Population and decay of a
= 8
two-quasineutron isomer in
Pu
Puにおける
= 8
二準中性子アイソマーの生成と崩壊
Hota, S.*; Tandel, S.*; Chowdhury, P.*; Ahmad, I.*; Carpenter, M. P.*; Chiara, C. J.*; Greene, J. P.*; Hoffman, C. R.*; Jackson, E. G.*; Janssens, R. V. F.*; Kay, B. P.*; Khoo, T. L.*; Kondev, F. G.*; Lakshmi, S.*; Lalkovski, S.*; Lauritsen, T.*; Lister, C. J.*; McCutchan, E. A.*; Moran, K.*; Peterson, D.*; Shirwadkar, U.*; Seweryniak, D.*; Stefanescu, I.*; 藤 暢輔
; Zhu, S.*
Hota, S.*; Tandel, S.*; Chowdhury, P.*; Ahmad, I.*; Carpenter, M. P.*; Chiara, C. J.*; Greene, J. P.*; Hoffman, C. R.*; Jackson, E. G.*; Janssens, R. V. F.*; Kay, B. P.*; Khoo, T. L.*; Kondev, F. G.*; Lakshmi, S.*; Lalkovski, S.*; Lauritsen, T.*; Lister, C. J.*; McCutchan, E. A.*; Moran, K.*; Peterson, D.*; Shirwadkar, U.*; Seweryniak, D.*; Stefanescu, I.*; Toh, Yosuke; Zhu, S.*
Puにおける
= 8
アイソマーからの崩壊と集団的バンド構造が
Tiと
Pbのビームによる深部非弾性散乱実験によって調べられた。バンド内の正確な
分岐比の測定によって、偶
,
=150アイソトーンにおける
= 8
二準中性子アイソマーが9/2
[734]
7/2
[624]
の配位であることを確かめた。
=152における変形シェルギャップ近傍のこれらのアイソマーは、超重核の一粒子エネルギーの理論的な予言において重要なベンチマークとなる。
The decay of a
= 8
isomer in
Pu and the collective band structure populating the isomer are studied using deep inelastic excitations with
Ti and
Pb beams, respectively. Precise measurements of
branching ratios in the band confirm a clean 9/2
[734]
7/2
[624]
for the isomer, validating the systematics of K
= 8
two-quasineutron isomers observed in even-
,
= 150 isotones. These isomers around the deformed shell gap at
= 152 provide critical benchmarks for theoretical predictions of single-particle energies in this gateway region to superheavy nuclei.