The morphology of collision cascades as a function of recoil energy

Conference · Fri Sep 01 04:00:00 EDT 1989

DOI:https://doi.org/10.1016/0022-3115(91)90232-V· OSTI ID:5284059

Heinisch, H. L.; Singh, B. N. ^[1]

---

1. Pacific Northwest Lab., Richland, WA (USA)

An analytical method based on defect densities has been devised to determine the threshold energies for subcascade formation in computer simulated collision cascades. Cascades generated with the binary collision code MARLOWE in Al, Cu, Ag, Au, Fe, Mo and W were analyzed to determine the threshold energy for subcascade formation, the number of subcascades per recoil per unit energy and the average spacing of subcascades. Compared on the basis of reduced damage energy, metals of the same crystal structure have subcascade thresholds at the same reduced energy. The number of subcascades per unit reduced damage energy is about the same for metals of the same crystal structure, and the average spacing of subcascades is about the same in units of lattice parameters. Comparisons between subcascade threshold energies and average recoil energies in fission and fusion neutron environments show the spectral sensitivity of the formation of subcascades.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5284059
• Report Number(s): PNL-SA-16991; CONF-891204--6; ON: DE90004115
• Country of Publication: United States
• Language: English

Related Subjects

656002* -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
CASCADE THEORY
COLLISIONS
COMPUTER CODES
COMPUTERIZED SIMULATION
COPPER
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DEFECTS
ELEMENTS
GOLD
IRON
IRRADIATION
M CODES
METALS
MICROSTRUCTURE
MOLYBDENUM
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SILVER
SIMULATION
TRANSITION ELEMENTS
TUNGSTEN