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Isomeric States in Neutron-deficient A~80-90 Nuclei Populated in the Fragmentation of 107Ag

Garnsworthy, A. B.; Regan, P. H.; Pietri, S.; Sun, Y.; Xu, F. R.; Rudolph, Dirk LU ; Gorska, M.; Caceres, L.; Podolyak, Zs. and Steer, S. J., et al. (2009) In Physical Review C (Nuclear Physics) 80(6).
Abstract
The relativistic projectile fragmentation of a 750 MeV per nucleon beam of Ag-107 was used to populate isomeric states in neutron-deficient nuclei around A=80-90. Reaction products were separated and unambiguously identified using the GSI FRagment Separator (FRS) and its ancillary detectors. At the final focal plane, the fragments were slowed from relativistic energies by means of an aluminium degrader and implanted in a passive stopper in the center of the high-efficiency, high-granularity Stopped Rare Isotope Spectroscopic INvestigation at GSI (RISING) germanium array. This allowed the identification of excited states in the N=Z nuclei Tc-86(43) and, for the first time, Nb-82(41). Isomeric states have also been identified for the first... (More)
The relativistic projectile fragmentation of a 750 MeV per nucleon beam of Ag-107 was used to populate isomeric states in neutron-deficient nuclei around A=80-90. Reaction products were separated and unambiguously identified using the GSI FRagment Separator (FRS) and its ancillary detectors. At the final focal plane, the fragments were slowed from relativistic energies by means of an aluminium degrader and implanted in a passive stopper in the center of the high-efficiency, high-granularity Stopped Rare Isotope Spectroscopic INvestigation at GSI (RISING) germanium array. This allowed the identification of excited states in the N=Z nuclei Tc-86(43) and, for the first time, Nb-82(41). Isomeric states have also been identified for the first time in Tc-87,Tc-88, and a previously unreported isomer was observed in Nb-84. Experimental results are presented along with a discussion on the structure of these nuclei based on interpretations provided by several theoretical models. (Less)
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@article{b63662a8-ee00-46ef-a8a0-4288efc0f4ad,
  abstract     = {The relativistic projectile fragmentation of a 750 MeV per nucleon beam of Ag-107 was used to populate isomeric states in neutron-deficient nuclei around A=80-90. Reaction products were separated and unambiguously identified using the GSI FRagment Separator (FRS) and its ancillary detectors. At the final focal plane, the fragments were slowed from relativistic energies by means of an aluminium degrader and implanted in a passive stopper in the center of the high-efficiency, high-granularity Stopped Rare Isotope Spectroscopic INvestigation at GSI (RISING) germanium array. This allowed the identification of excited states in the N=Z nuclei Tc-86(43) and, for the first time, Nb-82(41). Isomeric states have also been identified for the first time in Tc-87,Tc-88, and a previously unreported isomer was observed in Nb-84. Experimental results are presented along with a discussion on the structure of these nuclei based on interpretations provided by several theoretical models.},
  articleno    = {064303},
  author       = {Garnsworthy, A. B. and Regan, P. H. and Pietri, S. and Sun, Y. and Xu, F. R. and Rudolph, Dirk and Gorska, M. and Caceres, L. and Podolyak, Zs. and Steer, S. J. and Hoischen, Robert and Heinz, A. and Becker, F. and Bednarczyk, P. and Doornenbal, P. and Geissel, H. and Gerl, J. and Grawe, H. and Grebosz, J. and Kelic, A. and Kojouharov, I. and Kurz, N. and Montes, F. and Prokopwicz, W. and Saito, T. and Schaffner, H. and Tachenov, S. and Werner-Malento, E. and Wollersheim, H. J. and Benzoni, G. and Blank, B. and Brandau, C. and Bruce, A. M. and Camera, F. and Catford, W. N. and Cullen, I. J. and Dombradi, Zs. and Estevez, E. and Gelletly, W. and Ilie, G. and Jolie, J. and Jones, G. A. and Jungclaus, A. and Kmiecik, M. and Kondev, F. G. and Kurtukian-Nieto, T. and Lalkovski, S. and Liu, Z. and Maj, A. and Myalski, S. and Pfuetzner, M. and Schwertel, S. and Shizuma, T. and Simons, A. J. and Walker, P. M. and Wieland, O.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Isomeric States in Neutron-deficient A~80-90 Nuclei Populated in the Fragmentation of 107Ag},
  url          = {http://dx.doi.org/10.1103/PhysRevC.80.064303},
  volume       = {80},
  year         = {2009},
}