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NSR database version of April 11, 2024.

Search: Author = B.Cheal

Found 61 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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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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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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2022MA04      Phys.Rev.Lett. 128, 022502 (2022)

S.Malbrunot-Ettenauer, S.Kaufmann, S.Bacca, C.Barbieri, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, T.Duguet, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, J.D.Holt, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, T.Miyagi, P.Navratil, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, S.J.Novario, T.Papenbrock, T.Ratajczyk, P.-G.Reinhard, L.V.Rodriguez, R.Sanchez, S.Sailer, A.Schwenk, J.Simonis, V.Soma, S.R.Stroberg, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Nuclear Charge Radii of the Nickel Isotopes 58-68, 70Ni

NUCLEAR MOMENTS 58,59,60,61,62,63,64,65,66,67,68Ni, 70Ni; measured frequency-time spectrum; deduced isotope shifts, mean-square charge radii. Comparison with ab initio approaches. Collinear laser spectroscopy beam line COLLAPS, ISOLDE/CERN.

doi: 10.1103/PhysRevLett.128.022502
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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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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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2020KA22      Phys.Rev.Lett. 124, 132502 (2020)

S.Kaufmann, J.Simonis, S.Bacca, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, A.Kanellakopoulos, S.Malbrunot-Ettenauer, M.Miorelli, R.Neugart, G.Neyens, W.Nortershauser, R.Sanchez, S.Sailer, A.Schwenk, T.Ratajczyk, L.V.Rodriguez, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Charge Radius of the Short-Lived 68Ni and Correlation with the Dipole Polarizability

NUCLEAR MOMENTS 58,60,61,62,64,68Ni; measured frequencies; deduced resonance spectra, isotope shifts, nuclear charge radii. Comparison with novel coupled-cluster calculations.

doi: 10.1103/PhysRevLett.124.132502
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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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2020RO19      Phys.Rev. C 102, 051301(R) (2020)

L.V.Rodriguez, D.L.Balabanski, M.L.Bissell, K.Blaum, B.Cheal, G.De Gregorio, J.Ekman, R.F.Garcia Ruiz, A.Gargano, G.Georgiev, W.Gins, C.Gorges, H.Heylen, A.Kanellakopoulos, S.Kaufmann, V.Lagaki, S.Lechner, B.Maass, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, S.Sailer, R.Sanchez, S.Schmidt, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Doubly-magic character of 132Sn studied via electromagnetic moments of 133Sn

NUCLEAR MOMENTS 133Sn; measured hyperfine structure spectra, magnetic dipole moment (μ) and electric quadrupole moment (Q) using high-resolution collinear laser spectroscopy at ISOLDE-CERN facility; deduced 1f7/2 neutron orbital configuration for 133Sn g.s., and doubly-magic character of 132Sn. 133Sn activity produced in fission of a uranium carbide target by neutrons from spallation reaction on tungsten by high-energy protons, followed by laser ionization and mass selection through a linear Paul trap. Systematics of magnetic dipole moments (μ) and electric quadrupole moments (Q) for N=83 isotones: 133Sn, 135Te, 137Xe, 139Ba, 141Ce, 143Nd, 145Sm, 147Gd and 149Dy. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.102.051301
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2020YO07      Commun. Phys. 3, 107 (2020)

D.T.Yordanov, L.V.Rodriguez, D.L.Balabanski, J.Bieron, M.L.Bissell, K.Blaum, B.Cheal, J.Ekman, G.Gaigalas, R.F.G.Ruiz, G.Georgiev, W.Gins, M.R.Godefroid, C.Gorges, Z.Harman, H.Heylen, P.Jonsson, A.Kanellakopoulos, S.Kaufmann, C.H.Keitel, V.Lagaki, S.Lechner, B.Maass, S.Malbrunot-Ettenauer, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, N.S.Oreshkina, A.Papoulia, P.Pyykko, P.-G.Reinhard, S.Sailer, R.Sanchez, S.Schiffmann, S.Schmidt, L.Wehner, C.Wraith, L.Xie, Z.Xu, X.Yang

Structural trends in atomic nuclei from laser spectroscopy of tin

NUCLEAR MOMENTS 109,115,117,119,121,123,125,127,129,131Sn; measured frequency scales relative to the fine-structure splittings in the transitions; deduced mean square charge-radii changes, high-precision magnetic moments, quadrupole moments.

doi: 10.1038/s42005-020-0348-9
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2019GO12      Phys.Rev.Lett. 122, 192502 (2019)

