SHAPE COEXISTENCE AND DISAPPEARANCE OF PAIRING CORRELATIONS IN SR-82

被引：32

作者：

BAKTASH, C

GARCIABERMUDEZ, G

SARANTITES, DG

NAZAREWICZ, W

ABENANTE, V

BEENE, JR

GRIFFIN, HC

HALBERT, ML

HENSLEY, DC

JOHNSON, NR

LEE, IY

MCGOWAN, FK

RILEY, MA

STRACENER, DW

SEMKOW, TM

VIRTANEN, A

机构：

[1] JOINT INST HEAVY ION RES,OAK RIDGE,TN 37831

[2] UNIV LIVERPOOL,OLIVER LODGE LAB,LIVERPOOL L69 3BZ,ENGLAND

[3] WASHINGTON UNIV,DEPT CHEM,ST LOUIS,MO 63130

[4] UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109

[5] COMIS NACL ENERGIA ATOM,RA-1429 BUENOS AIRES,ARGENTINA

来源：

PHYSICS LETTERS B | 1991年 / 255卷 / 02期

关键词：

D O I：

10.1016/0370-2693(91)90232-F

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Extensive high-spin band structures in Sr-82 have been established using proton-gamma-gamma coincidence techniques. On the basis of the Woods-Saxon cranking calculations with pairing, four of these bands are interpreted to have prolate, oblate, or triaxial shapes. Pairing correlations are predicted to be very weak at high spins in this nucleus, and calculations with no static pairing successfully reproduce the experimentally observed crossing frequencies and alignments despite the fact that none of the bands displays a rigid-rotor behavior. It is concluded that observation of rigid-rotor behavior is neither necessary nor sufficient for the disappearance of static pairing in nuclei.

引用

页码：174 / 179

页数：6

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