High-spin shell model states in neutron-rich Sn isotopes

被引：0
|
作者：
Iskra, L. W. [1 ]
Broda, R. [1 ]
Janssens, R. V. F. [2 ]
Wrzesinski, J. [1 ]
Szpak, B. [1 ]
Chiara, C. J. [2 ,3 ]
Carpenter, M. P. [2 ]
Fornal, B. [1 ]
Hoteling, N. [2 ,3 ]
Kondev, F. G. [4 ]
Krolas, W. [1 ]
Lauritsen, T. [2 ]
Pawlat, T. [1 ]
Seweryniak, D. [2 ]
Stefanescu, I. [2 ,3 ]
Walters, W. B. [3 ]
Zhu, S. [2 ]
机构：
[1] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland
[2] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[3] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA
[4] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA
来源：
11TH INTERNATIONAL SPRING SEMINAR ON NUCLEAR PHYSICS: SHELL MODEL AND NUCLEAR STRUCTURE - ACHIEVEMENTS OF THE PAST TWO DECADES | 2015年 / 580卷
关键词：
HEAVY-ION COLLISIONS; YRAST ISOMERS; NUCLEI; SUBSHELL;
D O I：
10.1088/1742-6596/580/1/012037
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
High-spin states with the seniority nu >= 2 have been investigated in the neutron-rich Sn-118,Sn-120,Sn-122,Sn-124,Sn-126 isotopes. They were produced in fusion-fission processes following Ca-48 + Pb-208, Ca-48 + U-238 reactions and via fission of target nuclei in the Ni-64 + U-238 system. By employing techniques of delayed-and cross-coincidences, it was possible to establish level schemes up to an 8 MeV excitation energy. The 13(-) and 15(-) states were identified as being isomeric and their half-lives were determined. The reduced transition probabilities extracted for isomeric transitions behave very regularly with the mass number A. The spin-parity values assigned to or suggested for the identified states were supported by shell-model calculations and by systematics.
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页数：6
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