C.Gorges, L.V.Rodriguez, D.L.Balabanski, M.L.Bissell, K.Blaum, B.Cheal, R.F.Garcia Ruiz, G.Georgiev, W.Gins, H.Heylen, A.Kanellakopoulos, S.Kaufmann, M.Kowalska, V.Lagaki, S.Lechner, B.Maass, S.Malbrunot-Ettenauer, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, P.-G.Reinhard, S.Sailer, R.Sanchez, S.Schmidt, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Laser Spectroscopy of Neutron-Rich Tin Isotopes: A Discontinuity in Charge Radii across the N=82 Shell Closure

NUCLEAR MOMENTS 108,110,112,114,116,118,120,122,124,126,128,130,132,134Sn; measured frequencies; deduced isotope shifts, mean-square nuclear charge radii.

doi: 10.1103/PhysRevLett.122.192502
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2019XI07      Phys.Lett. B 797, 134805 (2019)

L.Xie, X.F.Yang, C.Wraith, C.Babcock, J.Bieron, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, L.Filippin, K.T.Flanagan, R.F.Garcia Ruiz, W.Gins, G.Gaigalas, M.Godefroid, C.Gorges, L.K.Grob, H.Heylen, P.Jonsson, S.Kaufmann, M.Kowalska, J.Kramer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, J.Papuga, R.Sanchez, Y.Tsunoda, D.T.Yordanov

Nuclear charge radii of 62-80Zn and their dependence on cross-shell proton excitations

NUCLEAR MOMENTS 62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80Zn; measured frequencies; deduced isotope shifts, mean square charge radii.

doi: 10.1016/j.physletb.2019.134805
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2018HA30      Phys.Rev.Lett. 121, 102501 (2018)

M.Hammen, W.Nortershauser, D.L.Balabanski, M.L.Bissell, K.Blaum, I.Budincevic, B.Cheal, K.T.Flanagan, N.Frommgen, G.Georgiev, Ch.Geppert, M.Kowalska, K.Kreim, A.Krieger, W.Nazarewicz, R.Neugart, G.Neyens, J.Papuga, P.-G.Reinhard, M.M.Rajabali, S.Schmidt, D.T.Yordanov

From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of 100-130Cd

NUCLEAR MOMENTS 100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130Cd; measured frequencies; deduced differences in mean-square nuclear charge radii, isotope shifts. Comparison with density functional theory predictions.

doi: 10.1103/PhysRevLett.121.102501
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2018RA11      Phys.Rev.Lett. 120, 232503 (2018)

S.Raeder, D.Ackermann, H.Backe, R.Beerwerth, J.C.Berengut, M.Block, A.Borschevsky, B.Cheal, P.Chhetri, Ch.E.Dullmann, V.A.Dzuba, E.Eliav, J.Even, R.Ferrer, V.V.Flambaum, S.Fritzsche, F.Giacoppo, S.Gotz, F.P.Hessberger, M.Huyse, U.Kaldor, O.Kaleja, J.Khuyagbaatar, P.Kunz, M.Laatiaoui, F.Lautenschlager, W.Lauth, A.K.Mistry, E.Minaya Ramirez, W.Nazarewicz, S.G.Porsev, M.S.Safronova, U.I.Safronova, B.Schuetrumpf, P.Van Duppen, T.Walther, C.Wraith, A.Yakushev

Probing Sizes and Shapes of Nobelium Isotopes by Laser Spectroscopy

NUCLEAR MOMENTS 252,253,254No; measured excitation spectra, hyperfine structure components; deduced nuclear magnetic and quadrupole moments, charge radii. Comparison with the state-of-the-art nuclear density functional calculations.

doi: 10.1103/PhysRevLett.120.232503
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2018YA11      Phys.Rev. C 97, 044324 (2018)

X.F.Yang, Y.Tsunoda, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, K.T.Flanagan, R.F.Garcia Ruiz, W.Gins, C.Gorges, L.K.Grob, H.Heylen, S.Kaufmann, M.Kowalska, J.Kramer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, J.Papuga, R.Sanchez, C.Wraith, L.Xie, D.T.Yordanov

Investigating the large deformation of the 5/2+ isomeric state in 73Zn: An indicator for triaxiality

NUCLEAR MOMENTS 73,73mZn; measured hyperfine structure spectra using collinear laser spectroscopy (COLLAPS) at CERN-ISOLDE; deduced spins of ground state and isomer, estimated half-life of the isomer, and found no evidence for a previously proposed 5.6-s isomer. 73,73mZn produced by impinging UCx target by 1.4 GeV protons, and ionized by the resonant ionization laser-ion source (RILIS). 69m,71m,73m,75,77,79Zn; calculated quadrupole moments of ground states and isomers using shell model with JUN45 and A3DA-m interactions, and compared with experimental results from experiments at ISOLDE-CERN. Discussed collectivity in 73Zn.

