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g-factor Measurements at RISING: The Cases of 127Sn and 128Sn

Atanasova, L.; Balabanski, D. L.; Chamoli, S. K.; Hass, M.; Simpson, G. S.; Bazzacco, D.; Becker, F.; Bednarczyk, P.; Benzoni, G. and Blasi, N., et al. (2010) In Europhysics Letters 91(4).
Abstract
We report on g-factor measurements of the 19/2(+) T-1/2 = 4.5(3) mu s isomer in Sn-127 and the 10(+) T-1/2 = 2.69(23) mu s isomer in Sn-128. These isomers were produced and spin-aligned in relativistic heavy-ion fragmentation at GSI and were selected and separated by the GSI fragment separator ( FRS). The gamma-rays of the isomeric decay were detected by the RISING gamma-ray spectrometer. The method of time-differential perturbed angular distributions was utilized. The measured g-factors, g(19/2(+); Sn-127) =-0.17(2) and g(10(+); Sn-128)=-0.20(4), are compared with shell model calculations. The measured g-factors confirm the predominantly nu h(11/2)(-2) and nu(s(1/2)(-1) h(11/2)(-2)) character of the 10(+) and 19/2(-) isomers in Sn-128 and... (More)
We report on g-factor measurements of the 19/2(+) T-1/2 = 4.5(3) mu s isomer in Sn-127 and the 10(+) T-1/2 = 2.69(23) mu s isomer in Sn-128. These isomers were produced and spin-aligned in relativistic heavy-ion fragmentation at GSI and were selected and separated by the GSI fragment separator ( FRS). The gamma-rays of the isomeric decay were detected by the RISING gamma-ray spectrometer. The method of time-differential perturbed angular distributions was utilized. The measured g-factors, g(19/2(+); Sn-127) =-0.17(2) and g(10(+); Sn-128)=-0.20(4), are compared with shell model calculations. The measured g-factors confirm the predominantly nu h(11/2)(-2) and nu(s(1/2)(-1) h(11/2)(-2)) character of the 10(+) and 19/2(-) isomers in Sn-128 and Sn-127, respectively. The results demonstrate the feasibility of the method for similar measurements in exotic neutron-rich nuclei. Copyright (C) EPLA, 2010 (Less)
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Europhysics Letters
volume
91
issue
4
publisher
EDP Sciences
external identifiers
  • wos:000281978400010
  • scopus:78751645728
ISSN
0295-5075
DOI
10.1209/0295-5075/91/42001
language
English
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yes
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1737bdf8-9de3-4ee4-8f5a-cb2e2cf1ef70 (old id 1727264)
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2010-11-26 14:10:49
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@article{1737bdf8-9de3-4ee4-8f5a-cb2e2cf1ef70,
  abstract     = {We report on g-factor measurements of the 19/2(+) T-1/2 = 4.5(3) mu s isomer in Sn-127 and the 10(+) T-1/2 = 2.69(23) mu s isomer in Sn-128. These isomers were produced and spin-aligned in relativistic heavy-ion fragmentation at GSI and were selected and separated by the GSI fragment separator ( FRS). The gamma-rays of the isomeric decay were detected by the RISING gamma-ray spectrometer. The method of time-differential perturbed angular distributions was utilized. The measured g-factors, g(19/2(+); Sn-127) =-0.17(2) and g(10(+); Sn-128)=-0.20(4), are compared with shell model calculations. The measured g-factors confirm the predominantly nu h(11/2)(-2) and nu(s(1/2)(-1) h(11/2)(-2)) character of the 10(+) and 19/2(-) isomers in Sn-128 and Sn-127, respectively. The results demonstrate the feasibility of the method for similar measurements in exotic neutron-rich nuclei. Copyright (C) EPLA, 2010},
  articleno    = {42001},
  author       = {Atanasova, L. and Balabanski, D. L. and Chamoli, S. K. and Hass, M. and Simpson, G. S. and Bazzacco, D. and Becker, F. and Bednarczyk, P. and Benzoni, G. and Blasi, N. and Blazhev, A. and Bracco, A. and Brandau, C. and Caceres, L. and Camera, F. and Crespi, F. C. L. and Detistov, P. and Doornenbal, P. and Fahlander, Claes and Farnea, E. and Georgiev, G. and Gerl, J. and Gladnishki, K. A. and Gorska, M. and Grebosz, J. and Hoischen, Robert and Ilie, G. and Ionescu-Bujor, M. and Iordachescu, A. and Jungclaus, A. and Lo Bianco, G. and Kmiecik, M. and Kojouharov, I. and Kurz, N. and Lakshmi, S. and Lozeva, R. and Maj, A. and Montanari, D. and Neyens, G. and Pfuetzner, M. and Pietri, S. and Podolyak, Zs. and Prokopowicz, W. and Rudolph, Dirk and Rusev, G. and Saito, T. R. and Saltarelli, A. and Schaffner, H. and Schwengner, R. and Tashenov, S. and Valiente-Dobon, J. J. and Vermeulen, N. and Walker, J. and Werner-Malento, E. and Wieland, O. and Wollersheim, H. J. and Grawe, H. and Hjorth-Jensen, M.},
  issn         = {0295-5075},
  language     = {eng},
  number       = {4},
  publisher    = {EDP Sciences},
  series       = {Europhysics Letters},
  title        = {g-factor Measurements at RISING: The Cases of 127Sn and 128Sn},
  url          = {http://dx.doi.org/10.1209/0295-5075/91/42001},
  volume       = {91},
  year         = {2010},
}