INTRUDER STATES IN ODD ODD TL NUCLEI POPULATED IN THE ALPHA-DECAY OF ODD ODD BI ISOTOPES

被引：58

作者：

VANDUPPEN, P

DECROCK, P

DENDOOVEN, P

HUYSE, M

REUSEN, G

WAUTERS, J

机构：

[1] LISOL, Instituut voor Kern-en Stralingsfysica, K.U. Leuven, 3001 Leuven

来源：

NUCLEAR PHYSICS A | 1991年 / 529卷 / 02期

关键词：

BI-190; BI-192; BI-194; BI-196 [FROM NATRE(O-16; XN); E-LESS-THAN-180; MEV; TA-181(NE-20; E-LESS-THAN-240; W-182(NE-20; XNP); MEASURED E-ALPHA; I-ALPHA; T-1/2; E-GAMMA; I-GAMMA; ALPHA-GAMMA(T)-; ALPHA(X-RAY)(T); ALPHA(CE)T-COIN; DEDUCED T-1/2 (M AND G); ALPHA-BRANCHING RATIOS; BI-90; GAMMA-SINGLES; MEASURED E-GAMMA; TI-186; TI-188; TI-190; TI-192 DEDUCED LEVELS; J; PI; ICC; GAMMA-MULTIPOLARITY; T1/2; HYPERPURE GE; GE(LI); LEGE; PLASTIC; BAF2; SI(PIPS); DETECTORS; MASS-SEPARATED SAMPLES;

D O I：

10.1016/0375-9474(91)90796-9

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：

The alpha-decay of mass separated Bi-190,192,194,196 isotopes has been studied with the LISOL on-line separator. Time sequential alpha-singles spectra were taken and for Bi-190,192,194, alpha-Xt and alpha-gamma-t coincidences were collected. Transition probabilities of levels in Tl-186,188,190 were measured using a fast timing alpha-gamma-t and alpha-e-t coincidence set up. The alpha-decay of 196Bi and the beta-decay of 190Bi are observed for the first time. In all the Bi nuclei presently studied, unhindered alpha-decay of Bi starting from the high- (10-) and low-spin (3+) isomer populating intruder-based states in Tl was observed. The excitation energy of these intruder states is comparable with the intruder states in the neighboring odd-even and even-even nuclei.

引用

页码：268 / 288

页数：21

共 36 条

[1] SHAPE COEXISTENCE IN THE NEUTRON DEFICIENT PB ISOTOPES AND THE CONFIGURATION-CONSTRAINED SHELL CORRECTION APPROACH [J].