NUCLEAR STRUCTURE 71,72,73,74,75Zn; calculated potential energy surfaces (PES) of high-spin states in 71,73,75Zn, and 0+, 2+, and 4+ states in 72,74Zn in (Q2, Q4) plane using Monte Carlo shell model (MCSM). 73Zn; calculated levels, J, π, T plots of levels in 73Zn, and compared with experimental data.

doi: 10.1103/PhysRevC.97.044324
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2017NE04      J.Phys.(London) G44, 064002 (2017)

R.Neugart, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, K.T.Flanagan, G.Neyens, W.Nortershauser, D.T.Yordanov

Collinear laser spectroscopy at ISOLDE: new methods and highlights

NUCLEAR MOMENTS 31Mg, 38,39,42,44,46,47,48,49,50,51K, 40,43,44,45,46,47,48,49,50,51,52Ca, 51,53,54,55,56,57,58,59,60,61,62,63,64Mn, 58,59,60,61,62,63,64,65,66,67,68,70Ni, 58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75Cu, 62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80Zn, 63,64Ga, 66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81Ga, 100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129Cd, 109Sn, 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134Sn; measured fluorescence; deduced hyperfine structure (hfs) spectra, nuclear magnetic and quadrupole moments, radii.

doi: 10.1088/1361-6471/aa6642
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2017WR01      Phys.Lett. B 771, 385 (2017)

C.Wraith, X.F.Yang, L.Xie, C.Babcock, J.Bieron, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, L.Filippin, R.F.Garcia Ruiz, W.Gins, L.K.Grob, G.Gaigalas, M.Godefroid, C.Gorges, H.Heylen, M.Honma, P.Jonsson, S.Kaufmann, M.Kowalska, J.Kramer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, F.Nowacki, T.Otsuka, J.Papuga, R.Sanchez, Y.Tsunoda, D.T.Yordanov

Evolution of nuclear structure in neutron-rich odd-Zn isotopes and isomers

NUCLEAR MOMENTS 63,65,67,69,71,73,75,77,79Zn; measured optical spectra; deduced hyperfine spectra (hfs) including isomeric structures, J of ground and isomeric states, hfs constants, nuclear magnetic dipole and quadrupole moments, g-factors and wave functions. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2017.05.085
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2016BA44      Phys.Lett. B 760, 387 (2016)

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

Quadrupole moments of odd-A 53-63Mn: Onset of collectivity towards N = 40

NUCLEAR MOMENTS 53,55,57,59,61,63Mn; measured hyperfine spectra; deduced spectroscopic quadrupole moments. Comparison with large-scale shell model predictions using three effective interactions, GXPF1A, LNPS, modified A3DA.

doi: 10.1016/j.physletb.2016.07.016
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2016BI08      Phys.Rev. C 93, 064318 (2016)

M.L.Bissell, T.Carette, K.T.Flanagan, P.Vingerhoets, J.Billowes, K.Blaum, B.Cheal, S.Fritzsche, M.Godefroid, M.Kowalska, J.Kramer, R.Neugart, G.Neyens, W.Nortershauser, D.T.Yordanov

Cu charge radii reveal a weak sub-shell effect at N=40

ATOMIC PHYSICS 58,59,60,61,62,63,64,65,66,67,68,68m,69,70,70m,71,72,73,74,75Cu; measured isotope shifts, and mean-square charge radii using collinear laser spectroscopy at the CERN-ISOLDE radioactive ion beam facility. The Cu isotopes were produced in Zr(p, X), E=1.4 GeV reaction using RILIS laser ion source and linear Paul trap ISCOOL for separation. Comparison with muonic atomic data, and state-of-the-art atomic physics calculations using multiconfiguration Dirac-Hartree-Fock (MCDHF) method.

doi: 10.1103/PhysRevC.93.064318
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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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2016LA25      Nature(London) 535, 495 (2016)

M.Laatiaoui, W.Lauth, H.Backe, Mi.Block, D.Ackermann, B.Cheal, P.Chhetri, C.E.Dullmann, P.van Duppen, J.Even, R.Ferrer, F.Giacoppo, S.Gotz, F.P.Hessberger, M.Huyse, O.Kaleja, J.Khuyagbaatar, P.Kunz, F.Lautenschlager, A.K.Mistry, S.Raeder, E.Minaya Ramirez, T.Walther, C.Wraith, A.Yakushev

Atom-at-a-time laser resonance ionization spectroscopy of nobelium

NUCLEAR REACTIONS 206,208Pb(48Ca, 2n), E=217 MeV; measured reaction products; deduced σ, ground-state transition, an upper limit for the ionization potential of nobelium.

doi: 10.1038/nature19345
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2016YA02      Phys.Rev.Lett. 116, 182502 (2016)

