System for use with solid state dosimeter
US4954707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/11
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention constitutes a system for determining the amounts of ionizing radiation to which dosimeters using thermoluminescent materials have been exposed. In accordance with this system, the thermoluminescent materials which comprise the dosimeters are first cooled by contact with a cryogenic substance such as liquified nitrogen. The thermoluminescent materials are then optically stimulated by exposure to ultraviolet light. Thereafter, the amounts of visible light emitted by the thermoluminescent materials are detected and counted as the materials are allowed to warm up to room temperature. The amounts of luminescence exhibited by the materials are related to radiation exposure and provide a sensitive measure of radiation dosage. It has been discovered that the above procedure is most effective when heavily doped thermoluminescent materials are used and that the procedure allows many useful plastic materials to now be employed in dosimeter constructions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.