Xenon from intermediate zones of supernovae.
Abstract
The paper examines the photodisintegration and neutron capture in massive stars which show that the bulk of the p-isotopes of Xe is formed during the gamma-process of Woosley and Howard (1978) by stripping of the Xe + Be seeds. The environments in which the chondrites can be formed were determined by the neutron-capture calculations; they show that the Xe-124-rich gas must be associated at the sources with anomalously large overabundances of Nd-142, Sm-144, and possibly Ba-130, and with anomalously small overabundances of the p-isotopes of Se, Kr, Sr, and Mo.
- Publication:
-
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- 1979
- Bibcode:
- 1979LPSC...10.1943H
- Keywords:
-
- Giant Stars;
- Photodissociation;
- Stellar Mass Ejection;
- Stellar Structure;
- Supernovae;
- Xenon Isotopes;
- Abundance;
- Capture Effect;
- Gamma Rays;
- Meteoritic Composition;
- Nuclear Reactions;
- Stellar Temperature;
- Temperature Effects;
- XENON;
- NUCLEOSYNTHESIS;
- SUPERNOVA;
- ISOTOPES;
- ORIGIN;
- NEUTRONS;
- GASES;
- ZONES;
- ANOMALIES;
- PHOTODISSOCIATION;
- STARS;
- EXPLOSIONS;
- XENON/XENON;
- ISOTOPIC RATIOS;
- CARBONACEOUS CHONDRITES;
- TEMPERATURES;
- DENSITY;
- COOLING;
- ABUNDANCE;
- COMPOSITION;
- PRODUCTION RATES;
- Lunar and Planetary Exploration; Planets;
- Nucleosynthesis:Supernovae