Langanke, K. and Dean, D. J. and Radha, P. B. and Alhassid, Y. and Koonin, S. E. (1995) Shell-model Monte Carlo studies of fp-shell nuclei. Physical Review C, 52 (2). pp. 718-725. ISSN 0556-2813 http://resolver.caltech.edu/CaltechAUTHORS:LANprc95
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Abstract
We study the gross properties of even-even and N=Z nuclei with A=48–64 using shell-model Monte Carlo methods. Our calculations account for all 0ħω configurations in the fp shell and employ the modified Kuo-Brown interaction KB3. We find good agreement with data for masses and total B(E2) strengths, the latter employing effective charges ep=1.35e and en=0.35e. The calculated total Gamow-Teller strengths agree consistently with the B(GT+) values deduced from (n,p) data if the shell-model results are renormalized by 0.64, as has already been established for sd-shell nuclei. The present calculations therefore suggest that this renormalization (i.e., gA=1 in the nuclear medium) is universal.
| Item Type: | Article |
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| Additional Information: | ©1995 The American Physical Society. Received 21 March 1995. This work was supported by NSF Grants Nos. PHY91-15574, PHY94-12818, and PHY94-20470, and by DOE Grant No. DE-FG02-91-ER40608. We thank Professor A. Poves for useful discussions and for supplying us with some results of his shell-model diagonalizations prior to publication. Computational cycles were provided by the Concurrent Supercomputing Consortium and by the VPP500, a vector parallel processor at the RIKEN supercomputing facility; we thank Dr. I. Tanihata and Dr. S. Ohta for their assistance with the latter. |
| Subject Keywords: | GAMOW-TELLER STRENGTH; DOUBLE-BETA-DECAY; 2+ STATE; RATES; FE-54; CA-48 |
| Record Number: | CaltechAUTHORS:LANprc95 |
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:LANprc95 |
| Alternative URL: | http://dx.doi.org/10.1103/PhysRevC.52.718 |
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
| ID Code: | 6547 |
| Collection: | CaltechAUTHORS |
| Deposited By: | Tony Diaz |
| Deposited On: | 13 Dec 2006 |
| Last Modified: | 26 Dec 2012 09:22 |
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