HIGH-SENIORITY EXCITATIONS IN EVEN NEUTRON-RICH Sn ISOTOPES POPULATED IN FUSION-FISSION REACTIONS

被引：6
|
作者：
Iskra, L. W. [1 ]
Broda, R. [1 ]
Wrzesinski, J. [1 ]
Carpenter, M. P. [2 ]
Chiara, C. J. [2 ,3 ]
Fornal, B. [1 ]
Hoteling, N. [2 ,3 ]
Janssens, R. V. F. [2 ]
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] Henryk Niewodniczanski Inst Nucl Phys PAN, 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：
ACTA PHYSICA POLONICA B | 2013年 / 44卷 / 03期
关键词：
YRAST ISOMERS;
D O I：
10.5506/APhysPolB.44.395
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
High-seniority excitations above the 10(+) and 27/2(-) isomeric states were investigated with gamma coincidence techniques in neutron-rich Sn isotopes produced in fission processes following Ca-48+Pb-208, Ca-48+U-238 and Ni-64+U-238 reactions. In the data analysis, the delayed gamma coincidence technique was used to establish high-spin state structures in all Sn isotopes with isomeric half-lives below 10 mu sec. For cases with long-lived isomeric states, the gamma cross-coincidence method was employed to identify such structures. The relevant features of the fusion-fission process were investigated to enable these identifications. The discussion of some details of these analyses is followed by two examples of the results obtained: the Sn-124 level scheme and the level energy systematics for selected states established in even Sn isotopes. DOI:10.5506/APhysPolB.44.395
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页码：395 / 401
页数：7
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