X.F.Yang, C.Wraith, L.Xie, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, K.T.Flanagan, R.F.Garcia Ruiz, W.Gins, C.Gorges, L.K.Grob, H.Heylen, S.Kaufmann, M.Kowalska, J.Kraemer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, R.Sanchez, D.T.Yordanov

Isomer Shift and Magnetic Moment of the Long-Lived 1/2+ Isomer in 7930Zn49: Signature of Shape Coexistence near 78Ni

NUCLEAR MOMENTS 67,79Zn [from U(p, X), E=1.4 GeV]; measured hyperfine spectra of the ground and isomeric states; deduced nuclear moments, g factors, root-mean-square charge radii. Comparison with available data.

doi: 10.1103/PhysRevLett.116.182502
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2016YO01      Phys.Rev.Lett. 116, 032501 (2016)

D.T.Yordanov, D.L.Balabanski, M.L.Bissell, K.Blaum, I.Budincevic, B.Cheal, K.Flanagan, N.Frommgen, G.Georgiev, Ch.Geppert, M.Hammen, M.Kowalska, K.Kreim, A.Krieger, J.Meng, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, J.Papuga, S.Schmidt, P.W.Zhao

Simple Nuclear Structure in 111-129Cd from Atomic Isomer Shifts

NUCLEAR MOMENTS 111,113,115,117,119,121,123,125,127,129Cd; measured spectral lines; deduced isomer shifts and differential mean square charge radii, quadrupole moments. Comparison with covariant density functional theory.

doi: 10.1103/PhysRevLett.116.032501
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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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2015FR08      Eur.Phys.J. D 69, 164 (2015)

N.Frommgen, D.L.Balabanski, M.L.Bissell, J.Bieron, K.Blaum, B.Cheal, K.Flanagan, S.Fritzsche, C.Geppert, M.Hammen, M.Kowalska, K.Kreim, A.Krieger, R.Neugart, G.Neyens, M.M.Rajabali, W.Nortershauser, J.Papuga, D.T.Yordanov

Collinear laser spectroscopy of atomic cadmium

NUCLEAR MOMENTS 107,109,111,113,115,117,119,121,123Cd; measured frequencies; deduced hyperfine structure factors, nuclear magnetic moments and electric quadrupole moments. Comparison with multi-configuration Dirac-Hartree-Fock calculations. Colinear laser spectroscopy at Isolde.

doi: 10.1140/epjd/e2015-60219-0
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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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2015PR03      Eur.Phys.J. A 51, 23 (2015)

T.J.Procter, J.A.Behr, J.Billowes, F.Buchinger, B.Cheal, J.E.Crawford, J.Dilling, A.B.Garnsworthy, A.Leary, C.D.P.Levy, E.Mane, M.R.Pearson, O.Shelbaya, M.Stolz, W.Al Tamimi, A.Voss

Direct observation of an isomeric state in 98Rb and nuclear properties of exotic rubidium isotopes measured by laser spectroscopy

NUCLEAR REACTIONS U(p, x)Rb, E=500 MeV; measured Rb isotopes using TITAN mass trap or optical spectrum using laser spectroscopy. 98Rb deduced isomeric state, hyperfine coefficients, isotope shifts. 75,76,78Rb deduced magnetic dipole moment, electric quadrupole moment, deformation, charge radii, isotopic shifts, g-factors.

ATOMIC PHYSICS U(p, x)Rb, E=500 MeV; measured E(optical γ); deduced isotopic shifts, charge radii. Compared with published muonic and optical data.

doi: 10.1140/epja/i2015-15023-2
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2015VO05      Phys.Rev. C 91, 044307 (2015)

A.Voss, F.Buchinger, B.Cheal, J.E.Crawford, J.Dilling, M.Kortelainen, A.A.Kwiatkowski, A.Leary, C.D.P.Levy, F.Mooshammer, M.L.Ojeda, M.R.Pearson, T.J.Procter, W.Al Tamimi

Nuclear moments and charge radii of neutron-deficient francium isotopes and isomers

NUCLEAR MOMENTS 204,204m,205,206,206m,208Fr; measured optical fluorescence and hyperfine structure spectra using Collinear laser fluorescence spectroscopy technique at TRIUMF-ISAC facility; deduced spins, isotope shifts, hyperfine coupling constants, magnetic moments, charge radii, spectroscopic electric quadrupole moments, two isomeric states in 206Fr. Comparison with previous experimental results, and with theoretical calculations within the energy density functional (EDF) framework using Skyrme parametrization UNEDF0 and HFBTHO computer code for A=204-213 Fr isotopes. Activities of Fr produced in U(p, X), E=500 MeV reaction.

doi: 10.1103/PhysRevC.91.044307
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2013VO10      Phys.Rev.Lett. 111, 122501 (2013)

