alpha-decay properties of Po-190 and the identification of Po-191

被引：25

作者：

Batchelder, JC

Toth, KS

Bingham, CR

Brown, LT

Conticchio, LF

Davids, CN

Seweryniak, D

Wauters, J

Wood, JL

Zganjar, EF

机构：

[1] LOUISIANA STATE UNIV, BATON ROUGE, LA 70803 USA

[2] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

[3] UNIV TENNESSEE, KNOXVILLE, TN 37996 USA

[4] ARGONNE NATL LAB, ARGONNE, IL 60439 USA

[5] VANDERBILT UNIV, NASHVILLE, TN 37235 USA

[6] UNIV MARYLAND, COLLEGE PK, MD 20742 USA

[7] GEORGIA INST TECHNOL, ATLANTA, GA 30332 USA

来源：

PHYSICAL REVIEW C | 1997年 / 55卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.55.R2142

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The cy-decay properties of Po-190 were investigated through the use of a fragment mass analyzer in conjunction with a double-sided Si strip detector. The isotope was produced via the Mo-96(Mo-96,2n) reaction, and its alpha-decay energy and T-1/2 were measured as 7529(10) keV and 2.4(-0.3)(+0.4) ms, respectively. The resulting reduced width is nearly identical to that of the Po-192.194 isotopes. This is believed to result from significant mixing between the ground state pi(2p) and the low-lying O(+)pi(4p-2h) intruder state in the Po parent. The result provides further evidence for shape coexistence in the light Po isotopes. In addition, Po-191 was unambiguously identified, and the Pb-186 alpha-decay branch was determined experimentally for the first time.

引用

页码：R2142 / R2145

页数：4

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