COLLECTIVE OBLATE BANDS IN PB-196

被引：28

作者：

HUGHES, JR

LIANG, Y

JANSSENS, RVF

KUHNERT, A

BECKER, JA

AHMAD, I

BEARDEN, IG

BRINKMAN, MJ

BURDE, J

CARPENTER, MP

CIZEWSKI, JA

DALY, PJ

DELEPLANQUE, MA

DIAMOND, RM

DRAPER, JE

DUYAR, C

FORNAL, B

GARG, U

GRABOWSKI, ZW

HENRY, EA

HENRY, RG

HESSELINK, W

KALANTARNAYESTANAKI, N

KELLY, WH

KHOO, TL

LAURITSEN, T

MAYER, RH

NISSIUS, D

OLIVEIRA, JRB

PLOMPEN, AJM

REVIOL, W

RUBEL, E

SORAMEL, F

STEPHENS, FS

STOYER, MA

VO, D

WANG, TF

机构：

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

[2] PURDUE UNIV, W LAFAYETTE, IN 47907 USA

[3] LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA

[4] RUTGERS STATE UNIV, NEW BRUNSWICK, NJ 08903 USA

[5] UNIV CALIF DAVIS, DEPT PHYS, DAVIS, CA 95616 USA

[6] UNIV NOTRE DAME, NOTRE DAME, IN 46556 USA

[7] FREE UNIV AMSTERDAM, 1081 HV AMSTERDAM, NETHERLANDS

[8] IOWA STATE UNIV SCI & TECHNOL, AMES, IA 50010 USA

来源：

PHYSICAL REVIEW C | 1993年 / 47卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.47.R1337

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：

Evidence for collective oblate behavior in 196Pb is presented. One irregular and two regular bands of M1 transitions have been observed following the Er-170(Si-30,4n) and Yb-176(Mg-26,6n) reactions. Transitions linking the most intense regular band to the low-lying negative-parity yrast levels are observed, establishing excitation energies, spins, and probable parities of the band members. In contrast, no such transitions have been found for the irregular band and the weaker regular band. The bands are interpreted as corresponding to collective oblate rotation, arising mainly from deformation-aligned high-j, shape-driving quasiproton excitations across the Z = 82 shell gap, coupled to rotation-aligned quasineutrons.

引用

页码：R1337 / R1341

页数：5

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