The shears mechanism in the lead isotopes

被引：47

作者：

Clark, RM ^{[1
]}

Kruchen, R

Asztalos, SJ

Becker, JA

Busse, B

Chmel, S

Deleplanque, MA

Diamond, RM

Fallon, P

Jenkins, D

Hauschild, K

Hibbert, IM

Hubel, H

Lee, IY

Macchiavelli, AO

MacLeod, RW

Schmid, G

Stephens, FS

van Severen, UJ

Vetter, K

Wadsworth, R

Wan, S

机构：

[1] Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[3] Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[4] Univ York, Dept Phys, York YO1 5DD, N Yorkshire, England

[5] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

来源：

PHYSICS LETTERS B | 1998年 / 440卷 / 3-4期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/S0370-2693(98)01179-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Lifetimes of states in at least one of the M1 bands in each nucleus from Pb193-197 have been determined through Doppler-Shift Attenuation Method experiments performed with the Gammasphere array. The nuclei were populated under similar conditions allowing accurate relative measurements of the state lifetimes. The deduced B(M1) values display the characteristic decrease with increasing angular momentum which is a clear signature of the shears mechanism. Combined with the recent results for Pb-198,Pb-199 an impressive body of evidence now exists which supports the interpretation of these structures as examples of a new mode of nuclear behavior: 'magnetic rotation'. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：251 / 256

页数：6

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