Structure of the weakly-bound nucleus He-6 studied via the Li-6(t,He-3)He-6 reaction

Authors
Nakamura, T Aumann, T Bazin, D Blumenfeld, Y Brown, BA Caggiano, J Clement, R Glasmacher, T Lofy, PA Navin, A Pritychenko, BV Sherrill, BM Yurkon, J
Citation
T. Nakamura et al., Structure of the weakly-bound nucleus He-6 studied via the Li-6(t,He-3)He-6 reaction, PHYS LETT B, 493(3-4), 2000, pp. 209-215
Citations number
37
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
493
Issue
3-4
Year of publication
2000
Pages
209 - 215
Database
ISI
SICI code
0370-2693(20001116)493:3-4<209:SOTWNH>2.0.ZU;2-8
Abstract
The Li-6(t, He-3)He-6 charge-exchange reaction leading to the weakly-bound nucleus He-6 has been studied at 336 MeV. Beyond the strong peaks for the k nown ground state (J(pi) = 0(+)) and first excited state (J(pi) = 2(+), E-x = 1.8 MeV), a broad asymmetric structure around E-x similar to 5 MeV has b een observed. The angular distribution of this structure exhibits the domin ance of a DeltaL = 1 transition, indicating the existence of intruder state s at low excitation energies in He-6. (C) 2000 Elsevier Science B.V. All ri ghts reserved.