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Title: Beta-decay from r-process waiting-point nuclei

Abstract

Beta-decay rates in neutron-rich nuclei with closed neutron shells govern the relative abundances of heavy elements made by the astrophysical r process. We calculate the beta-decay half-lives of these important nuclei in a fully microscopic self-consistent HFB+QRPA model, using the same Skyrme force for the particle-hole channel in both HFB and QRPA and a two-Gaussian neutron-proton (np) particle-particle interaction. In most cases we find smaller half-lives than do other groups; the reason is our inclusion of the residual particle-particle interaction. Our results are closest to those of others for doubly magic nuclei, in which the particle-particle interaction has little effect. (c) 1999 American Institute of Physics.

Authors:
 [1];  [1]
  1. Department of Physics and Astronomy, University of North Carolina at Chapel Hill (United States)
Publication Date:
OSTI Identifier:
20216655
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 481; Journal Issue: 1; Other Information: PBD: 2 Sep 1999; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; NEUTRON-RICH ISOTOPES; BETA DECAY; R PROCESS; HARTREE-FOCK-BOGOLYUBOV THEORY; NUCLEAR POTENTIAL; HALF-LIFE; THEORETICAL DATA

Citation Formats

Engel, J., and Bender, M. Beta-decay from r-process waiting-point nuclei. United States: N. p., 1999. Web. doi:10.1063/1.59534.
Engel, J., & Bender, M. Beta-decay from r-process waiting-point nuclei. United States. doi:10.1063/1.59534.
Engel, J., and Bender, M. Thu . "Beta-decay from r-process waiting-point nuclei". United States. doi:10.1063/1.59534.
@article{osti_20216655,
title = {Beta-decay from r-process waiting-point nuclei},
author = {Engel, J. and Bender, M.},
abstractNote = {Beta-decay rates in neutron-rich nuclei with closed neutron shells govern the relative abundances of heavy elements made by the astrophysical r process. We calculate the beta-decay half-lives of these important nuclei in a fully microscopic self-consistent HFB+QRPA model, using the same Skyrme force for the particle-hole channel in both HFB and QRPA and a two-Gaussian neutron-proton (np) particle-particle interaction. In most cases we find smaller half-lives than do other groups; the reason is our inclusion of the residual particle-particle interaction. Our results are closest to those of others for doubly magic nuclei, in which the particle-particle interaction has little effect. (c) 1999 American Institute of Physics.},
doi = {10.1063/1.59534},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 481,
place = {United States},
year = {1999},
month = {9}
}