MONTE CARLO RESEARCH SERIES: TWO EXPERIMENTS ON VOID GAP EFFECTS IN A ONE DIMENSIONAL HETEROGENEOUS SYSTEM

Technical Report · Fri Apr 25 04:00:00 EST 1958

OSTI ID:4801450

Beeler, J R

The diffusion length, escape fraction and absorption point distribution were computed for a one-dimensional heterogeneous system of alternating solid and void segments. These results are compared with those computed for the homogeneous counterpart of the heterogeneous system. The solid segments were 1.0 cm long. The void segment length varied from 0.4 to 2.0 cm. The total cross section in a solid segment was 2.0 cm/sup -1/and the absorption cross section in the range 0.1--0.4 cm/sup -1/. The difference in diffusion length, between a heterogeneous and homogeneous system, was less than 7% for a point source located at the end of a solid segment and less than 1.3% for a point source located at the center of a solid segment. In a finite geometry the homogeneous model overe stimated the leakage fraction and underestimated the absorption point density by as much as 33% in a solid segment. (auth)

• Research Organization: General Electric Co. Aircraft Nuclear Propulsion Dept., Cincinnati
• DOE Contract Number: AT(11-1)-171
• NSA Number: NSA-16-008304
• OSTI ID: 4801450
• Report Number(s): DC-58-5-97
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
AIRCRAFT
BUCKLING
CONFIGURATION
CROSS SECTIONS
DIFFUSION LENGTH
EQUATIONS
ERRORS
FUELS
HOMOGENEOUS REACTORS
LEAKS
LOSSES
MEASURED VALUES
METALS
MODERATORS
MONTE CARLO METHOD
NEUTRON FLUX
NEUTRON SOURCES
NUMERICALS
PROPULSION
REACTIVITY
REACTOR CORE
REACTOR TECHNOLOGY
REACTORS
RESONANCE ESCAPE PROBABILITY
SOLIDS
THERMAL UTILIZATION
ZONES