Nai(tl) Crystal scintillator

Density(g.cm-3)
3.67
Radiation length(cm)
2.59
Decay constant(us)
0.23us
Emission peak(nm)
415
Light yield(%NaI:Tl)
100
Melting point(°C)
651
Hardness(Mho)
2
refractive Index 
1.85
Hygroscopicity
Strongly
Cleavage
-100
Category: Product ID: 1065

Description

Product Details

NaI(Tl) is a kind of scintillation crystal with good properties. Single crystal NaI(Tl) is grown from pure NaI raw material doped with TlI. Its emission maximum is 415nm, which is well matched to the sensitivity curve of photomultiplier tubes (PMTs) with bialkali photocathodes.

The material has a very high luminescence efficiency, and exhibits no significant self absorption of the scintillation light and has good resolution ability to X-ray and γ-ray.

Press-forged NaI(Tl) crystal is derived from a unique manufacturing process in which single crystal ingots are recrystallized under heat and pressure. The characteristic improves mechanical strength but has no effect on the scintillation performance.

So it is widely recognized as suitable alternatives to single crystal scintillators in those applications where thermal and mechanical shock are encountered. Another feature of pressforged NaI(Tl) is the possibility to manufacture complicated detector geometries directly without extensive machining.

Relative light output(%)
100
Melting point(℃)651
Mohs hardness2.1Thermal expansion coefficient47.4 x 10-6 K-1
Cleavage plane(100)Light yield38x103Photons/MeVγ
Wavelength of emission maximum(nm)
415
Primary decay constant(ns)
250
Density(g/cm3)3.67Refractive index
1.85
HygroscopicityyesAfterglow0.3-0.5%@6mms

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