Large asymmetry in the strongest beta-transition for A=9
Artikel i vetenskaplig tidskrift, 2003

A new measurement of the beta-decay of Li-9 has clarified the feeding to the highest accessible states in Be-9. It is found that the P-decay mainly populates the 11.8 MeV state, whose spin is determined as 5/2(-). The extracted B-GT value of 5.3(0.9) is a factor 4.4(1.0) larger than that of the mirror transition from C-9. A theoretical explanation of such a pronounced beta-decay asymmetry is presently lacking. (C) 2003 Elsevier B.V. All rights reserved.

measured beta-delayed E-alpha

HE-8

asymmetry

Li-9(beta(-)[from UC(p

A=9 beta-decay

alpha-coinc

alpha

LI-9

NUCLEAR

DECAY

X)])

Be-9 deduced beta-branching strengths

Författare

Y. Prezado

U. C. Bergmann

M. J. G. Borge

J. Cederkall

C. A. Diget

L. M. Fraile

H. O. U. Fynbo

H. B. Jeppesen

Björn Jonson

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

Göran Hugo Nyman

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

K. Riisager

O. Tengblad

L. Weissmann

Katarina Wilhelmsen Rolander

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

0370-2693 (ISSN)

Vol. 576 1-2 55-61

Ämneskategorier

Subatomär fysik

DOI

10.1016/j.physletb.2003.09.073