Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2003-03-18
Phys.Rev. C68 (2003) 044322
Physics
Nuclear Physics
Nuclear Theory
14 pages, 9 figures, RevTex4
Scientific paper
10.1103/PhysRevC.68.044322
The Shell Model Monte Carlo (SMMC) approach has been applied to calculate level densities and partition functions to temperatures up to ~ 1.5 - 2 MeV, with the maximal temperature limited by the size of the configuration space. Here we develop an extension of the theory that can be used to higher temperatures, taking into account the large configuration space that is needed. We first examine the configuration space limitation using an independent-particle model that includes both bound states and the continuum. The larger configuration space is then combined with the SMMC under the assumption that the effects on the partition function are factorizable. The method is demonstrated for nuclei in the iron region, extending the calculated partition functions and level densities up to T ~ 4 MeV. We find that the back-shifted Bethe formula has a much larger range of validity than was suspected from previous theory. The present theory also shows more clearly the effects of the pairing phase transition on the heat capacity.
Alhassid Yoram
Bertsch George F.
Fang Lujun
No associations
LandOfFree
Nuclear level statistics: extending the shell model theory to higher temperatures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nuclear level statistics: extending the shell model theory to higher temperatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear level statistics: extending the shell model theory to higher temperatures will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-118819