A.Voss, M.R.Pearson, J.Billowes, F.Buchinger, B.Cheal, J.E.Crawford, A.A.Kwiatkowski, C.D.P.Levy, O.Shelbaya

First Use of High-Frequency Intensity Modulation of Narrow-Linewidth Laser Light and Its Application in Determination of 206, 205, 204Fr Ground-State Properties

NUCLEAR MOMENTS 204,205,206Fr; measured hyperfine structure; deduced nuclear ground-state J, mean-square charge radii, nuclear magnetic moments. Comparison with available data, AME2012.

doi: 10.1103/PhysRevLett.111.122501
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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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2012FL05      J.Phys.(London) G39, 125101 (2012)

K.T.Flanagan, J.Billowes, P.Campbell, B.Cheal, G.D.Dracoulis, D.H.Forest, M.D.Gardner, J.Huikari, A.Jokinen, B.A.Marsh, R.Moore, A.Nieminen, H.Penttila, H.L.Thayer, G.Tungate, J.Aysto

Nuclear moments, charge radii and spins of the ground and isomeric states in 175Yb and 177Yb

NUCLEAR MOMENTS 175,177Yb; measured hyperfine structures; deduced static moments and changes in mean-square charge radii. Collinear laser spectroscopy at the IGISOL facility, comparison with Nilsson model.

doi: 10.1088/0954-3899/39/12/125101
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2012LY04      J.Phys.:Conf.Ser. 381, 012128 (2012)

K.M.Lynch, M.M.Rajabali, H.Aghaei-Khozani, J.Billowes, M.L.Bissell, F.Le Blanc, B.Cheal, T.E.Cocolios, S.De Schepper, K.Dewolf, K.T.Flanagan, M.Hori, T.Kobayashi, B.A.Marsh, G.Neyens, J.Papuga, T.J.Procter, S.Rothe, G.Simpson, A.J.Smith, H.H.Stroke, K.Wendt

Laser assisted decay spectroscopy at the CRIS beam line at ISOLDE

doi: 10.1088/1742-6596/381/1/012128
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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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2012PR15      J.Phys.:Conf.Ser. 381, 012070 (2012)

T.J.Procter, H.Aghaei-Khozani, J.Billowes, M.L.Bissell, F.Le Blanc, B.Cheal, T.E.Cocolios, K.T.Flanagan, H.Hori, T.Kobayashi, D.Lunney, K.M.Lynch, B.A.Marsh, G.Neyens, J.Papuga, M.M.Rajabali, S.Rothe, G.Simpson, A.J.Smith, H.H.Stroke, W.Vanderheijden, K.Wendt

Development of the CRIS (Collinear Resonant Ionisation Spectroscopy) beam line

doi: 10.1088/1742-6596/381/1/012070
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2011AV01      J.Phys.(London) G38, 025104 (2011)

M.Avgoulea, Yu.P.Gangrsky, K.P.Marinova, S.G.Zemlyanoi, S.Fritzsche, D.Iablonskyi, C.Barbieri, E.C.Simpson, P.D.Stevenson, J.Billowes, P.Campbell, B.Cheal, B.Tordoff, M.L.Bissell, D.H.Forest, M.D.Gardner, G.Tungate, J.Huikari, A.Nieminen, H.Penttila, J.Aysto

Nuclear charge radii and electromagnetic moments of radioactive scandium isotopes and isomers

NUCLEAR MOMENTS 42,43,44,45,46Sc; measured hyperfine structure; deduced nuclear magnetic dipole moments and electric quadrupole moments, isotope shifts, charge radii, deformation. Shell model calculation, laser spectroscopy.

NUCLEAR STRUCTURE 42,43,44,45,46Sc, 40,41,42,43,44,45,46,47,48Ca; calculated nuclear isomer shifts, radii, magnetic moment, spectroscopic quadrupole moments. Comparison with other data.

doi: 10.1088/0954-3899/38/2/025104
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2011MA45      Phys.Rev. C 84, 024303 (2011)

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

Ground-state spins and moments of 72, 74, 76, 78Ga nuclei

NUCLEAR MOMENTS 72,74,76,78,80Ga; measured hyperfine structure using laser spectroscopy and RILIS source at ISOLDE, CERN; deduced hyperfine structure parameters, ground state spins, magnetic dipole moments, electric quadrupole moments, configurations. Comparison with Shell Model calculations.

