Double differential neutron emission cross sections of /sup 10/B and /sup 11/B at 6, 10 and 14 MeV and of /sup 6/Li, /sup 7/Li and /sup 12/C at 14 MeV
Neutron emission spectra of /sup 10/B and /sup 11/B were measured at 6, 10, and 14.1 MeV and those of /sup 6/Li, /sup 7/Li and carbon at 14.1 MeV using time-of-flight technique. Absolute double differential cross sections were obtained by using scattering from hydrogen as a cross section reference. Integration over energy ranges and solid angle yielded integrated elastic and total neutron emission cross sections. At 6 and 10 MeV excellent agreement with total cross section data is found, at 14.1 MeV the new data tend to be higher than expected. The biggest error source in the continuous spectra stems from uncertainties in the input library (ENDF/B-IV) of the Monte Carlo correction for multiple scattering. In particular, the library for /sup 11/B appears to be very unrealistic, with a total elastic cross section at 14.1 MeV which should be higher by 50%.
- Research Organization:
- Los Alamos National Lab., NM (USA); Vienna Univ. (Austria). Inst. fuer Experimentalphysik
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5598913
- Report Number(s):
- LA-UR-85-1743; CONF-850507-28; ON: DE85012749
- Country of Publication:
- United States
- Language:
- English
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A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BORON 10 TARGET
BORON 11 TARGET
CARBON 12 TARGET
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
EMISSION
ENERGY RANGE
EXPERIMENTAL DATA
HADRON REACTIONS
INFORMATION
LITHIUM 6 TARGET
LITHIUM 7 TARGET
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON EMISSION
NEUTRON REACTIONS
NEUTRON SPECTRA
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
SPECTRA
TARGETS