Geiger-Muller by Madison White

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Slide Notes

Geiger-Muller

Published on Nov 18, 2015

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PRESENTATION OUTLINE

WHAT IS A GEIGER-MULLER?

Photo by Leo Reynolds

The Geiger–Müller tube (or G-M tube) is the sensing element of the Geiger counter instrument used for the detection of ionizing radiation.

Photo by kawanet

There are two main types of geiger tube construction.

For alpha, low energy beta and low energy X-ray detection the usual form is a cylindrical end-window tube.

The pancake tube is a form of end window tube which is specifically designed for use in alpha and beta contamination monitoring.

The next slide is a Geiger counter using an "end window" tube for low penetration radiation.

Untitled Slide

Hans Geiger is the co-inventor of the Geiger-Müller. He was a German physicist who also discovered the atomic nucleus.

In 1928 Geiger and his student Walther Müller created an improved version of the Geiger counter, the Geiger–Müller counter.

The efficiency of detection of a G-M tube varies with the type of incident radiation.

Chromium iron is a commonly used material, which gives an efficiency of about 1% over a wide range of energies.

Photo by DanR

While it is a robust and inexpensive detector, it is unable to measure high radiation rates efficiently, has a finite life in high radiation areas and is unable to measure incident radiation energy, so no spectral information can be generated and there is no discrimination between radiation types.

THANK YOU!

Madison White