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Structure of Neutron-rich Nuclei Around the N=126 Closed Shell; the Yrast Structure of 205Au up to Spin-parity I = (19/2+)

Podolyak, Zs.; Steer, S. J.; Pietri, S.; Gorska, M.; Regan, P. H.; Rudolph, Dirk LU ; Garnsworthy, A. B.; Hoischen, Robert LU ; Gerl, J. and Wollersheim, H. J., et al. (2009) 5th International Conference on Exotic Nuclei and Atomic Masses (ENAM'08) In European Physical Journal A 42(3). p.489-493
Abstract
Heavy neutron-rich nuclei have been populated through the relativistic fragmentation of a Pb-208(82) beam at E/A = 1 GeV on a 2.5 g/cm(2) thick Be target. The synthesised nuclei were selected and identified in-flight using the fragment separator at GSI. Approximately 300 ns after production, the selected nuclei were implanted in an similar to 8 mm thick perspex stopper, positioned at the centre of the RISING gamma-ray detector spectrometer array. A previously unreported isomer with a half-life T-1/2 = 163(5) ns has been observed in the N = 126 closed-shell nucleus Au-205(79). Through gamma-ray singles and gamma-gamma coincidence analysis a level scheme was established. The comparison with a shell model calculation tentatively identifies... (More)
Heavy neutron-rich nuclei have been populated through the relativistic fragmentation of a Pb-208(82) beam at E/A = 1 GeV on a 2.5 g/cm(2) thick Be target. The synthesised nuclei were selected and identified in-flight using the fragment separator at GSI. Approximately 300 ns after production, the selected nuclei were implanted in an similar to 8 mm thick perspex stopper, positioned at the centre of the RISING gamma-ray detector spectrometer array. A previously unreported isomer with a half-life T-1/2 = 163(5) ns has been observed in the N = 126 closed-shell nucleus Au-205(79). Through gamma-ray singles and gamma-gamma coincidence analysis a level scheme was established. The comparison with a shell model calculation tentatively identifies the spin-parity of the excited states, including the isomer itself, which is found to be I-pi = (19/2(+)). (Less)
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Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
European Physical Journal A
volume
42
issue
3
pages
5 pages
publisher
Springer
conference name
5th International Conference on Exotic Nuclei and Atomic Masses (ENAM'08)
external identifiers
  • wos:000273035200034
  • scopus:73849151563
ISSN
1434-6001
DOI
10.1140/epja/i2009-10794-5
language
English
LU publication?
yes
id
04567a24-0386-402d-baf3-fe09ff43b1b4 (old id 1532051)
date added to LUP
2010-01-29 14:39:26
date last changed
2017-01-01 06:33:08
@inproceedings{04567a24-0386-402d-baf3-fe09ff43b1b4,
  abstract     = {Heavy neutron-rich nuclei have been populated through the relativistic fragmentation of a Pb-208(82) beam at E/A = 1 GeV on a 2.5 g/cm(2) thick Be target. The synthesised nuclei were selected and identified in-flight using the fragment separator at GSI. Approximately 300 ns after production, the selected nuclei were implanted in an similar to 8 mm thick perspex stopper, positioned at the centre of the RISING gamma-ray detector spectrometer array. A previously unreported isomer with a half-life T-1/2 = 163(5) ns has been observed in the N = 126 closed-shell nucleus Au-205(79). Through gamma-ray singles and gamma-gamma coincidence analysis a level scheme was established. The comparison with a shell model calculation tentatively identifies the spin-parity of the excited states, including the isomer itself, which is found to be I-pi = (19/2(+)).},
  author       = {Podolyak, Zs. and Steer, S. J. and Pietri, S. and Gorska, M. and Regan, P. H. and Rudolph, Dirk and Garnsworthy, A. B. and Hoischen, Robert and Gerl, J. and Wollersheim, H. J. and Grawe, H. and Maier, K. H. and Becker, F. and Bednarczyk, P. and Caceres, L. and Doornenbal, P. and Geissel, H. and Grebosz, J. and Kelic, A. and Kojouharov, I. and Kurz, N. and Montes, F. and Prokopowicz, W. and Saito, T. and Schaffner, H. and Tashenov, S. and Heinz, A. and Kurtukian-Nieto, T. and Benzoni, G. and Pfuetzner, M. and Jungclaus, A. and Balabanski, D. L. and Brandau, C. and Brown, B. A. and Bruce, A. M. and Catford, W. N. and Cullen, I. J. and Dombradi, Zs. and Estevez, M. E. and Gelletly, W. and Ilie, G. and Jolie, J. and Jones, G. A. and Kmiecik, M. and Kondev, F. G. and Kruecken, R. and Lalkovski, S. and Liu, Z. and Maj, A. and Myalski, S. and Schwertel, S. and Shizuma, T. and Walker, P. M. and Werner-Malento, E. and Wieland, O.},
  booktitle    = {European Physical Journal A},
  issn         = {1434-6001},
  language     = {eng},
  number       = {3},
  pages        = {489--493},
  publisher    = {Springer},
  title        = {Structure of Neutron-rich Nuclei Around the N=126 Closed Shell; the Yrast Structure of 205Au up to Spin-parity I = (19/2+)},
  url          = {http://dx.doi.org/10.1140/epja/i2009-10794-5},
  volume       = {42},
  year         = {2009},
}