Crystal Materials Index

Bismuth Germanate

A relatively hard, high density, non-hygroscopic crystal with good gamma ray absorption. Often used for PET imaging and high energy physics applications as Compton shields.
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Cadmium Tungstate

A non-hygroscopic scintillator offering good light yield. Often used for CT applications. High radiopurity and low background.
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CLYC offers good Pulse Shape Discrimination (PSD) for neutron detection and better gamma-ray resolution than NaI (Sodium Iodide) or CsI (Cesium Iodide) making CLYC an ideal solution for several classes of handheld instruments, including Personal Radiation Detectors aka PRDs.


Supplied as a sintered ceramic the material has high light yield and low afterglow.
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Sodium Iodide

The material is hydroscopic and emits at short wavelengths. Finds applications in research areas such as Dark Matter as it can be produced very radiopure.
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Thallium doped Caesium Iodide

CsI(Tl) is a useful scintillator offering high light yield and emits at a wavelength suitable for silicon photomultipliers (SiPMs). Typical applications include arrays of this material used in security imaging systems, such as baggage scanners.
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Thallium doped Sodium Iodide

Crystals are available in a wide range of standard sizes and configurations either as separate crystals or in complete assemblies. Maximum light transfer is achieved by employing a high efficiency reflector chosen to suit the particular application for which the crystal is required. Materials used are selected to ensure low background count.
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Zinc Tungstate

A high density crystal with good radiation resistance and low afterglow properties. Typically used for particle physics and dark matter research.
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Caesium Iodide

The material with the deepest known IR transmission, CsI is often used for components in wide range spectrophotometers. A soft material that is rugged and shock resistant, slightly hydroscopic. Doped with thallium, CsI(Tl) is a useful scintillator.
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Calcium Fluoride

Widespread IR and near UV application as spectroscopic windows, prisms and lenses. Useful application in the UV as Eximer laser windows.
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Lithium Fluoride

Lithium fluoride is used as a diffracting crystal in X-ray spectrometry. It has a large energy gap and its crystals are transparent to short wavelength ultraviolet radiation.
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Potassium Bromide

Potassium Bromide is one of the most useful materials for general purpose spectroscopic windows and applications where sensitivity to moisture is unimportant. KBr is the most commonly used beamsplitter material for IR spectrophotometers.
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Sodium Chloride

Sodium Chloride, common rock salt, is one of the most useful materials for general purpose spectroscopic windows and applications where sensitivity to moisture is unimportant.
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