Crystals Land

* Welcome To CsI Crystal *
_________________________________________

 

 
Scintillation CsI Crystal series

Pure cesium iodide(CsI) crystal and the CsI crystal doped with thallium(Tl) or sodium(Na) ions are good scintillation crystals forγray and X ray detection. As a scintillator it could be made into elements with various shapes for different application. The dimension of elements could be millimeters and up to length of 350 mm and diameter of 120 mm. The crystal arrays coupled with photodiode are widely used in the apparatus for security inspection in airport and sea port. Its scintillation emission spectrum curves and scintillation properties are shown in the figure and table. There are photos shown the apparatus using CsI arrays for luggage and container inspection.

Scintillation Properties of CsI(Tl),CsI(Na), CsI Crystal

 

CsI(Tl)

CsI(Na)

CsI

Density[g/cm3]

4.51

4.51

4.51

Melting point[K]

894

894

894

Thermal expansion coefficient[K-1]

5410-6

4910-6

4910-6

Cleavage plane

none

none

None

Hardness(Mho)

2

2

2

Hygroscopic

slightly

yes

slightly

Wavelength of emission maximum[nm]

550

420

315

Lower wavelength cutoff[nm]

320

300

260

Refractive index at emission maximum

1.79

1.84

1.95

Primary decay time[us]

1

0.63

0.016

Afterglow(after 6ms)[%]

0.5-5.0

0.5-5.0

-

Light yield[photons/MeVγ]

52-56104

38-44104

2104

Photoelectron yield[% of NaI(Tl)](γrays)

45

85

4-6

 



 

_________________________________________

[SALE]
[aboutus] [PRODUCTS] [Services][CONTACT]
http://www.crystalsland.com
Copy right © 1996 GB group, Inc. All right reserved. E-Mail: webmaster@goldbridge.com