NUCLEAR STRUCTURE 74,76,78,80Ga; calculated levels, J, π using shell-model with the jj44b effective interaction, and proton configuration. 71,73,75,77,79,81Ga; calculated percentage occupation of the πp3/2 and πf5/2 orbitals in the ground states.

doi: 10.1103/PhysRevC.84.024303
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2011VI03      Phys.Lett. B 703, 34 (2011)

P.Vingerhoets, K.T.Flanagan, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, M.De Rydt, D.H.Forest, Ch.Geppert, M.Honma, M.Kowalska, J.Kramer, K.Kreim, A.Krieger, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, T.J.Procter, M.M.Rajabali, R.Sanchez, H.H.Stroke, D.T.Yordanov

Magnetic and quadrupole moments of neutron deficient 58-62Cu isotopes

NUCLEAR MOMENTS 58,59,60,61,62Cu; measured hyperfine spectrum; deduced ground state nuclear moments, g factors, quadrupole moments, ground-state hyperfine parameters. Comparison with large-scale shell model calculations, GXPF1A effective interaction.

NUCLEAR STRUCTURE 57,58,59,60,61,62,63,64,65,66,67,68Cu; calculated level energies, J, π, g factors, quadrupole moments. GXPF1A effective interaction. Comparison with experimental data.

doi: 10.1016/j.physletb.2011.07.050
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2010BA31      J.Phys.(London) G37, 105103 (2010)

K.Baczynska, J.Billowes, P.Campbell, F.C.Charlwood, B.Cheal, T.Eronen, D.H.Forest, A.Jokinen, T.Kessler, I.D.Moore, M.Ruffer, G.Tungate, J.Aysto

Nuclear spin determination of 100mY by collinear laser spectroscopy of optically pumped ions

NUCLEAR REACTIONS U(p, F)89Y/96Y/98Y/99Y/100Y, E=30 MeV; measured hyperfine resonance fluorescence spectra; deduced isotope shifts, hyperfine parameters, nuclear spin and prolate shape.

doi: 10.1088/0954-3899/37/10/105103
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2010CH15      Phys.Lett. B 690, 346 (2010)

F.C.Charlwood, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, S.Fritzsche, M.Honma, A.Jokinen, I.D.Moore, H.Penttila, R.Powis, A.Saastamoinen, G.Tungate, J.Aysto

Ground state properties of manganese isotopes across the N=28 shell closure

NUCLEAR REACTIONS 50,52Cr(p, n), E=14 MeV; 50Cr(d, n), E=13 MeV;55Mn(p, xnp)53Mn/54Mn, E=33 MeV; 56Fe(d, 2p), E=25 MeV; measured hyperfine spectra; deduced magnetic dipole moments, quadrupole moments, mean-square charge radii, shell closure. Comparison with shell model calculation using GXPF1A interaction.

doi: 10.1016/j.physletb.2010.05.060
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2010CH16      Phys.Rev.Lett. 104, 252502 (2010)

B.Cheal, E.Mane, J.Billowes, M.L.Bissell, K.Blaum, B.A.Brown, F.C.Charlwood, K.T.Flanagan, D.H.Forest, C.Geppert, M.Honma, A.Jokinen, M.Kowalska, A.Krieger, J.Kramer, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, M.Schug, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Nuclear Spins and Moments of Ga Isotopes Reveal Sudden Structural Changes between N=40 and N=50

NUCLEAR REACTIONS U(p, X)67Ga/69Ga/71Ga/73Ga/75Ga/77Ga/79Ga/81Ga, E=1.4 GeV; measured optical hfs spectra; deduced ground J, π, magnetic dipole and electric quadrupole moments, anomalous ground state spins.

doi: 10.1103/PhysRevLett.104.252502
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2010CH36      J.Phys.(London) G37, 113101 (2010)

B.Cheal, K.T.Flanagan

Progress in laser spectroscopy at radioactive ion beam facilities

doi: 10.1088/0954-3899/37/11/113101
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2010CH50      Phys.Rev. C 82, 051302 (2010)

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

Discovery of a long-lived low-lying isomeric state in 80Ga

NUCLEAR MOMENTS 80Ga; measured optical hyperfine structure spectra, spins, magnetic dipole moments, electric quadrupole moments, half-lives using Collinear laser spectroscopy at ISOLDE, CERN. 80Ga; deduced levels, J, π, isomer, configurations. Comparison with shell-model calculations in restricted and full pfg-model space with a 56Ni core

doi: 10.1103/PhysRevC.82.051302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2010FL02      Phys.Rev. C 82, 041302 (2010)

K.T.Flanagan, P.Vingerhoets, M.L.Bissell, K.Blaum, B.A.Brown, B.Cheal, M.De Rydt, D.H.Forest, Ch.Geppert, M.Honma, M.Kowalska, J.Kramer, A.Krieger, E.Mane, R.Neugart, G.Neyens, W.Nortershauser, M.Schug, H.H.Stroke, D.T.Yordanov

Experimental determination of an Iπ=2- ground state in 72, 74Cu

NUCLEAR MOMENTS 72Cu, 74Cu; measured resonance fluorescence spectra, hyperfine structure parameters, spins, static magnetic dipole and electric quadrupole moments of the ground states using collinear laser spectroscopy at the CERN on-Line Isotope Mass Separator (ISOLDE) facility. Comparison with shell-model calculations using the JUN45 interaction.

