Lifetime measurements in W 165 and the spin evolution of E 2 transition strength
Makaleler > Tam Makale · 2025
Yazarlar: T. Milanović, B. Cederwall, M. Doncel, I. Zanon, H. Li, U. Jakobsson, K. Auranen, S. Bönig, M. C. Drummond, T. Grahn, P. T. Greenlees, A. Herzáň, D. T. Joss, R. Julin, S. Juutinen, J. Konki, T. Kröll, M. Leino, C. McPeake, D. O'Donnell, R. D. Page, J. Pakarinen, J. Partanen, P. Peura, P. Rahkila, P. Ruotsalainen, M. Sandzelius, J. Sarén, B. Saygi, C. Scholey, J. Sorri, S. Stolze, M. J. Taylor, A. Thornthwaite, J. Uusitalo
Physical Review C, Uluslararası, Wos, 2025, cilt 113
DOI: 10.1103/2dtq-q465
Özet
Lifetimes of low-lying states in the yrast ν i 13 / 2 band in W 165 have been measured using the recoil distance Doppler-shift (RDDS) method. The excited states of interest were populated in the Mo 92 ( Kr 78 , 4 p 1 n ) W 165 fusion-evaporation reaction and their decays were investigated via γ rays detected in the Jurogam II detector array in coincidence with nuclei separated and detected using the RITU gas-filled separator. From the experimental lifetimes, corresponding reduced transition strengths, B ( E 2 ) values, were deduced and an unusually low experimental value of the ratio B ( E 2 ; 21 / 2 + → 17 / 2 + ) B ( E 2 ; 17 / 2 + → 13 / 2 + ) = 0.59 ( 7 ) was extracted, similar to what has been observed in neighboring nuclei in this mass region. The experimental results have been compared with Woods-Saxon-type mean field and interacting boson-approximation (IBM-1) calculations.