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Site last updated 06 Jun 2008
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Saint-Gobain Crystals and Detectors are the world's leading producer of organic and inorganic scintillation detectors.

Operated formerly under their divisional names of Crismatec and Bicron, SGCD manufacture a comprehensive range of inorganic crystal and organic plastic and liquid scintillators for the detection of x-rays, gamma rays, charged particles and neutrons.

[Go to Saint-Gobain Crystals and Detectors website]

UK Products
Scintillation Detector

Wide range of organic and inorganic materials
NaI(Tl) CsI(Tl) CsI(Na) BGO CaF2 BaF2 CsF CdWO4 YAP[Ce]
Standard integral and multi-line assemblies
Rugged high-temperature crystals
Scintillation 1-D & 2-D arrays

Properties of Scintillation crystals

Material

Density
(g/cm)

Wavelength of Maximum Emission (nm)

Decay Constant (1)

Index of Refraction (2)

Relative Conversion Efficiency (%) (3)

Hygro-
scopic

NaI (T1)

3.67

415

0.23 µs

1.85

100

Yes

CsI (T1)

4.51

550

1.0 µs

1.79

Slightly

CsI (Na)

4.51

420

0.63 µs

1.84

Yes

CsI (undoped)

4.51

315

16 ns

1.95

4-6

Slightly

CaF2 (Eu)

3.18

435

0.94 µs

1.47

⁶LiI (Eu)

4.08

470

1.4 µs

1.96

YES

⁶Li-glass

2.5-2.7

390-430

60 ns

1.55-1.57

4-6

CsF

4.64

390

3.5 ns

1.48

5-7

Yes

BaF2

4.88

310
220

0.63 µs
0.8 ns

1.50
1.54

16
5

GSO(Ce)

6.71

440

30-60 ns

1.85

20-25

BGO

7.13

480

0.3 µs

2.15

15-20

CdWO4

7.90

470/540

20/5 µs

2.30

25-30

NOTES
(1) (2) (3)	Effective average decay time for gamma rays. At the wavelength of the emission maximum. Relative scintillation signal at room temperature for gamma rays when coupled to a PMT with a bialkali photocathode.

Further information and data sheets are available at the SGCD website [go there]

UK Products Scintillation Detector

UK Products
Scintillation Detector