Photoneutron Cross Sections of Astrophysical Significance

Journal Article · Mon Feb 26 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2713534· OSTI ID:21056758

Utsunomiya, H ^[1]

---

1. Department of Physics, Konan University, Higashinada, Kobe 658-8501 (Japan)

Presented in this paper are some of the latest measurements of photoneutron cross sections of direct relevance to the p-process nucleosynthesis in the context of the statistical model of compound nuclear reactions. We discuss the p-process origin of the rarest nuclide and the only naturally occurring isomer 180Tam, a serious underproduction problem of 138La, and the nuclear level density of 180Ta determined from the partial photoneutron cross section for 180Tam. As the laser-Compton scattering {gamma} ray at AIST has enabled one to directly determine ({gamma},n) cross sections, the blackbody synchrotron radiation to be produced by a ten-Tesla superconducting wiggler at SPring-8 is expected to be a promising tool for exploring ({gamma},{alpha}) and ({gamma},p) reactions in the future.

• OSTI ID: 21056758
• Journal Information: AIP Conference Proceedings, Vol. 891, Issue 1; Conference: 6. Symposium on nuclear physics, Tours (France), 5-8 Sep 2006; Other Information: DOI: 10.1063/1.2713534; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ASTROPHYSICS
COMPTON EFFECT
CROSS SECTIONS
ENERGY-LEVEL DENSITY
GAMMA RADIATION
ISOMERIC NUCLEI
LANTHANUM 138
NUCLEOSYNTHESIS
PHOTON-NUCLEON INTERACTIONS
PHOTONEUTRONS
PHOTONUCLEAR REACTIONS
SPRING-8 STORAGE RING
STATISTICAL MODELS
SYNCHROTRON RADIATION
TANTALUM 180