Effects of temperature in binary-collision simulations of high-energy displacement cascades

Conference · Thu Oct 01 04:00:00 EDT 1981

OSTI ID:5584972

Heinisch, H L

Several hundred cascades ranging from 1 to 500 keV were generated using the binary collision code MARLOWE for primary knock-on atoms (PKAs) with randomly chosen directions in both a non-thermal copper lattice and one having atomic displacements representative of room temperature. To simulate the recombination occurring during localized quenching of the highly excited cascade region, an effective spontaneous recombination radius was applied to reduce the number of defect pairs to be consistent with values extracted from resistivity measurements at 4/sup 0/K. At room temperature fewer widely separated pairs are produced, thus the recombination radius is smaller, however, the recombination radii were found to be independent of energy over the entire energy range investigated for both the cold and room temperature cases. The sizes and other features of the point defect distributions were determined as a function of energy. Differences between cold and room temperature cascade dimensions are small. The room temperature cascades tend to have a greater number of distinct damage regions per cascade, with about the same frequency of widely separated subcascades.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76FF02170
• OSTI ID: 5584972
• Report Number(s): HEDL-SA-2561-FP; CONF-811145-6; ON: DE82006042
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
COMPUTER CALCULATIONS
COPPER
DEFECTS
ELEMENTS
KNOCK-ON
MATERIALS
METALS
NUCLEAR CASCADES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SIMULATION
TEMPERATURE DEPENDENCE
THERMONUCLEAR REACTOR MATERIALS
TRANSITION ELEMENTS