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CsI Crystal and Arrays

CSI1D01616C0
CSI1D01625C0
CSI1D06408C0

Cesium iodide (CsI) crystals are colorless, transparent materials with a cubic structure. Based on the incorporation of different activator dopants, they are commonly categorized into three scintillator variants: thallium-activated CsI(Tl), sodium-activated CsI(Na), and undoped pure CsI(p-CsI).

CsI crystals exhibit common characteristics of being soft, easily machinable, and non-cleaving, which facilitates their customization into various geometries. Among them, CsI(Tl) crystals are recognized as one of the highest light-yield scintillators, featuring a broad emission wavelength range that exhibits excellent matching with silicon photodiodes. Due to the cost-effectiveness, CsI-based scintillators have been widely used in diverse applications including luggage security screening, radiation dosimetry, industrial nondestructive testing, medical SPECT imaging, and high-energy physics detection.Cesium iodide (CsI) crystals are colorless, transparent materials with a cubic structure. Based on the incorporation of different activator dopants, they are commonly categorized into three scintillator variants: thallium-activated CsI(Tl), sodium-activated CsI(Na), and undoped pure CsI(p-CsI).

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Features Technical Indicators Overall Dimension

Application：

Features:
• High light-output
• Fast decay time
• Non-cleaving
• Bridgman growth method
• Cost-effective
• Dia. 90×300 mm (crystal ingot)
• Various encapsulation techniques
• Arrays of various pixel sizes

Technical Specification	Csl (Tl)	Csl (Na)	Csl (pure)
Crystal system	cubic	cubic	cubic
Density (g/cm³)	4.51	4.51	4.51
Wavelength of emission maximum (nm)	550	420	315
Lower wavelength cutoff (nm)	20	300	260
Melting point (°C)	621	621	621
Light yield（ph./MeV/y）	52 ~ 56 X 10³	38 ~ 44 X 10³	2 X 10³
Afterglow @20ms	< 0.5%	< 0.5 ~ 5%	/
Primary decay time (μs)	1	0.63	0.016
Refractive index at emission maximum@550nm	1.79	1.84	1.95
Hardness (Mohs)	2	2	2
Hygroscopic	slightly	yes	slightly
Typical product form	linear array	1-inch/3-inch crystal	2-inch crystal
Typical applications	luggage security screening	logging while drilling	high-energy physics
Typical applications	radiation dosimetry	logging while drilling	high-energy physics

This document cannot be considered to be a contractual specification.
The information given herein may be modified without notice.