Advanced

Observation of a New High-spin Isomer in 94Pd

Brock, T. S.; Singh, B. S. Nara; Boutachkov, P.; Braun, N.; Blazhev, A.; Liu, Z.; Wadsworth, R.; Gorska, M.; Grawe, H. and Pietri, S., et al. (2010) In Physical Review C (Nuclear Physics) 82(6).
Abstract
A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and... (More)
A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and reveals the importance of such orbits for understanding the decay properties of high-spin isomers in this region. However, despite the need for the extended model space for the E3 decay, the dominant configuration for the 19(-) state remains (p p(1/2)(-1)g(9/2)(-3))(11)circle times(nu g(9/2)(-2))(8). The half-life of the known, 14(+), isomer was remeasured and yielded a value of 499(13) ns. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
82
issue
6
publisher
American Physical Society
external identifiers
  • wos:000286745100002
  • scopus:79251627334
ISSN
0556-2813
DOI
10.1103/PhysRevC.82.061309
language
English
LU publication?
yes
id
8a1522fa-dfc5-41b7-a82a-9d2eae149aff (old id 1859708)
date added to LUP
2011-04-20 08:59:07
date last changed
2018-06-17 04:07:29
@article{8a1522fa-dfc5-41b7-a82a-9d2eae149aff,
  abstract     = {A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and reveals the importance of such orbits for understanding the decay properties of high-spin isomers in this region. However, despite the need for the extended model space for the E3 decay, the dominant configuration for the 19(-) state remains (p p(1/2)(-1)g(9/2)(-3))(11)circle times(nu g(9/2)(-2))(8). The half-life of the known, 14(+), isomer was remeasured and yielded a value of 499(13) ns.},
  articleno    = {061309(R)},
  author       = {Brock, T. S. and Singh, B. S. Nara and Boutachkov, P. and Braun, N. and Blazhev, A. and Liu, Z. and Wadsworth, R. and Gorska, M. and Grawe, H. and Pietri, S. and Domingo-Pardo, C. and Rudolph, Dirk and Steer, S. J. and Atac, A. and Bettermann, L. and Caceres, L. and Engert, T. and Eppinger, K. and Faestermann, T. and Farinon, F. and Finke, F. and Geibel, K. and Gerl, J. and Gernhaeuser, R. and Goel, N. and Gottardo, A. and Grebosz, J. and Hinke, C. and Hoischen, Robert and Ilie, G. and Iwasaki, H. and Jolie, J. and Kaskas, A. and Kojuharov, I. and Kruecken, R. and Kurz, N. and Merchan, E. and Nociforo, C. and Nyberg, J. and Pfuetzner, M. and Prochazka, A. and Podolyak, Zs and Regan, P. H. and Reiter, P. and Rinta-Antila, S. and Schaffner, H. and Scholl, C. and Soderstrom, P. -A. and Warr, N. and Weick, H. and Wollersheim, H. -J. and Woods, P. J.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Observation of a New High-spin Isomer in 94Pd},
  url          = {http://dx.doi.org/10.1103/PhysRevC.82.061309},
  volume       = {82},
  year         = {2010},
}