NaI(Tl)

Of all the available scintillators NaI(Tl) is the most extensively used material.

NaI(Tl) crystals are widely used for radiation detection: in nuclear medicine, for environmental monitoring, in nuclear physics, aerial survey, well logging and in many other applications.

Features & Benefits Properties

High light output
Available in single crystal & polycrystalline form
No significant self absorption of scintillation light
Emission spectrum well matched with the sensitivity curve of photomultiplier tubes (PMTs) with bialkali photocathodes

Density [g/cm³]	3.67
Melting point [K]	924
Thermal expansion coefficient [C-¹]	47.7 x 10^-6
Cleavage plane	<100>
Hardness (Mho)	2
Hygroscopic	yes
Wavelength of emission max. [nm]	415
Refractive index @ emission max	1.85
Primary decay time [ns]	250
Light yield [photons/keVγ	38
Temperature coefficient of light yield	-3%C^-1

NaI(Tl)

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