Brian David Stevens

US Patent:

48535486, Aug 1, 1989

Filed:

Nov 13, 1987

Appl. No.:

7/120037

Inventors:

Brian Stevens - Lutz FL

International Classification:

G01T 110

US Classification:

2504841

Abstract:

A device including a dosimeter badge containing a preset quantity of an aromatic endoperoxide, AO. sub. 2, for example the endoperoxide of rubrene or of 9,10-di-phenylanthracene in an organic matrix containing atoms of a high atomic number such as liquid O-dichlorobenzene or solid-P-dichlorobenzene. When exposed to ionizing radiation the aromatic endoperoxide decomposes to produce the fluorescent aromatic. After exposure, the badge is fluorometrically detected by exposing the pre-set quantity of light radiation and the fluorometric result measured, and a system for doing this is also disclosed. The badge preferably is constructed so as to contain two identical samples of the AO. sub. 2, one of which is shielded from ionizing radiation (by, e. g. , lead foil envelope) during exposure use, and the other of which is unshielded to such hard radiation while both samples are shielded against light and untraviolet radiation.