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US 4,173,660 AGranted
Method of preparing a thermoluminescent phosphor
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsJerome B. Lasky, Paul R. Moran
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Abstract
A thermoluminescent phosphor comprising LiF doped with boron and magnesium is produced by diffusion of boron into a conventional LiF phosphor doped with magnesium. Where the boron dopant is made to penetrate only the outer layer of the phosphor, it can be used to detect shallowly penetrating radiation such as tritium beta ays in the presence of a background of more penetrating radiation.
Claims8
A method of preparing a thermoluminescent phosphor for use as a dosimeter comprising:
- providing a thermoluminescent phosphor of LiF doped with magnesium;
- heating said phosphor to a temperature in excess of 400.degree. C.;
- and
- contacting said phosphor with a boron-containing vapor whereby boron is diffused into the surface portion of said phosphor.
1 more element
Dependencies are inferred from the claim text.