NEUTRON DECAY OF THE ISOBARIC ANALOG STATE IN BI-209

被引：6

作者：

BORDEWIJK, JA

BALANDA, A

BEAUMEL, D

BLOMGREN, J

BRANDENBURG, S

VANTHOF, G

HARAKEH, MN

HOFSTEE, MA

JANECKE, J

KRASZNAHORKAY, A

LAURENT, H

NILSSON, L

OLSSON, N

PERRINO, R

SIEBELINK, R

SODERMAN, PO

VANDERWERF, SY

VANDERWOUDE, A

机构：

[1] UNIV UPPSALA,DEPT RADIAT SCI,S-75121 UPPSALA,SWEDEN

[2] FREE UNIV AMSTERDAM,FAC NAT KUNDE STERRENKUNDE,1081 HV AMSTERDAM,NETHERLANDS

[3] UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109

[4] HUNGARIAN ACAD SCI,INST NUCL RES,H-4001 DEBRECEN,HUNGARY

[5] UNIV UPPSALA,SVEDBERG LAB,S-75121 UPPSALA,SWEDEN

[6] INFN,I-73100 LECCE,ITALY

[7] UNIV UPPSALA,DEPT NEUTRON RES,S-75121 UPPSALA,SWEDEN

[8] INST KERN STRALINGSFYS,LOUVAIN,BELGIUM

[9] INST PHYS NUCL LYON,F-91406 ORSAY,FRANCE

[10] JAGIELLONIAN UNIV,PL-31007 KRAKOW,POLAND

[11] UNIV LECCE,DIPARTIMENTO FIS,I-73100 LECCE,ITALY

来源：

NUCLEAR PHYSICS A | 1994年 / 574卷 / 03期

关键词：

PB-208(HE-3; T)BI-208; E = 61.2 MEV; MAGNETIC SPECTROGRAPH; NEUTRON TIME-OF-FLIGHT MULTIDETECTOR; MEASURED NEUTRON DECAY; DEDUCED NEUTRON SPECTRUM FROM IAS DECAY AND BRANCHING RATIO; STATISTICAL-DECAY CALCULATIONS; ISOSPIN IMPURITY;

D O I：

10.1016/0375-9474(94)90239-9

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 isospin-forbidden neutron decay of the isobaric analog state in Bi-208 has been measured, following its excitation via the Pb-208(He-3, t)Bi-208 reaction at 61.2 MeV. In contrast to the proton decay, which is direct, the neutron decay spectrum has a statistical shape. Its branching ratio is determined to be (37 +/- 3)%. The results suggest that the damping of the isospin impurity is fast. Therefore, neutron decay results mostly from the final stage of the damping process and does not contribute to the width of the IAS.

引用

页码：453 / 466

页数：14

共 23 条

[1] THE CONTINUUM PART OF (HE-3, T) SPECTRA AT EHE-3 =52 MEV [J].