Level densities in deformed nuclei beyond the mean-field approximation
Abstract
Nuclear level densities are important inputs to the Hauser-Feshbach theory of compound nucleus reactions. Microscopic calculations of level densities often rely on the mean-field approximation, which underestimates level densities in deformed nuclei. The static-path plus random-phase approximation (SPA+RPA) includes large-amplitude thermal fluctuations and small-amplitude time-dependent quantal fluctuations beyond the mean field. We investigate how much of the rotational enhancement of the level density is recovered in the SPA+RPA by benchmarking the level densities calculated with a quadrupole-quadrupole interaction against exact results calculated with the auxiliary-field Monte Carlo method.
This work was supported in part by the U.S. DOE Grant No. DE-FG02-91ER40608 and by the DOE NNSA SSGF under cooperative agreement No. NA-0003864.- Publication:
-
APS April Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..APRG13001F