Recent results in explosive and s-process nucleosynthesis from measurements on radioactive and stable targets
- Los Alamos National Lab., NM (United States)
- Kernfroschengszentrum Karlsruhe, GmbH, (Germany); and others
Measurements of (n,p) and (n,{alpha}) cross sections are crucial for a better understanding of many scenarios of nucleosynthesis. Current problems in which such reactions play a roll include the possible synthesis of heavy element during the big bang. The production of several rare isotopes in explosive nucleosynthesis, and a better understanding of the role of the s process in the synthesis of light and intermediate mass nuclei. We have recently completed measurements of several (n,p) and (n,{alpha}) cross sections of importance to nuclear astrophysics. The cross sections were measured in the range from thermal energy to approximately 1 MeV by using the white neutron source at the Manuel Lujan, Jr. Neutron Scattering Center (LANSCE) in Los Alamos. We have also made complementary measurements at the Karlsruhe Van de Graaff and at thee Oak Ridge Electron Linear Accelerator (ORELA). We discuss the impact of the results on nuclear astrophysics as well as recent improvements and future plans.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10170129
- Report Number(s):
- LA-UR--93-2418; CONF-9309173--1; ON: DE93016520
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
663430
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 26 TARGET
ASTROPHYSICS
CHLORINE 36 TARGET
CROSS SECTIONS
KEV RANGE
LIGHT NUCLEI
NEUTRON REACTIONS
NUCLEON-INDUCED REACTIONS AND SCATTERING
NUCLEOSYNTHESIS
OTHER ASPECTS OF PHYSICAL SCIENCE
OXYGEN 17 TARGET
S PROCESS
SULFUR 33 TARGET
THERMAL NEUTRONS