Thick-target neutron, gamma-ray, and radionuclide production for protons below 12 MeV on nickel and carbon beam-stops

Conference · Sun Mar 01 04:00:00 EST 1998

OSTI ID:650335

Chadwick, M B; Young, P G; Wilson, W B

Nuclear model calculations using the GNASH code are described for protons below 12 MeV incident on nickel and carbon isotopes, for beam stop design in the Los Alamos Accelerator Production of Tritium Low Energy Demonstration Accelerator (LEDA) project. The GNASH calculations apply Hauser-Feshbach and preequilibrium reaction theories and can make use of pre-calculated direct reaction cross sections to low-lying residual nucleus states. From calculated thin target cross sections, thick target 6.7 MeV and 12 MeV proton-induced production of neutrons, gamma rays, and radionuclides are determined. Emission spectra of the secondary neutrons and gamma rays are also determined. The model calculations are validated through comparisons with experimental thin- and thick-target measurements. The results of this work are being utilized as source terms in MCNP analyses for LEDA.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 650335
• Report Number(s): LA-UR--97-5014; CONF-971125--; ON: DE98004379
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
66 PHYSICS
BEAM DUMPS
CARBON 12 TARGET
CARBON 13 TARGET
COMPUTERIZED SIMULATION
DESIGN
MEV RANGE 10-100
NICKEL 58 TARGET
NICKEL 60 TARGET
NICKEL 61 TARGET
NICKEL 62 TARGET
NICKEL 64 TARGET
NUCLEAR REACTION YIELD
PROTON REACTIONS