YAP:Ce Scintillators for Fast X-Ray Spectroscopy

Cerium doped Yttrium Aluminum Perovskite (YAP:Ce) crystals are fast and mechanically robust scintillators ideal for use in the detection of low energy X-rays and gamma rays. Due to the material’s very fast decay time, detectors equipped with YAP:Ce can be operated at count rates of several MHz.

Overview

Overview 

YAP:Ce scintillators offer an alternative to thin NaI(Tl) crystals traditionally used for low energy X-ray and gamma ray applications. The count rate of NaI(Tl) however, is limited to only several hundred kHz. YAP:Ce on the other hand is roughly ten times faster than NaI(Tl) allowing for its efficient use at very high count rates. In addition, YAP:Ce scintillators are not hygroscopic and do not need to be hermetically sealed. Fully finished YAP:Ce detector assemblies are available from Berkeley Nucleonics in a range of sizes and configurations. Contact BNC to discuss your requirements.

Specifications 

Physical Properties of YAP:Ce compared to NaI(Tl)

 

YAP:Ce

NaI(Tl)

Density (g/cm3)

5.55

3.67

Effective atomic number

36

50

Rel. photo electron yield

35-40

100

Refractive index

1.94

1.85

Emission maximum (nm)

350

410

Decay time (ns)

27

230

Hardness (Mho)

8.5

2

Hygroscopic

no

yes

Maximum diameter (mm)

50

500

Energy Resolution for YAP:Ce Scintillation Detectors

Source

Energy

Energy resolution (FWHM)

Am-241

59.5 keV

20%

I-129

30.0 keV

32%

Co-57

14.4 keV

45%

Fe-55

5.9 keV

69%

Accessories  

Free Online Training Module - An Introduction to Scintillation Crystals and Detectors

Visit our Training page to access the module or for more information

 

Datasheet 

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