Nuclear astrophysics from neutron cross-section measurements on radiactive samples

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:7035886

Koehler, P E; O'Brien, H A

Reaction rates for both big-bang and stellar nucleosynthesis calculations can be obtained from the measurement of (n,p) (n, ..cap alpha..) and (n,..gamma..) cross sections for radioactive nuclei. In the past, large backgrounds associated with the sample activity limited these types of measurements to radioisotopes with very long half lives. The advent of the high-intensity neutron source at the Los Alamos Neutron Scattering CEnter (LANSCE) has greatly increased the number of nuclei which can be studied. Results of recent measurements on samples with half lives as short as fifty-three days are given. Plans for future measurements are discussed. 32 refs., 3 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7035886
• Report Number(s): LA-UR-88-3177; CONF-881151-3; ON: DE89000316
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
653003 -- Nuclear Theory-- Nuclear Reactions & Scattering
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
BARYON REACTIONS
CROSS SECTIONS
HADRON REACTIONS
ISOTOPES
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEOSYNTHESIS
RADIOISOTOPES
SYNTHESIS
YEARS LIVING RADIOISOTOPES