SIGNATURE INVERSION IN CS-120 - EVIDENCE FOR A RESIDUAL PN INTERACTION

被引：59

作者：

CEDERWALL, B

LIDEN, F

JOHNSON, A

HILDINGSSON, L

WYSS, R

FANT, B

JUUTINEN, S

AHONEN, P

MITARAI, S

MUKAI, J

NYBERG, J

RAGNARSSON, I

SEMMES, PB

机构：

[1] ROYAL INST TECHNOL,DEPT PHYS 1,S-10044 STOCKHOLM 70,SWEDEN

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

[3] UNIV HELSINKI,DEPT PHYS,SF-00100 HELSINKI 10,FINLAND

[4] UNIV JYVASKYLA,DEPT PHYS,SF-40100 JYVASKYLA,FINLAND

[5] KYUSHU UNIV,DEPT PHYS,FUKUOKA 812,JAPAN

[6] NIELS BOHR INST,TANDEM ACCELERATOR LAB,DK-4000 ROSKILDE,DENMARK

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

来源：

NUCLEAR PHYSICS A | 1992年 / 542卷 / 03期

关键词：

92MO(32S; 3PN); E = 145 MEV; MEASURED E-GAMMA; I-GAMMA; SIGMA(E-GAMMA; THETA); PARTICLE-GAMMA-GAMMA COINCIDENCES; 120CS DEDUCED LEVELS; J; PI; EXPERIMENTAL ROUTHIANS AND ALIGNED ANGULAR MOMENTA; ENRICHED TARGETS; ARRAY OF COMPTON SUPPRESSED HP GE DETECTORS; ARRAY OF NEUTRON DETECTORS; 4-PI ARRAY OF SI CHARGED PARTICLE DETECTORS; TOTAL ROUTHIAN SURFACE CALCULATIONS; 2-PARTICLE PLUS TRIAXIAL ROTOR CALCULATIONS;

D O I：

10.1016/0375-9474(92)90106-T

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：

High-spin states have been observed in the odd-odd isotope 120Cs in S-32-induced reactions. The previously known band is extended to higher spin and several new bands are identified. Band-head configurations have been inferred by comparing the band properties with known bands in the odd nuclei 121Cs and 121Ba. A remarkable signature inversion is observed in the pi-h11/2 x nu-h11/2 band. The experimental data are compared with calculations made within the total routhian surface model and the two-particle plus triaxial rotor model. It is concluded that a significant residual pn interaction rather than triaxiality is responsible for the signature inversion phenomenon in the pi-h11/2 x nu-h11/2 band of 120Cs.(~)[GRAPHICS]

引用

页码：454 / 478

页数：25

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