Low energy dipole strength in light drip line nuclei - art. no. 034310

Citation
H. Sagawa et al., Low energy dipole strength in light drip line nuclei - art. no. 034310, PHYS REV C, 6303(3), 2001, pp. 4310
Citations number
44
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C
ISSN journal
0556-2813 → ACNP
Volume
6303
Issue
3
Year of publication
2001
Database
ISI
SICI code
0556-2813(200103)6303:3<4310:LEDSIL>2.0.ZU;2-W
Abstract
We have studied electric dipole (E1) strength distribution in neutron and p roton drip line nuclei Be-12(4)8, Be-14(4)10, and O-13(8)5 by large scale s hell model calculations with the effect of loosely-bound single particle wa ve functions. Large El strength is found in the low excitation energy regio n below E-x=3 MeV in both Be-12(4)8 and O-13(8)5, while strong E1 strength is found only in high excitation energy region above E-x=7 MeV in Be-14(4)1 0. The effect of extended wave functions and the coherence in the transitio n amplitudes enhance significantly the E1 strength in the low energy region . A manifestation of melting of the shell magicity at N = 8 and Z = 8 is po inted out in the systematics of E1 transitions in Be and O isotopes.