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A Geiger counter (Geiger-Muller tube) is a device used for the detection and The Geiger-Mueller tube is usually cylindrical, with a wire down the center. The. A BBC Bitesize secondary school revision resource for Standard Grade Physics on nuclear radiation: absorption, detection, ionisation, Geiger-muller tube. A geiger counter detects nuclear radiation by measuring the emission of ionizing radiation of alpha particles, Radiation detector: Geiger-Muller counting tub.


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This device calculates average and max values on the basis of which you can make reports and conclusions. It also determines the dose rate over a couple of days. Earphone input in some models enables you to detector geiger muller to the minimal changes of contamination.

Among additional functions you can find several measuring detector geiger muller, auto-zeroing and auto-ranging. Data is saved in internal memory and is preserved even after a battery change.

Geiger Mueller (GM) Detectors

Software and data cable that are included in the delivery simplify processing of the data and transferring it to the PC or detector geiger muller calculation programs such as Excel. We specialize in offering high-quality, sensitive and accurate Geiger counters for continuous protection against radiation.

They do not provide identification information unless coupled with alternate detectors. At some point its velocity is great enough to cause additional ionizations.

As the electrons approach the central wire, the additional ionizations produce a larger number of electrons in the vicinity of the central wire.

As discussed before, for each electron produced there is a positive ion produced. A loudspeaker is also used for indication For alpha particles, low energy detector geiger muller particles, and low energy X-rays, the usual form is a cylindrical end-window tube.

Geiger counter - Wikipedia

This type has a window at one end covered in a thin material through which low-penetrating radiation can easily pass. Mica is a commonly used material due to its low mass per unit area.

The other end houses the electrical connection to the detector geiger muller. Pancake tube[ edit ] Pancake G—M tube, the circular concentric anode can clearly be seen. The pancake tube is a variant of the end window tube, but which is designed for use for beta and gamma contamination monitoring.


It has roughly the same sensitivity to particles as detector geiger muller end window type, but has a flat annular shape so the largest window area can be utilised with a minimum of gas space. Like the cylindrical end window tube, mica is a commonly used window material due to its low mass per unit area.

Geiger Counter | PCE Instruments

The anode is normally multi-wired in concentric circles so it extends fully throughout the gas space. Windowless detector geiger muller edit ] This general type is distinct from the dedicated end window type, but has two main sub-types, which use different radiation interaction mechanisms to obtain a count.

Thick walled[ edit ] A selection of thick walled stainless steel G—M tubes for gamma detection.


Because most high energy gamma photons will pass through the detector geiger muller density fill gas without detector geiger muller, the tube uses the interaction of photons on the molecules of the wall material to produce high energy secondary electrons within the wall.

Some of these electrons are produced close enough to the inner wall of the tube to escape into the fill gas. As soon as this happens the electron drifts to the anode and an electron avalanche occurs as though the free electron had been created within the gas.