STUDY OF HIGH-SPIN STATES IN THE NUCLEUS EU-149

被引：16
作者：
URBAN, W
BACELAR, JC
JONGMAN, JR
NOORMAN, RF
DEVOIGT, MJA
NYBERG, J
SLETTEN, G
BERGSTROM, M
RYDE, H
机构：
[1] KERNFYS VERSNELLER INST,9747 AA GRONINGEN,NETHERLANDS
[2] NIELS BOHR INST,DK-4000 ROSKILDE,DENMARK
[3] LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN
来源：
NUCLEAR PHYSICS A | 1994年 / 578卷 / 1-2期
关键词：
LA-139(C-13C; 3N); E=58 MEV; MEASURED E-GAMMA; I-GAMMA; GAMMA-GAMMA(T); DCO RATIOS; GAMMA LINEAR POLARIZATION; SIGMA (E-GAMMA); EU-149 DEDUCED LEVELS; J; PI; GAMMA-MULTIPOLARITY NORDBALL MULTI-GE DETECTOR ARRAY; BAF2 MULTIPLICITY FILTER;
D O I：
10.1016/0375-9474(94)90976-8
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：
In-beam studies of high-spin states in Eu-149 are reported. The level scheme extends up to an excitation energy of 7.1 MeV and a spin of 55/2HBAR. This nucleus is weakly deformed and most of the high-spin structure is interpreted through its multi-particle-hole nature. Octupole-phonon vibrations coupled to multi-particle-hole states are observed and discussed. In contrast with the Z less-than-or-equal-to 62 isotones, there is no conclusive evidence in Eu-149 for octupole deformation induced by rotation.
引用
收藏
页码：204 / 224
页数：21
相关论文
共 39 条
[1]  
ADAM I, 1968, NUCL PHYS A, VA106, P275
[2]   RELATION BETWEEN THE Z = 64 SHELL CLOSURE AND THE ONSET OF DEFORMATION AT N = 88-90 [J].
CASTEN, RF ;
WARNER, DD ;
BRENNER, DS ;
GILL, RL .
PHYSICAL REVIEW LETTERS, 1981, 47 (20) :1433-1436
[3]  
CURIENT D, 1988, CRNPN8817 U L PAST S
[4]  
Durell J. L., 1989, I PHYS C SER, V105, P307
[5]   EXPERIMENTAL STUDIES OF NEUTRON-DEFICIENT GADOLINIUM ISOTOPES .1. ELECTRON-CAPTURE DECAY OF GD-149 [J].
EPPLEY, RE ;
MCHARRIS, WC ;
KELLY, WH .
PHYSICAL REVIEW C, 1970, 2 (03) :1077-+
[6]   BAND-STRUCTURE IN EU-147, EU-149, EU-151 OBSERVED VIA (HI,XN) REACTIONS [J].
FLEISSNER, JG ;
FUNK, EG ;
VENEZIA, FP ;
MIHELICH, JW .
PHYSICAL REVIEW C, 1977, 16 (01) :227-238
[7]  
HERSKIND B, 1985, 2 P INT C NUCL NUCL
[8]  
JONGMAN JR, IN PRESS NUCL PHYS A
[9]  
JONGMAN JR, UNPUB NUCL PHYS A
[10]  
JONGMAN JR, 1992, THESIS U GRONINGEN
1234