Abstract
Results of an experimental investigation are reported on photoconductive response of Pyrex, Quartz and Vycor. This research was conducted as a feasibility study for developing a new gamma dose measurement device based on the principle of photoconductivity. However, data collected in this study are equally valuable for various other applications where these materials are to be used in high radiation field. Our experiments and analyzes indicated that the selected dosimeter materials exhibit photoconductivity and respond to changes in gamma dose rate within a useful range. Pyrex glass suffered radiation damage at a relatively high dose rate of 0.25 Gys/sup -1/. Quartz and Vycor exhibit significant advantages over Pyrex as dosimeter material. However, their limit of operability was found to be at a dose rate of approximately 28 mGy s/sup -1/. Vycor dosimeter in particular appears promising for gamma measurement applications. From an endurance point of view, Quartz appears to be the most suitable material for applications in high dose rate conditions, in that photo-currents in Quartz were observed to be minimum.
Recommended Citation
S. Usman et al., "Gamma-Ray Induced Photoconductivity in Pyrex, Quartz, and Vycor," IEEE Transactions on Nuclear Science, vol. 52, no. 6, pp. 3054 - 3058, Institute of Electrical and Electronics Engineers (IEEE), Dec 2005.
The definitive version is available at https://doi.org/10.1109/TNS.2005.861419
Department(s)
Nuclear Engineering and Radiation Science
Keywords and Phrases
Biomedical Applications of Radiation; Gamma-Ray Effects; Substrates Materials; Photoconductivity
International Standard Serial Number (ISSN)
0018-9499
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2005 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
Dec 2005