Coulomb dissociation of C-19 and its halo structure

Citation
T. Nakamura et al., Coulomb dissociation of C-19 and its halo structure, PHYS REV L, 83(6), 1999, pp. 1112-1115
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
83
Issue
6
Year of publication
1999
Pages
1112 - 1115
Database
ISI
SICI code
0031-9007(19990809)83:6<1112:CDOCAI>2.0.ZU;2-Z
Abstract
The extremely neutron-rich nucleus C-19 has been studied by Coulomb dissoci ation into C-18 + n at 67 A MeV. A large E1 strength of 0.71 +/- 0.07 e(2) fm(2) has been observed at low excitation energies. An analysis of the angu lar distribution of C-18 + n Center Of mass has led to a determination of t he neutron separation energy of C-19 to be 530 +/- 130 keV. The El strength distribution can be well reproduced for a C-19 ground state structure with a dominant s-wave valence neutron, providing a consistent picture of the n eutron halo structure of C-19.