These Detectors are categorised into two main classes depending on their application 1) Imaging, 2) Dose measurement, except this some Analytical instruments use these detectors.
Photographics plates are the simplest type of detector. Plates Coated with photosensitive chemical (silver halides) when exposed to Xray decomposes to form silver Metal. Now photographic plate type detectors replaced by semiconductor detectors both for imaging and analytical instruments (XRD).
X-Ray Gas Detectors are same as the radiation detectors used for detection of neutral (chargeless particle) radiation detectors.
These are categorised as following
- Gas Ionization Chamber
- Solid State detectors
- Scintillators
- Scintillator Solid state Detectors
Gas Filled Detectors / Gas Ionization Chamber
Gas ionisation chambers are generally a tubular structure in which a gas placed between two electrons allowed to be exposed to the radiation. which in turn ejects out an electron from the gas atoms shells giving a charge particle (ionised gas atom). This ion can now be drifted by the electric field. The ion is collected at the anode(+ve) so producing a pulse of current in circuit.
Gas ionisation chambers are generally a tubular structure in which a gas placed between two electrons allowed to be exposed to the radiation. which in turn ejects out an electron from the gas atoms shells giving a charge particle (ionised gas atom). This ion can now be drifted by the electric field. The ion is collected at the anode(+ve) so producing a pulse of current in circuit.
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| Geiger Muller Tube |
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