Calculation of neutron cross sections on iron between 3 and 40 MeV. [Hauser-Feshbach model]

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5697551

Arthur, E D; Young, P G

The use of high energy d+Li sources to produce neutrons for radiation damage studies will require evaluated neutron cross sections up to energies of 40 MeV. Experimental data in this energy region are scarce, and reliance must be placed upon nuclear model calculations to provide the necessary cross sections. We have thus calculated neutron-induced cross sections on /sup 54/Fe and /sup 56/Fe between 3 and 40 MeV using the multistep preequilibrium Hauser-Feshbach model code GNASH. Special care was taken in the determination of optical model parameters applicable over this wide energy range through use of, and comparison to, neutron total cross section and elastic angular distribution data, (p,n), and (..cap alpha..,n) data, as well as other high energy proton induced reaction cross sections and spectral results. The preequilibrium-statistical calculations using these parameters as well as gamma-ray strength functions, level densities, and discrete level information reproduce well most available experimental measurements above 3 MeV for varied reaction types including gamma-ray production data. 12 references.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5697551
• Report Number(s): LA-UR-79-2834; CONF-791058-13
• Country of Publication: United States
• Language: English

Related Subjects

651515* -- Nuclear Properties & Reactions
A=39-58
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
CROSS SECTIONS
DATA
DATA FORMS
ELASTIC SCATTERING
ENERGY RANGE
GRAPHS
HADRON REACTIONS
HAUSER-FESHBACH THEORY
INFORMATION
IRON 54 TARGET
IRON 56 TARGET
ISOLATED VALUES
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEON REACTIONS
NUMERICAL DATA
OPTICAL MODELS
PHYSICAL RADIATION EFFECTS
PRECOMPOUND-NUCLEUS EMISSION
RADIATION EFFECTS
SCATTERING
TARGETS
THEORETICAL DATA
TOTAL CROSS SECTIONS