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Identification of a 6.6 μ s isomeric state in Ir 175

Gillespie, S. A. ; Andreyev, A. N. ; Monthery, M. Al ; Barton, C. J. ; Antalic, S. ; Auranen, K. ; Badran, H. ; Cox, D. LU ; Cubiss, J. G. and O'Donnell, D. , et al. (2019) In Physical Review C 99(6).
Abstract

An experiment has been performed to study excited states in the neutron-deficient nucleus Ir175 via the use of the JUROGAM II high-purity germanium detector array and the RITU gas-filled separator at JYFL, Jyväskylä. By using isomer tagging, an isomeric state with a half-life of 6.58(15) μs has been observed in Ir175 for the first time. It has been established that the isomer decays via a 45.2 (E1)-26.1 (M1) keV cascade to new states below the previously reported ground state in Ir175 with Iπ=(5/2-). We now reassign this (5/2-) state to the isomeric state discovered in this study.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C
volume
99
issue
6
article number
064310
publisher
American Physical Society
external identifiers
  • scopus:85067368447
ISSN
2469-9985
DOI
10.1103/PhysRevC.99.064310
language
English
LU publication?
yes
id
ddc985ea-8674-488b-a41e-7ffeac5ed1bb
date added to LUP
2022-04-04 10:53:32
date last changed
2022-04-27 21:07:13
@article{ddc985ea-8674-488b-a41e-7ffeac5ed1bb,
  abstract     = {{<p>An experiment has been performed to study excited states in the neutron-deficient nucleus Ir175 via the use of the JUROGAM II high-purity germanium detector array and the RITU gas-filled separator at JYFL, Jyväskylä. By using isomer tagging, an isomeric state with a half-life of 6.58(15) μs has been observed in Ir175 for the first time. It has been established that the isomer decays via a 45.2 (E1)-26.1 (M1) keV cascade to new states below the previously reported ground state in Ir175 with Iπ=(5/2-). We now reassign this (5/2-) state to the isomeric state discovered in this study.</p>}},
  author       = {{Gillespie, S. A. and Andreyev, A. N. and Monthery, M. Al and Barton, C. J. and Antalic, S. and Auranen, K. and Badran, H. and Cox, D. and Cubiss, J. G. and O'Donnell, D. and Grahn, T. and Greenlees, P. T. and Herzan, A. and Higgins, E. and Julin, R. and Juutinen, S. and Klimo, J. and Konki, J. and Leino, M. and Mallaburn, M. and Pakarinen, J. and Papadakis, P. and Partanen, J. and Prajapati, P. M. and Rahkila, P. and Sandzelius, M. and Scholey, C. and Sorri, J. and Stolze, S. and Urban, R. and Uusitalo, J. and Venhart, M. and Weaving, F.}},
  issn         = {{2469-9985}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C}},
  title        = {{Identification of a 6.6 μ s isomeric state in Ir 175}},
  url          = {{http://dx.doi.org/10.1103/PhysRevC.99.064310}},
  doi          = {{10.1103/PhysRevC.99.064310}},
  volume       = {{99}},
  year         = {{2019}},
}