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Gamow-Teller strength distributions in fp-shell nuclei

Radha, P. B. and Dean, D. J. and Koonin, S. E. and Langanke, K. and Vogel, P. (1997) Gamow-Teller strength distributions in fp-shell nuclei. Physical Review C, 56 (6). pp. 3079-3086. ISSN 0556-2813. http://resolver.caltech.edu/CaltechAUTHORS:RADprc97

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Abstract

We use the shell model Monte Carlo method to calculate complete 0f1p-shell response functions for Gamow-Teller (GT) operators and obtain the corresponding strength distributions using a maximum entropy technique. The approach is validated against direct diagonalization for 48Ti. Calculated GT strength distributions agree well with data from (n,p) and (p,n) reactions for nuclei with A=48–64. We also calculate the temperature evolution of the GT+ distributions for representative nuclei and find that the GT+ distributions broaden and the centroids shift to lower energies with increasing temperature.


Item Type:Article
Additional Information:©1997 The American Physical Society Received 29 July 1997 We acknowledge support from the U.S. National Science Foundation under Grant Nos. PHY94-12818 and PHY94-20470. Oak Ridge National Laboratory is managed by Lockheed Martin Energy Research Corp. for the U.S. Department of Energy under Contract No. DE-AC05-96OR22464. K.L. has been partly supported by the Danish Research Council. Grants of computational resources were provided by the Center for Advanced Computational Research at Caltech and the Center of Computational Science at ORNL.
Record Number:CaltechAUTHORS:RADprc97
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:RADprc97
Alternative URL:http://dx.doi.org/10.1103/PhysRevC.56.3079
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2631
Collection:CaltechAUTHORS
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Deposited On:13 Apr 2006
Last Modified:26 Dec 2012 08:50

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