Probing the Li-11 halo structure through beta-decay into the Be-11(*) (18 MeV) state
Journal article, 1997
An experimental study of beta-delayed charged particles (H, He, Be) from Li-11 shows a beta-feeding to an excited state at 18.15(15) MeV in Be-11 with a large Gamow-Teller strength, B-GT greater than or equal to 1.6. Branching ratios and reduced widths of 2-, 3- and 5- particle decay channels of this state are extracted, A strong suppression of the neutron branch from the 18 MeV state to the Be-10(g.s.) is observed, We suggest that the measured partial width may be sensitive to the (p(1/2))(2) component in the Li-11 halo, A rough estimate indicates that the (p(1/2))(2) component is not the dominant one in the halo wave-function.
RADIOACTIVITY Li-11(beta(-))
He
DEUTERON
Delta E-E
[Ta+p] reaction
Be spectra
telescope
branching ratios
deduced Garnow-Teller strength and
measured beta-delayed H
on-line mass separation
energy level at 18.15 MeV in Be-11
BE-11
Author
M. J. G. Borge
L. Grigorenko
D. GuillemaudMueller
P. Hornshoj
F. Humbert
Björn Jonson
Chalmers, Department of Experimental Physics, Subatomic Physics
T. E. Leth
G. M. Pinedo
I. Mukha
Thomas Nilsson
Chalmers, Department of Experimental Physics, Subatomic Physics
Göran Hugo Nyman
Chalmers, Department of Experimental Physics, Subatomic Physics
K. Riisager
G. Schrieder
Martin Smedberg
Chalmers, Department of Experimental Physics, Subatomic Physics
O. Tengblad
Mikhail Zhukov
Chalmers, Department of Experimental Physics, Subatomic Physics
Published in
Nuclear Physics A
0375-9474 (ISSN)
Vol. 613 Issue 3 p. 199-208Categorizing
Subject Categories (SSIF 2011)
Subatomic Physics
Identifiers
DOI
10.1016/S0375-9474(96)00434-4