Computer simulation of collision cascades in monazite

Journal Article · Sun May 01 04:00:00 EDT 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.27.5347· OSTI ID:5770960

Robinson, M T

Collision cascades in the monoclinic mineral monazite have been studied with a modified version of the computer-simulation program marlowe. Most of the calculations were made for the irradiation of polycrystalline CePO/sub 4/ by normally incident 50-eV to 100-keV Ar atoms. A few calculations were made for 1-keV Cu atoms recoiling from lattice sites in a hypothetical form of Cu with the monazite structure. Although there are many fewer replacements and substantially more channeling in the mineral, collision cascades in monazite are generally similar to those in metals in size and shape. The dimensions of the calculated cascades suggest that the amorphization of monazite by Ar-ion irradiation probably commences when collision cascades begin to overlap. The calculations give a detailed view of the structure of the cascades in monazite that should be useful in interpreting radiation effects in proposed nuclear-waste isolation media.

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5770960
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 27:9; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
ACTINIDE COMPOUNDS
ARGON
ATOM COLLISIONS
CASCADE SHOWERS
CERIUM COMPOUNDS
CERIUM PHOSPHATES
COLLISIONS
COMPUTERIZED SIMULATION
COPPER
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
FLUIDS
GASES
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
MANAGEMENT
MATERIALS
METALS
MINERALS
MONAZITES
MONOCLINIC LATTICES
NONMETALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIOACTIVE MATERIALS
RADIOACTIVE MINERALS
RADIOACTIVE WASTE DISPOSAL
RARE EARTH COMPOUNDS
RARE GASES
SHOWERS
SIMULATION
THORIUM COMPOUNDS
THORIUM MINERALS
THORIUM PHOSPHATES
TRANSITION ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT