Abstract
The γ-ray strength functions and nuclear level densities of 138La and 139La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections to investigate the production and destruction of the p-nucleus 138La in the photodisintegration process. The results confirm the underproduction of 138La in the p-process with respect to the observed abundances and strongly support the ν-process through νe capture on 138Ba as the main contributor to the synthesis of 138La in Type II supernovae.
Original language | English |
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Pages (from-to) | 268-272 |
Number of pages | 5 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 744 |
DOIs | |
Publication status | Published - 1 May 2015 |
Externally published | Yes |
Keywords
- Maxwellian averaged cross-sections
- Nuclear level densities
- γ-ray strength functions
ASJC Scopus subject areas
- Nuclear and High Energy Physics