Probing the Li-11 halo structure through beta-decay into the Be-11(*) (18 MeV) state
Artikel i vetenskaplig tidskrift, 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

Författare

M. J. G. Borge

L. Grigorenko

D. GuillemaudMueller

P. Hornshoj

F. Humbert

Björn Jonson

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

T. E. Leth

G. M. Pinedo

I. Mukha

Thomas Nilsson

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

Göran Hugo Nyman

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

K. Riisager

G. Schrieder

Martin Smedberg

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

O. Tengblad

Mikhail Zhukov

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

Nuclear Physics A

0375-9474 (ISSN)

Vol. 613 199-208

Ämneskategorier

Subatomär fysik

DOI

10.1016/S0375-9474(96)00434-4