NUCLEAR STRUCTURE 71,72,73,74,75Cu; calculated levels, J, π using large-scale shell-model calculations and several interactions.

doi: 10.1103/PhysRevC.82.041302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2010VI07      Phys.Rev. C 82, 064311 (2010)

P.Vingerhoets, K.T.Flanagan, M.Avgoulea, J.Billowes, M.L.Bissell, K.Blaum, B.A.Brown, B.Cheal, M.De Rydt, D.H.Forest, Ch.Geppert, M.Honma, M.Kowalska, J.Kramer, A.Krieger, E.Mane, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, M.Schug, H.H.Stroke, G.Tungate, D.T.Yordanov

Nuclear spins, magnetic moments, and quadrupole moments of Cu isotopes from N=28 to N=46: Probes for core polarization effects

NUCLEAR MOMENTS 61,62,63,64,65,66,67,68,69,70,71,72,73,74,75Cu; measured hyperfine structure spectra, spins, magnetic dipole moments, electric quadrupole moments using collinear laser spectroscopy at CERN-ISOLDE. RILIS source and Paul trap ISCOOL. Comparison with shell-model calculations.

NUCLEAR REACTIONS U(p, X)61Cu/62Cu/63Cu/64Cu/65Cu/66Cu/67Cu/68Cu/68mCu/69Cu/70Cu/70mCu/71Cu/72Cu/73Cu/74Cu/75Cu/, E=1.4 GeV; measured production yields.

NUCLEAR STRUCTURE 57,58,59,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,77,79Cu; calculated levels, J, π, g factors and quadrupole moments using large-scale shell model starting from a 56Ni core

doi: 10.1103/PhysRevC.82.064311
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Data from this article have been entered in the XUNDL database. For more information, click here.


2009CH09      Phys.Lett. B 674, 23 (2009)

F.C.Charlwood, K.Baczynska, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, A.Jokinen, T.Kessler, I.D.Moore, H.Penttila, R.Powis, M.Ruffer, A.Saastamoinen, G.Tungate, J.Aysto

Nuclear charge radii of molybdenum fission fragments

NUCLEAR MOMENTS 90,91,92,94,95,96,97,98,100,102,103,104,105,106,108Mo; measured hfs; deduced hyperfine structure coefficients, charge radius, magnetic moment. Collinear laser spectroscopy.

doi: 10.1016/j.physletb.2009.02.050
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2009CH25      Phys.Rev.Lett. 102, 222501 (2009)

B.Cheal, K.Baczynska, J.Billowes, P.Campbell, F.C.Charlwood, T.Eronen, D.H.Forest, A.Jokinen, T.Kessler, I.D.Moore, M.Reponen, S.Rothe, M.Ruffer, A.Saastamoinen, G.Tungate, J.Aysto

Laser Spectroscopy of Niobium Fission Fragments: First Use of Optical Pumping in an Ion Beam Cooler Buncher

NUCLEAR MOMENTS 90,91,92,93,99,101,103Nb; measured collinear fluorescence spectra, hfs coefficients; deduced magnetic dipole, electric quadrupole moments, mean-square charge radii.

doi: 10.1103/PhysRevLett.102.222501
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2009FL03      Phys.Rev.Lett. 103, 142501 (2009)

K.T.Flanagan, P.Vingerhoets, M.Avgoulea, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, M.De Rydt, V.N.Fedosseev, D.H.Forest, Ch.Geppert, U.Koster, M.Kowalska, J.Kramer, K.L.Kratz, A.Krieger, E.Mane, B.A.Marsh, T.Materna, L.Mathieu, P.L.Molkanov, R.Neugart, G.Neyens, W.Nortershauser, M.D.Seliverstov, O.Serot, M.Schug, M.A.Sjoedin, J.R.Stone, N.J.Stone, H.H.Stroke, G.Tungate, D.T.Yordanov, Yu.M.Volkov

Nuclear Spins and Magnetic Moments of 71, 73, 75Cu: Inversion of π2p3/2 and π1f5/2 Levels in 75Cu

NUCLEAR MOMENTS 71,73,75Cu; measured hfs spectra; deduced ground-state spins, magnetic moments, hyperfine parameters, shell inversion. Comparison with large-scale shell-model calculation.

doi: 10.1103/PhysRevLett.103.142501
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2009MA75      Eur.Phys.J. A 42, 503 (2009)

