THE ISOVECTOR QUADRUPOLE-QUADRUPOLE INTERACTION USED IN SHELL-MODEL CALCULATIONS

Authors
FAYACHE MS SHARMA SS ZAMICK L
Citation
Ms. Fayache et al., THE ISOVECTOR QUADRUPOLE-QUADRUPOLE INTERACTION USED IN SHELL-MODEL CALCULATIONS, Physics letters. Section B, 357(1-2), 1995, pp. 1-6
Citations number
21
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
357
Issue
1-2
Year of publication
1995
Pages
1 - 6
Database
ISI
SICI code
0370-2693(1995)357:1-2<1:TIQIUI>2.0.ZU;2-L
Abstract
The interaction -(X)Q . Q(1 + B tau(1).tau(2)) is used in a shell mode l calculation for Be-10. Whereas for B = 0 the 2(1)(+) state is two-fo ld degenerate, introducing a negative B causes an 'isovector' 2(+) sta te to come down to zero energy at B = -0.67 and an S = 1, L = 1 triple t (J = 0(+), 1(+), 2(+)) to come down to zero energy at B = -0.73. The se are undesirable properties, but a large negative B is apparently ne eded to fit the energy of the isovector giant quadrupole resonance.