Back to Search
Start Over
$\beta$-decay half-lives of neutron-rich nuclei and matter flow in the $r$-process
- Source :
- Phys. Lett. B 723, 172-176 (2013)
- Publication Year :
- 2012
-
Abstract
- The $\beta$-decay half-lives of neutron-rich nuclei with $20 \leqslant Z \leqslant 50$ are systematically investigated using the newly developed fully self-consistent proton-neutron quasiparticle random phase approximation (QRPA), based on the spherical relativistic Hartree-Fock-Bogoliubov (RHFB) framework. Available data are reproduced by including an isospin-dependent proton-neutron pairing interaction in the isoscalar channel of the RHFB+QRPA model. With the calculated $\beta$-decay half-lives of neutron-rich nuclei a remarkable speeding up of $r$-matter flow is predicted. This leads to enhanced $r$-process abundances of elements with $A \gtrsim 140$, an important result for the understanding of the origin of heavy elements in the universe.<br />Comment: 14 pages, 4 figures
- Subjects :
- Nuclear Theory
Astrophysics - Solar and Stellar Astrophysics
Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Lett. B 723, 172-176 (2013)
- Publication Type :
- Report
- Accession number :
- edsarx.1210.0680
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physletb.2013.04.048