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Subject: Re: x-ray quantitative measurement

Date: 11/04/02 at 8:11 AM
Posted by: Alan Crawley
E-mail: alan.crawley@xtekxray.com
Message Posted:

In Reply to: x-ray quantitative measurement posted by richard graziano on 05/09/01 at 5:10 PM:

A device for measuring xray dose is called a Dosimeter, of which there are various types:

Quartz Fibre Dosimeter - uses a small charged quartz fibre, which discharges in the presence of ionising radiation - this movement can be read against a scale.

TLD - Thermo Luminescent Dosimeter. These are the like the film badges radiation workers use, but need specialist equipment to read the dose.

Electronic Dosimeter - based on GM (Geiger-Muller) tubes. Output usually fed to a counter.

Ionisation Chamber - good for calibrating equipment. Ionised gas in a given volume is meaured by passing a current. Current is a measure of the dose.

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