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CsI(Tl) scintillation crystal, CsI(Tl) Scintillator

Wavelength 550nm for PD

Excellence performance for afterglow and brightness in low energy x ray

FWHM 6-7.5% Cs137 662kev

Low cost

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CsI(Tl) Cesium Iodine doping thallium is the most typical alkali halide scintillation crystal which wavelength is 550nm, It's best matchable for PD, SiPM etc. CsI(Tl) has high density, High Z, No cleavage plane, excellent detection effiency, it's widely used in high energy physics, Nuclear detector, Space detection, security inspection,SPECT and container checking etc.

Specification:

Density [g/cm³]	4.51
Melting point [K]	894
Thermal expansion coefficient [K^-1]	54 x 10^-6
Cleavage plane	none
Mohs hardness (Mho)	2
Hygroscopic	Slightly
Wavelength [nm]	550
Lowest cut off wavelength [nm]	320
Refractive index	1.79
Decay time [µs]	1
Afterglow (after 6ms) [%]	0.5 - 5.0
Light yeild [photons/MeVγ]	52- 56 x10³
Photoelectron yeild ratio [% of NaI(Tl)] (y rays)	45