ground states, spins of 76,77Cu ground states. Comparison with large-scale shell-model calculations using A3DA-m and PFSDG-U interactions. The Cu isotopes produced in U(p, F), E=1.4 GeV reaction followed by laser ionization using the resonant ionization laser ion source (RILIS), and mass separation using the high-resolution separator.

doi: 10.1103/PhysRevC.96.041302
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2017WI11      Phys.Rev. C 96, 034317 (2017)

S.G.Wilkins, K.M.Lynch, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, T.Day Goodacre, R.P.de Groote, G.J.Farooq-Smith, K.T.Flanagan, S.Franchoo, R.F.Garcia Ruiz, W.Gins, H.Heylen, A.Koszorus, G.Neyens, H.H.Stroke, A.R.Vernon, K.D.A.Wendt, X.F.Yang

Quadrupole moment of 203Fr

NUCLEAR MOMENTS 203,207Fr; measured hyperfine spectra, ground-state spins, isotope shifts, magnetic dipole moments, spectroscopic quadrupole, and mean-square charge radii using high-resolution collinear resonance ionization spectroscopy (CRIS) at ISOLDE-CERN facility. 203,207Fr produced in U(p, X), E=1.4 GeV, using uranium carbide target, followed by mass separation using high-resolution separator (HRS) at ISOLDE. Comparison with literature values. 203Fr; deduced intrinsic quadrupole moment and calculated static and total deformation parameters β2. Systematics of quadrupole moments for N=110-126 Bi, Po and Fr isotopes.

doi: 10.1103/PhysRevC.96.034317
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