Capture cross section measurements of krypton and xenon isotopes and the fundamental parameters of the s-process

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170246· OSTI ID:5318644

Beer, H ^[1]

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1. Kernforschungszentrum Karlsruhe GmbH (Federal Republic of Germany)

The capture cross sections of Kr and Xe isotopes have been determined by a fast cyclic activation technique. The data were used to perform s-process calculations with phenomenological models. The weak and the main s-process component were studied. Astrophysical parameters were determined in the frame of the model, i.e., iron seed abundance, the neutron exposure, average number of neutrons captured by the iron seed, the temperature dependence of the neutron exposure, neutron density, temperature, and electron density. The solar abundances of Kr and Xe were determined. From the Kr-85 branching the pulse width of a pulsed s-process was estimated. The isotopic anomaly Xe-S, s-process Xe, was investigated. 51 refs.

• OSTI ID: 5318644
• Journal Information: Astrophysical Journal; (United States), Vol. 375; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
KRYPTON
ELEMENT ABUNDANCE
S PROCESS
SUN
CHEMICAL COMPOSITION
XENON
CAPTURE
CROSS SECTIONS
ELECTRON DENSITY
KRYPTON ISOTOPES
MATHEMATICAL MODELS
TEMPERATURE DEPENDENCE
THERMONUCLEAR REACTIONS
XENON ISOTOPES
ABUNDANCE
ELEMENTS
FLUIDS
GASES
ISOTOPES
MAIN SEQUENCE STARS
NONMETALS
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
RARE GASES
STAR EVOLUTION
STARS
SYNTHESIS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources
640104 - Astrophysics & Cosmology- Solar Phenomena