Isomeric states in 165W and 169W
Journal article, 2026
Properties of isomeric states and the deexcitation paths to the ground state have been observed in 165W and 169W nuclei in experiments employing fusion-evaporation reactions at the Accelerator Laboratory of the University of Jyv & auml;skyl & auml;, Finland. The (13/2+) isomeric state in 165W was measured to have a half-life of 7.4(2) & micro;s and an excitation energy of 301.4(3) keV, while in 169W, the J pi= (9/2+) isomeric state at 127.2(3) keV has t1/2 = 7.4(5) & micro;s. The observed hindrance factors are 6.9(2) for the M2 deexciting transition in 165W and 2.29(15) & times; 106 for the E1 deexciting transition in 169W, of which the former is a typical value in this region, while the latter is an order of magnitude larger than most other similar cases. The excited-and ground-state spin assignments are discussed.
Author
Henna Joukainen
Subatomic, High Energy and Plasma Physics 1
J. Saren
University of Jyväskylä
J. Uusitalo
University of Liverpool
University of Jyväskylä
A. D. Briscoe
University of Liverpool
D. T. Joss
University of Liverpool
R. D. Page
University of Liverpool
C. M. Sullivan
University of Liverpool
A. McCarter
University of Liverpool
University of Groningen
E. S. Paul
University of Liverpool
P. A. Aden
University of Jyväskylä
A. Astier
University Paris-Saclay
K. Auranen
University of Jyväskylä
V. Bogdanoff
University of Jyväskylä
J. Chadderton
University of Liverpool
T. Grahn
University of Jyväskylä
P. T. Greenlees
University of Jyväskylä
A. Illana
Complutense University
University of Jyväskylä
P. M. Jodidar
University Paris-Saclay
R. Julin
University of Jyväskylä
H. Jutila
University of Jyväskylä
H. Kokkonen
University of Jyväskylä
M. Leino
University of Jyväskylä
J. Louko
University of Jyväskylä
M. Luoma
University of Jyväskylä
J. Ojala
University of Jyväskylä
J. Pakarinen
University of Jyväskylä
C. M. Petrache
Chinese Academy of Sciences
University Paris-Saclay
A. M. Plaza
University of Jyväskylä
University of Liverpool
P. Rahkila
University of Jyväskylä
P. Ruotsalainen
University of Jyväskylä
A. Tolosa-Delgado
CERN
University of Jyväskylä
E. Uusikyla
University of Jyväskylä
G. L. Zimba
University of Jyväskylä
Louisiana State University
PHYSICAL REVIEW C
2469-9985 (ISSN) 2469-9993 (eISSN)
Vol. 114 2 024320Subject Categories (SSIF 2025)
Subatomic Physics
DOI
10.1103/mxx4-sxv2