NEUTRON CAPTURE CROSS SECTION TO {sup 113}Cd ISOMER AND s-PROCESS CONTRIBUTION TO RARE p-NUCLIDE {sup 115}Sn
- Advanced Photon Research Center, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215 (Japan)
- National Astronomical Observatory, Mitaka, Tokyo 181-8588 (Japan)
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
A neutron capture cross section for the {sup 112}Cd(n, gamma){sup 113}Cd{sup m} reaction has been measured with neutrons provided from a nuclear reactor in order to study the astrophysical origin of a rare p-process isotope {sup 115}Sn, which may be produced by a nucleosynthesis flow through {sup 113}Cd{sup m} in the s-process. We have obtained the thermal neutron capture cross section of 0.028 +- 0.009 [b] and the resonance integral of 1.1 +- 0.3 [b] using a cadmium difference method. The cross section ratio of the isomer to the ground state has been calculated as a function of the incident neutron energy, E, by using a statistical model. The calculated ratios are almost constant over a wide range of E < 100 keV. We have evaluated the s-process contribution to the solar abundance of {sup 115}Sn using the classical steady-flow model with various astrophysical parameters. This calculated result has shown that the production through {sup 113}Cd{sup m} may give minor contribution to {sup 115}Sn.
- OSTI ID:
- 21392590
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 707; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABUNDANCE
ASTROPHYSICS
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CADMIUM 112 TARGET
CADMIUM 113
CADMIUM ISOTOPES
CAPTURE
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVEN-ODD NUCLEI
EVOLUTION
FERMIONS
FLUID FLOW
GROUND STATES
HADRON REACTIONS
HADRONS
INTEGRALS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOMERS
ISOTOPES
KEV RANGE
KEV RANGE 10-100
MATHEMATICAL MODELS
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUCLEOSYNTHESIS
PHYSICS
RADIOISOTOPES
RESONANCE INTEGRALS
S PROCESS
STABLE ISOTOPES
STAR EVOLUTION
STATISTICAL MODELS
STEADY FLOW
SYNTHESIS
TARGETS
THERMAL NEUTRONS
TIN 115
TIN ISOTOPES
YEARS LIVING RADIOISOTOPES