DEVELOPMENT AND VALIDATION OF THE 7LI(P,N) NUCLEAR DATA LIBRARY AND ITS APPLICATION IN MONITORING OF INTERMEDIATE ENERGY NEUTRONS

Conference · Mon Jan 01 00:00:00 EST 2001

OSTI ID:975802

Mashnik, S G ^[1]; Chadwick, M B ^[2]; Prokofiev, A ^[3]; Olsson, N ^[4]; Waters, L S ^[5]

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1. Stepan G.
2. Mark B.
3. Alexander
4. Nils
5. Laurie S.

Systematics have been created for neutron spectra from the 7Li(p,n) reaction at 0 degrees in the 50-200 MeV proton energy region. The available experimental data in the continuum part of the spectra show satisfactory overall agreement with a representation based on the phase-space distribution corresponding to the three-body breakup process 7Li(p,n 3He){alpha}, with empirical correction factors, which depend regularly on incident energy. Validation of the systematics included folding of the predicted neutron spectra with standard 238U neutron fission cross section. Modeled in this way distributions of neutron-induced fission events agree reasonably with experimental data. KEYWORDS: quasi-monoenergetic neutron beam, monitoring, nuclear data library, MCNPX code.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 975802
• Report Number(s): LA-UR-01-5631; TRN: US1006790
• Resource Relation: Conference: "Submitted to: Nuclear Data for Science and Technology, Tsukuba, Japan, October 7-12, 2001"
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DISTRIBUTION
FISSION
MONITORING
NEUTRON BEAMS
NEUTRON SPECTRA
NEUTRONS
PHASE SPACE
PROTONS
SPECTRA
VALIDATION