Unfolding the effects of the T = 0 and T = 1 parts of the two-body interaction on nuclear collectivity in the f - p shell

Calculations of the spectra of various even-even nuclei in the fp shell ({sup 44}Ti, {sup 46}Ti, {sup 48}Ti, {sup 48}Cr, and {sup 50}Cr) are performed with two sets of two-body interaction matrix elements. The first set consists of the matrix elements of the FPD6 interaction. The second set has the...

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Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 2005-09, Vol.72 (3), Article 034314
Main Authors: Robinson, Shadow J. Q., Escuderos, Alberto, Zamick, Larry
Format: Article
Language:English
Subjects:
CHROMIUM 48
CHROMIUM 50
MATRIX ELEMENTS
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEON-NUCLEON INTERACTIONS
TITANIUM 44
TITANIUM 46
TITANIUM 48
TWO-BODY PROBLEM
VANADIUM 46
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Summary:Calculations of the spectra of various even-even nuclei in the fp shell ({sup 44}Ti, {sup 46}Ti, {sup 48}Ti, {sup 48}Cr, and {sup 50}Cr) are performed with two sets of two-body interaction matrix elements. The first set consists of the matrix elements of the FPD6 interaction. The second set has the same T=1 two-body matrix elements as the FPD6 interaction, but all the T=0 two-body matrix elements are set equal to zero (T0FPD6). Surprisingly, the T0FPD6 interaction gives a semireasonable spectrum when compared to FPD6 (or else this method would make no sense). A consistent feature for even-even nuclei, e.g., {sup 44,46,48}Ti and {sup 48,50}Cr, is that the reintroduction of T=0 matrix elements makes the spectrum look more rotational than when the T=0 matrix elements are set equal to zero. The odd-odd nucleus {sup 46}V is also discussed. In general, but not always, the inclusion of T=0 two-body matrix elements enhances the B(E2) rates.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.72.034314