How Tungsten Geiger-Mueller Counter Work

Due to its high density and atomic mass, tungsten alloy exhibits excellent absorption behaviour against electromagnetic radiation such as X-rays and gamma-radiation.A thin layer of tungsten alloy can be used on the inside surface of a cylindrical cathode to give a tungsten Geiger-Mueller counter having high sensitivity and outstanding resistance to the halogen gas. Furthermore, it is surprising and unexpected that the tungsten alloy layer can be applied to the interior of a cylindrical cathode as a thin tungsten alloy foil thus omitting the necessity of electrodepositing the layer on the interior surface.

Tungsten radiation detection and measuring instrument. It consists of a tungsten gas-filled tube containing electrodes, between which there is an electrical voltage, but no current flowing. When ionizing radiation passes through and ionizes the gas within the tube a short, intense pulse of current passes from the negative electrode to the positive electrode and is measured or counted. The number of pulses per secondi an indication of the rate at which ionizing events are occurring within tungsten tube. It was named for Hans Geiger and W. Mueller, who invented it in the 1920s.It is sometimes called simply a Geiger counter or a G-M counter, and is the most commonly used portable radiation instrument.

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