Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50

B. Cheal; E. Mané; 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. Krämer; I. D. Moore; R. Neugart; G. Neyens; W. Nörtershäuser; M. Schug; H. H. Stroke; P. Vingerhoets; D. T. Yordanov; M. Žáková

doi:10.1103/PhysRevLett.104.252502

Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50

B. Cheal, E. Mané, 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. Krämer, I. D. Moore, R. Neugart, G. Neyens, W. Nörtershäuser, M. SchugH. H. Stroke, P. Vingerhoets, D. T. Yordanov, M. Žáková

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Abstract

Collinear laser spectroscopy was performed on Ga (Z=31) isotopes at ISOLDE, CERN. A gas-filled linear Paul trap (ISCOOL) was used to extend measurements towards very neutron-rich isotopes (N=36-50). A ground state (g.s.) spin I=1/2 is measured for Ga73, being near degenerate with a 3/2^- isomer (75eV Eex 1keV). The Ga79 g.s., with I=3/2, is dominated by protons in the πf5/2 orbital and in Ga81 the 5/2^- level becomes the g.s. The data are compared to shell-model calculations in the f5/2pg9/2 model space, calling for further theoretical developments and new experiments.

Original language	English (US)
Article number	252502
Journal	Physical Review Letters
Volume	104
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.104.252502
State	Published - Jun 23 2010

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.104.252502

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Cheal, B., Mané, E., Billowes, J., Bissell, M. L., Blaum, K., Brown, B. A., Charlwood, F. C., Flanagan, K. T., Forest, D. H., Geppert, C., Honma, M., Jokinen, A., Kowalska, M., Krieger, A., Krämer, J., Moore, I. D., Neugart, R., Neyens, G., Nörtershäuser, W., ... Žáková, M. (2010). Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50. Physical Review Letters, 104(25), Article 252502. https://doi.org/10.1103/PhysRevLett.104.252502

Cheal, B, Mané, E, Billowes, J, Bissell, ML, Blaum, K, Brown, BA, Charlwood, FC, Flanagan, KT, Forest, DH, Geppert, C, Honma, M, Jokinen, A, Kowalska, M, Krieger, A, Krämer, J, Moore, ID, Neugart, R, Neyens, G, Nörtershäuser, W, Schug, M, Stroke, HH, Vingerhoets, P, Yordanov, DT & Žáková, M 2010, 'Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50', Physical Review Letters, vol. 104, no. 25, 252502. https://doi.org/10.1103/PhysRevLett.104.252502

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title = "Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50",

abstract = "Collinear laser spectroscopy was performed on Ga (Z=31) isotopes at ISOLDE, CERN. A gas-filled linear Paul trap (ISCOOL) was used to extend measurements towards very neutron-rich isotopes (N=36-50). A ground state (g.s.) spin I=1/2 is measured for Ga73, being near degenerate with a 3/2- isomer (75eV Eex 1keV). The Ga79 g.s., with I=3/2, is dominated by protons in the πf5/2 orbital and in Ga81 the 5/2- level becomes the g.s. The data are compared to shell-model calculations in the f5/2pg9/2 model space, calling for further theoretical developments and new experiments.",

author = "B. Cheal and E. Man{\'e} and J. Billowes and Bissell, {M. L.} and K. Blaum and Brown, {B. A.} and Charlwood, {F. C.} and Flanagan, {K. T.} and Forest, {D. H.} and C. Geppert and M. Honma and A. Jokinen and M. Kowalska and A. Krieger and J. Kr{\"a}mer and Moore, {I. D.} and R. Neugart and G. Neyens and W. N{\"o}rtersh{\"a}user and M. Schug and Stroke, {H. H.} and P. Vingerhoets and Yordanov, {D. T.} and M. {\v Z}{\'a}kov{\'a}",

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doi = "10.1103/PhysRevLett.104.252502",

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T1 - Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50

AU - Cheal, B.

AU - Mané, E.

AU - Billowes, J.

AU - Bissell, M. L.

AU - Blaum, K.

AU - Brown, B. A.

AU - Charlwood, F. C.

AU - Flanagan, K. T.

AU - Forest, D. H.

AU - Geppert, C.

AU - Honma, M.

AU - Jokinen, A.

AU - Kowalska, M.

AU - Krieger, A.

AU - Krämer, J.

AU - Moore, I. D.

AU - Neugart, R.

AU - Neyens, G.

AU - Nörtershäuser, W.

AU - Schug, M.

AU - Stroke, H. H.

AU - Vingerhoets, P.

AU - Yordanov, D. T.

AU - Žáková, M.

PY - 2010/6/23

Y1 - 2010/6/23

N2 - Collinear laser spectroscopy was performed on Ga (Z=31) isotopes at ISOLDE, CERN. A gas-filled linear Paul trap (ISCOOL) was used to extend measurements towards very neutron-rich isotopes (N=36-50). A ground state (g.s.) spin I=1/2 is measured for Ga73, being near degenerate with a 3/2- isomer (75eV Eex 1keV). The Ga79 g.s., with I=3/2, is dominated by protons in the πf5/2 orbital and in Ga81 the 5/2- level becomes the g.s. The data are compared to shell-model calculations in the f5/2pg9/2 model space, calling for further theoretical developments and new experiments.

AB - Collinear laser spectroscopy was performed on Ga (Z=31) isotopes at ISOLDE, CERN. A gas-filled linear Paul trap (ISCOOL) was used to extend measurements towards very neutron-rich isotopes (N=36-50). A ground state (g.s.) spin I=1/2 is measured for Ga73, being near degenerate with a 3/2- isomer (75eV Eex 1keV). The Ga79 g.s., with I=3/2, is dominated by protons in the πf5/2 orbital and in Ga81 the 5/2- level becomes the g.s. The data are compared to shell-model calculations in the f5/2pg9/2 model space, calling for further theoretical developments and new experiments.

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Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50

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