Martin Payne

Publication Date

7-1974

Advisor(s) - Committee Chair

William Buckman, E.S. Dorman, D.L. Humphrey

Degree Program

Department of Physics and Astronomy

Degree Type

Master of Science

Abstract

TLD-100 (lithium fluoride) thermoluminescence dosimeters are widely employed for the detection of ionizing radiations. This paper shows that these dosimeters may also serve as practical germicidal ultraviolet radiation dosimeters. To measure ultraviolet radiation, the TLD-100 dosimeters are first exposed to 500,000 roentgens of gamma radiation and then annealed at 300°C. Subsequent dosage of ultraviolet radiation may be determined by observation of photostimulated thermoluminescence of the crystal. The presented data indicate that the thermoluminescence response is linear for exposures up to 6,000 µjoule/cm2 and independent of exposure rate from 0.1 µ watt/cm2 to above 50 µwatt/cm2. Optical absorption, emission spectra, and sensitivity as a function of temperature of the dosimeters during ultraviolet exposure are presented. Also, a partial model of the photostimulated thermoluminescence process is presented.

Disciplines

Astrophysics and Astronomy | Physical Sciences and Mathematics | Physics

Download

Share

COinS