Thermally Stimulated Current Dosimetry.
Abstract
This report describes an experimental program to develop a radiation dosimeter system based upon the measurement of thermally stimulated conductivity (TSC) in dielectric materials. These materials spanned a broad range of atomic numbers and included MgF2, SiO2, CaF2, CaF2:Dy, SrF2, Y2O3:ThO2, LiNbO3, BaF2, HfO2, Ta2O5, ThO2, ThO2:CaO, Mylar and Lucite. The TSC of materials exposed to 60Co gamma radiation was measured during heating at linear rates to a maximum temperature of 450 C. Prominent TSC peaks were observed with ThO2, Y2O3:ThO2, and the plastics. The authors believe that the desirable dosimeter qualities of reusability and reproducibility can be attained with carefully fabricated doped crystals or with mixed polycrystals that are annealed near their melting temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 24, 1975
- Accession Number
- ADA006678
Entities
People
- D. C. Gates
- P. Krehl
- R. A. Armistead
- T. J. Magee
Organizations
- SRI International