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Isomeric decays in neutron-rich W, Os and Pt nuclei

Podolyak, Z; Caamano, M; Regan, PH; Walker, PM; Mayet, P; Gerl, J; Schlegel, C; Hellstrom, M; Mineva, Milena LU and Pfutzner, M (2002) In Progress of Theoretical Physics. Supplement p.467-472
Abstract
Relativistic energy fragmentation of a 1 GeV/nucleon Pb-208 beam was used to populate a wide range of nuclei on both sides of the valley of beta-stability. The structure of these nuclei was studied by the identification of discrete gamma-ray transitions depopulating isomeric states with lifetimes in the nano- to millisecond range. Highlights of the experiment include the first observation of gamma-ray transitions in the neutron-rich nuclei (188)TA, W-190, Re-192, Os-195, Ir-197,Ir-198, Pt-201,Pt-202. The yrast states in W-190 and Pt-202 as well as the decay out from 10-20 ns isomers in Pt-202,Pt-201 and Os-195 are discussed. The observation of the previously reported isomeric K = 35/2 states in Hf-175, W-179 and Re-181 represents the... (More)
Relativistic energy fragmentation of a 1 GeV/nucleon Pb-208 beam was used to populate a wide range of nuclei on both sides of the valley of beta-stability. The structure of these nuclei was studied by the identification of discrete gamma-ray transitions depopulating isomeric states with lifetimes in the nano- to millisecond range. Highlights of the experiment include the first observation of gamma-ray transitions in the neutron-rich nuclei (188)TA, W-190, Re-192, Os-195, Ir-197,Ir-198, Pt-201,Pt-202. The yrast states in W-190 and Pt-202 as well as the decay out from 10-20 ns isomers in Pt-202,Pt-201 and Os-195 are discussed. The observation of the previously reported isomeric K = 35/2 states in Hf-175, W-179 and Re-181 represents the highest discrete spin states observed to date following a projectile fragmentation reaction. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Progress of Theoretical Physics. Supplement
issue
146
pages
467 - 472
publisher
Progress of Theoretical Physics
external identifiers
  • wos:000180190000059
  • scopus:0036993831
ISSN
0375-9687
language
English
LU publication?
yes
id
d6ff5781-6889-495c-b928-7a7872a065a6 (old id 320108)
alternative location
http://ptp.ipap.jp/link?PTPS/146/467/
date added to LUP
2007-11-09 08:09:51
date last changed
2017-06-04 04:28:57
@article{d6ff5781-6889-495c-b928-7a7872a065a6,
  abstract     = {Relativistic energy fragmentation of a 1 GeV/nucleon Pb-208 beam was used to populate a wide range of nuclei on both sides of the valley of beta-stability. The structure of these nuclei was studied by the identification of discrete gamma-ray transitions depopulating isomeric states with lifetimes in the nano- to millisecond range. Highlights of the experiment include the first observation of gamma-ray transitions in the neutron-rich nuclei (188)TA, W-190, Re-192, Os-195, Ir-197,Ir-198, Pt-201,Pt-202. The yrast states in W-190 and Pt-202 as well as the decay out from 10-20 ns isomers in Pt-202,Pt-201 and Os-195 are discussed. The observation of the previously reported isomeric K = 35/2 states in Hf-175, W-179 and Re-181 represents the highest discrete spin states observed to date following a projectile fragmentation reaction.},
  author       = {Podolyak, Z and Caamano, M and Regan, PH and Walker, PM and Mayet, P and Gerl, J and Schlegel, C and Hellstrom, M and Mineva, Milena and Pfutzner, M},
  issn         = {0375-9687},
  language     = {eng},
  number       = {146},
  pages        = {467--472},
  publisher    = {Progress of Theoretical Physics},
  series       = {Progress of Theoretical Physics. Supplement},
  title        = {Isomeric decays in neutron-rich W, Os and Pt nuclei},
  year         = {2002},
}