Self-radiation damage in actinide host phases of nuclear waste forms
Three crystalline ceramic materials, which occur as host phases for the long-lived actinides in many nuclear waste formulations, were doped with Cm-244, and the effects of self-radiation damage from alpha decay on microstructure and physical properties were investigated. The irradiation-induced microstructure consisted of individual amorphous tracks from both the alpha-recoil particles and the spontaneous fission fragments. The eventual overlap of the tracks at higher doses leads to a completely amorphous state. This radiation-induced amorphization process results in measured increases in volume, leachability, and stored energy. Thermal recovery of the radiation-induced swelling and amorphization occurs with full recrystallization to the initial structures. 21 references, 5 figures, 2 tables.
- Research Organization:
- Pacific Northwest Lab., Richland, WA
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6564075
- Journal Information:
- Mater. Res. Soc. Symp. Proc.; (United States), Vol. 44
- Country of Publication:
- United States
- Language:
- English
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Radiation effects in actinide host phases
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Related Subjects
36 MATERIALS SCIENCE
CERAMICS
PHYSICAL RADIATION EFFECTS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE PROCESSING
SOLIDIFICATION
ALPHA PARTICLES
AMORPHOUS STATE
CERIUM 144
EXPERIMENTAL DATA
FISSION FRAGMENTS
LEACHING
MICROSTRUCTURE
PHASE TRANSFORMATIONS
SWELLING
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CERIUM ISOTOPES
CHARGED PARTICLES
CRYSTAL STRUCTURE
DATA
DAYS LIVING RADIOISOTOPES
DISSOLUTION
EVEN-EVEN NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
MANAGEMENT
NUCLEAR FRAGMENTS
NUCLEI
NUMERICAL DATA
PROCESSING
RADIATION EFFECTS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SEPARATION PROCESSES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING
052001* - Nuclear Fuels- Waste Processing
052002 - Nuclear Fuels- Waste Disposal & Storage
360206 - Ceramics
Cermets
& Refractories- Radiation Effects