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NaI(Tl)&BGO crystal

  NaI(Tl) crystal is a kind of scintillation crystal with good properties. It is grown by host material sodium iodide doped with appropriate percentage of thallium.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 has good resolution ability to X-ray and γ-ray. Our products are applied to the safety inspection system of the 2008 Beijing Olympics and the 2010 Shanghai World Expo. According to the customer request and application condition, we can produce various NaI(Tl) crystal, which can meet different needs for such as high temperature crystals, ruggedized crystals.

Main Properties

Relative light output%

100

Melting point(℃)

651

Mohs hardness

2.1

Thermal expansion coefficient

47.4 x 10-6 K-1

Cleavage plane

(100)

Light yield

38x103Photons/MeVγ

Wavelength of emission maximumnm

415

Primary decay constant(ns)

250

Densityg/cm3

3.67

Refractive index

1.85

Hygroscopicity

yes

Afterglow

0.3-0.5%@6mms

Cylinder crystals:Φ(5200mm×L5350mm,

Cuboid crystals:1L2L4L.

CsI Crystals

Φ(5250mm×L5300mm.

BGO Crystals

Φ(575mm×L575mm.

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