GAMMA ENERGY DEPOSITION IN INFINITE SOURCE MEDIA (thesis)

Technical Report · Tue May 15 04:00:00 EDT 1962

OSTI ID:4829286

Lorenz, A

Based on the principle of energy conservation, a timeindependent multigroup technique to calculate photon energy deposition in materials composing an infinite gammaray source medium was derived and coded for the IBM 7090 computer. Applicable to homogeneous media, the method is extended to treat nonhomogeneous media by applying self-shielding corrections to the cross sections. The results of sample calculations show good agreement with Monte Carlo results. The code utilizes microscopic crosssection input in calculating self-shielding factors, probabilities of gamma-ray interactions and energy downscatter; these quantities determine the allocation of the photon energies of a given source spectrum to the constituent elements of the medium. With a capacity to handle 30 energy groups and 9 materials, a single problem runs a fraction of a minute on the IBM 7090 computer. (auth)

• Research Organization: California. Univ., Livermore. Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-16-024287
• OSTI ID: 4829286
• Report Number(s): UCRL-6891
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
COMPUTERS
CROSS SECTIONS
ENERGY
GAMMA SOURCES
HOMOGENEOUS REACTORS
IBM 7090
INTERACTIONS
NUMERICALS
PHOTONS
PHYSICS
PROGRAMMING
SCATTERING
SPECTRA
TRANSPORT THEORY