SOPHIST I--AN IBM 709/7090 CODE WHICH CALCULATES MULTIGROUP TRANSFER COEFFICIENTS FOR GASEOUS MODERATORS

Technical Report · Thu Oct 19 00:00:00 EDT 1961

OSTI ID:4795464

Canfield, E H; Stuart, R N; Freis, R P; Collins, W H

SOPHIST I, a Fortran IBM 709/7090 code compatible with MONITOR, calculates temperature-dependent scattering transfer coefficients for use in multigroup diffusion codes. The moderator model is a Maxwell gas with elastic, isotropic scattering in the center of mass. SOPHIST I supersedes older versions with its greater speed, accuracy, and flexibility. The equations have been analytically reduced to one-dimensional integrals whose accurate evaluation is assured. Options allow analytic or arbitrary pointwise flux spectrums and a variable moderator mass for approximating chemical binding or crystalline effects. (auth)

• Research Organization: California. Univ., Livermore. Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-16-009583
• OSTI ID: 4795464
• Report Number(s): UCRL-5956
• Country of Publication: United States
• Language: English

Related Subjects

ANALOG SYSTEMS
BINDING ENERGY
COMPUTERS
CRYSTALS
ELASTIC SCATTERING
ENERGY
ENERGY RANGE
EPITHERMAL NEUTRONS
EQUATIONS
ERRORS
FAST NEUTRONS
GASES
GROUP THEORY
INTERACTIONS
MASS
MODERATORS
MOLECULES
MONITORING
NEUTRON FLUX
NUMERICALS
PROGRAMMING
REACTOR TECHNOLOGY
REACTORS
RESONANCE NEUTRONS
SCATTERING
SLOWDOWN
SPECTRA
SPECTRAL SHIFT
TEMPERATURE
THERMAL NEUTRONS
TRANSPORT THEORY
VARIATIONS