IGNOU MCH 4 2018 - List the various types of detector commonly used in measurement of rad

Question

List the various types of detector commonly used in measurement of radioactivity. Discuss any one of them in detail.

06 Apr 2018

Answer :

Word Count : 570

There are three types of radiation detection devices:

The Electroscope
The Cloud Chamber
Other Detection Devices

THE ELECTROSCOPE

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Marie Curie used an electroscope to study the radioactivity or Uranium ores. The electroscope is a fairly simple device comprised of a metal rod with two thin leaves attached to one end. If the electroscope is given a negative charge, the metal leaves will separate from each other. It is this characteristic that makes the electroscope useful as a detection device. A negatively charged electroscope will discharge when ions in the air remove electrons from it, and consequently, a positively charged electroscope will discharge when it takes electrons from the air around it. The rate of discharge of the electroscope is a measure of ions in the air and can be used as a basis of measurement

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