Measurement of gamma-ray production cross sections in neutron-induced reactions for Al and Pb
- Universitaet Wien (Austria). Institut fuer Radiumforschung und Kernphysik
- Los Alamos National Lab., NM (United States)
The prompt gamma-radiation from the interaction of fast neutrons with aluminum and lead was measured using the white neutron beam of the WNR facility at the Los Alamos National Laboratory. The samples (Al and isotopically enriched {sup 207}Pb and {sup 208}Pb) were positioned at about 20 m or 41 m distance from the neutron production target. The spectra of the emitted gamma-rays were measured with a high-resolution HPGe detector. The incident neutron energy was determined by the time-of-flight method and the neutron fluence was measured with a U fission chamber. From the aluminum gamma-ray spectra excitation functions for prominent gamma-transitions in various residual nuclei (in the range from O to Al) were derived for neutron energies from 3 MeV to 400 MeV. For lead (n,xn{gamma}) reactions were studied for neutron energies up to 200 MeV by analyzing prominent gamma-transitions in the residual nuclei {sup 200,202,204,206,207,208}Pb. The experimental results were compared with nuclear model calculations using the code GNASH. A good overall agreement was obtained without special parameter adjustments.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Fund for Advancement of Scientific Research in Austria (Austria)
- DOE Contract Number:
- W-7405-ENG-36; W-7405-ENG-48
- OSTI ID:
- 26536
- Report Number(s):
- LA-UR-95-52; CONF-9411185-2; ON: DE95006402; TRN: 95:008223
- Resource Relation:
- Conference: NEANC specialist`s meeting on measurement, calculation, and evaluation of photon production data, Bologna (Italy), 9-11 Nov 1994; Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
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