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Irradiated Polyethylene as an Irradiation Dosimeter

IP.com Disclosure Number: IPCOM000093327D
Original Publication Date: 1967-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Radovsky, DA: AUTHOR [+2]

Abstract

This direct radiation dosimeter uses polyethylene as the main measuring medium. Polyethylene increases in fluorescence linearly with increasing dosage from 0 to 40 megarads of ionizing radiation, e.g., high-speed electrons. The polyethylene dosimeter is exposed to the radiation and the extent of its fluorescence is determined by suitable equipment such as a spectrophotofluorometer. One widely used dosimeter, the Ferrous-Ferric System, which is considered the most reliable dosimeter system presently available, is usable over the range of 4,000 rads to 40,000 rads, and with adjustment to 270, 000 rads. This is a very low dosage range compared to the 40 megarads to which the polyethylene dosimeter is measurable. A 1/ 16'' thick piece of polyethylene material is utilized. The material is processed in a commercial 1.

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Irradiated Polyethylene as an Irradiation Dosimeter

This direct radiation dosimeter uses polyethylene as the main measuring medium. Polyethylene increases in fluorescence linearly with increasing dosage from 0 to 40 megarads of ionizing radiation, e.g., high-speed electrons. The polyethylene dosimeter is exposed to the radiation and the extent of its fluorescence is determined by suitable equipment such as a spectrophotofluorometer. One widely used dosimeter, the Ferrous-Ferric System, which is considered the most reliable dosimeter system presently available, is usable over the range of 4,000 rads to 40,000 rads, and with adjustment to 270, 000 rads. This is a very low dosage range compared to the 40 megarads to which the polyethylene dosimeter is measurable. A 1/ 16'' thick piece of polyethylene material is utilized. The material is processed in a commercial 1. 0 mev insulating core transformer electron accelerator with dosages of 0, 10, 20, 40, 80, and 160 megarads. The fluorescence of the material is measured by an Aminco-Bowman spectrophotofluorometer

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