E.Mane, J.Billowes, K.Blaum, P.Campbell, B.Cheal, P.Delahaye, K.T.Flanagan, D.H.Forest, H.Franberg, C.Geppert, T.Giles, A.Jokinen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, I.Podadera, G.Tungate, P.Vingerhoets, D.T.Yordanov

An ion cooler-buncher for high-sensitivity collinear laser spectroscopy at ISOLDE

NUCLEAR MOMENTS 46K; measured hfs. Testing of new laser spectroscopy technique.

doi: 10.1140/epja/i2009-10828-0
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2007BI14      Phys.Lett. B 645, 330 (2007)

M.L.Bissell, K.T.Flanagan, M.D.Gardner, M.Avgoulea, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, J.Huikari, A.Jokinen, I.D.Moore, A.Nieminen, H.Penttila, S.Rinta-Antila, B.Tordoff, G.Tungate, J.Aysto

On the decrease in charge radii of multi-quasi particle isomers

NUCLEAR MOMENTS 97mY, 176,176mYb, 178,178mHf; measured isomer shifts, μ, quadrupole moments, radii; deduced hyperfine structure coefficients. Laser spectroscopy.

doi: 10.1016/j.physletb.2006.12.054
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2007CH07      Phys.Lett. B 645, 133 (2007)

B.Cheal, M.D.Gardner, M.Avgoulea, J.Billowes, M.L.Bissell, P.Campbell, T.Eronen, K.T.Flanagan, D.H.Forest, J.Huikari, A.Jokinen, B.A.Marsh, I.D.Moore, A.Nieminen, H.Penttila, S.Rinta-Antila, B.Tordoff, G.Tungate, J.Aysto

The shape transition in the neutron-rich yttrium isotopes and isomers

NUCLEAR MOMENTS 86,87,87m,88,88m,89,89m,90,90m,92,93,93m,94,95,96,96m,97,97m,98,98m,99,100,101,102Y; measured isotope and isomer shifts, μ, quadrupole moments, radii, deformation. Laser spectroscopy.

doi: 10.1016/j.physletb.2006.12.053
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2006BI14      Phys.Rev. C 74, 047301 (2006)

M.L.Bissell, K.Baczynska, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, M.D.Gardner, I.D.Moore, B.Tordoff, G.Tungate, J.Aysto

Model independent determination of the spin of the 180Ta naturally occurring isomer

NUCLEAR MOMENTS 180,181Ta; measured hfs; deduced hyperfine structure coefficients. 180mTa deduced isomeric state J. Collinear laser spectroscopy.

doi: 10.1103/PhysRevC.74.047301
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2006GA47      Hyperfine Interactions 171, 209 (2006)

Y.Gangrsky, K.Marinova, S.Zemlyanoi, M.Avgoulea, J.Billowes, P.Campbell, B.Cheal, B.Tordoff, M.Bissell, D.H.Forest, M.Gardner, G.Tungate, J.Huikari, H.Penttila, J.Aysto

Nuclear charge radii and electromagnetic moments of scandium isotopes and isomers in the f7/2 shell

NUCLEAR MOMENTS 42,43,44,44m,45,45m,46Sc; measured hfs, isotope shifts; deduced μ, quadrupole moments. Collinear laser spectroscopy.

doi: 10.1007/s10751-006-9488-x
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2006MO42      Hyperfine Interactions 171, 135 (2006)

I.D.Moore, T.Kessler, J.Aysto, J.Billowes, P.Campbell, B.Cheal, B.Tordoff, M.L.Bissel, G.Tungate

Resonance ionization spectroscopy of bismuth at the IGISOL facility

NUCLEAR MOMENTS 209Bi; measured hfs. Resonance ionization spectroscopy.

doi: 10.1007/s10751-006-9494-z
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2006TO17      Hyperfine Interactions 171, 197 (2006)

B.Tordoff, J.Billowes, P.Campbell, B.Cheal, D.H.Forest, T.Kessler, J.Lee, I.D.Moore, A.Popov, G.Tungate, J.Aysto

Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy

doi: 10.1007/s10751-006-9487-y
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2003CH60      J.Phys.(London) G29, 2479 (2003)

B.Cheal, M.Avgoulea, J.Billowes, P.Campbell, K.T.Flanagan, D.H.Forest, M.D.Gardner, J.Huikari, B.A.Marsh, A.Nieminen, H.L.Thayer, G.Tungate, J.Aysto

Collinear laser spectroscopy of neutron-rich cerium isotopes near the N = 88 shape transition

NUCLEAR MOMENTS 144,146,148Ce; measured isotope shifts; deduced relative charge radii. Collinear laser spectroscopy.

doi: 10.1088/0954-3899/29/11/003
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