Scintillating Crystals

Scintillating Crystals are used to detect the energy and intensity level of Y or X ray and provide high luminous efficiency. These crystals have been playing an important role in security inspection and detection devices in various occasions, such as airport, railway station, custom port as well as oil field and geographic exploration. MTI supplies high quality scintillation crystals, mainly CdWO4, CsI(Tl) and Ce:YAG etc. at the most competitive price to meet customer's every demand. We usually don't keep the scintillation crystal components in stock. If you have any need, please let us know size, polished face, crystal orientation and quantity, we will reply you within 24 hours

Properties/crystal

CsI (Tl)

NaI (Tl )

Ce:Lu2SiO5

PbWO4

CdWO4

BGO

Ce:YAG

Crystal structure

cubic

cubic

Trigonal

Tetragonal

Monoclinic

Cubic

Cubic

Lattice constant ( A )

4.566

6.46

a=14.254b=10.241c=6.641gamma=122.o

a = 5.416
c = 12.049

a=5.028, b=5.859
c=5.071, beta=91.519o

a=10.103

a=12.01

Melting point, oC

651

651

2047

1123

1325

1050

1950

Density, g/cm3

4.51

3.67

7.4

8.28

7.9

7.13

4.55

Mohn hardness

2

2

5.8

3.5 - 4.0

4 - 4.5

5

8.5

Thermo expans 10-6/K

50

18.4

19.5

10

10.2

0.7

0.8-0.9

Refractive index

1.79

1.85

1.82

2.16

2.2 - 2.3

2.15

1.82

Emission wavelength (nm )

540

410

418

450 / 420

470/540

480

550

Decay constant(ns )

900

230

0.94

36

20 ns @ 470nm
5 ms @ 540 nm

300

70

Radiation length ( cm )

1.86

2.9

/

0.92

0.3

1.1

3.5

Hygroscopic

slightly

yes

none

No

no

no

no

Afterglow % at 6ms

< 2

-

40 ns

-

0.1

<0.005

<0.005

Light yield [photons/MeVy]

52- 56 x103

38 x 103

/

22.6~ 25.6x 104

1.2 - 1.5 x 104

5.7-7.6 x 103

1.5 x 103

Crystal cleavage plane

none

(100)

Z

(101)

(010)

no

No

Growth method

Bridgman

Bridgman

Bridgman

CZ

CZ

Bridgman

CZ

Max. Size, (mm)
Diameter / Length

100/300

100/300

60 /50

35/200

35/200

50x130

50 / 100
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