NEUTRON EXCITATIONS ACROSS THE N = 86 SUPERDEFORMED SHELL GAP

被引：25

作者：

DEFRANCE, G

HAAS, B

RAGNARSSON, I

TWIN, PJ

BEAUSANG, CW

BECK, FA

BYRSKI, T

CLARKE, S

CURIEN, D

DAGNALL, PJ

DUCHENE, G

FALLON, P

FLIBOTTE, S

FORBES, S

FORSYTH, PD

KHARRAJA, B

LISLE, JC

MERDINGER, JC

PETRACHE, CM

PREVOST, D

SHARPEYSCHAFER, JF

SIMPSON, J

VIVIEN, JP

ZUBER, K

机构：

[1] LUND INST TECHNOL,DEPT MATH PHYS,S-22100 LUND,SWEDEN

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

[3] LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720

[4] MCMASTER UNIV,DEPT PHYS & ASTRON,HAMILTON L8S 4M1,ONTARIO,CANADA

[5] ATOM ENERGY CANADA LTD RES,CHALK RIVER LABS,CHALK RIVER K0J 1J0,ON,CANADA

[6] UNIV MANCHESTER,SCHUSTER LAB,MANCHESTER M13 9PL,LANCS,ENGLAND

[7] SERC,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND

[8] INST NUCL PHYS,PL-31342 KRAKOW,POLAND

来源：

PHYSICS LETTERS B | 1994年 / 331卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)91054-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on data obtained with the Eurogam spectrometer, a systematic investigation of superdeformed bands built on single neutron excitations across the N = 86 shell gap has been carried out for gadolinium, terbium, and dysprosium isotopes with 85 less-than-or-equal-to N less-than-or-equal-to 87. In each nucleus, pairs of bands corresponding to degenerate signature partners have been observed. The effective alignment is constant and close to zero for many of the bands, in agreement with cranked shell model calculations for the [402]5/2 and [514]9/2 orbitals. Several bands exhibit non-zero alignments, indicating in some cases the influence of pairing correlations even at high spin and in other cases the occupancy of the [521]3/2 orbital.

引用

页码：290 / 295

页数：6

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