Scintillation Crystals and Detectors

 

Berkeley Nucleonics offers a full range of standard, specialized, and custom built scintillation detectors designed to meet the needs of the most demanding radiation counting applications. All known  scintillation materials are employed ranging from plastics to liquid scintillators to inorganic crystals such as NaI(Tl),  CsI(Tl) / (Na), high-density BGO, high-resolution CeBr3, plus many more.

The catalog of available designs is comprehensive and includes encapsulated scintillators with entrance windows, scintillators optically coupled to a light read-out device such as a PMT or SiPM, and complete detector assemblies with integrated, plug-on, or stand-alone electronics. Specialized designs such as Compton suppression shields, pixelated arrays, well type assemblies, ruggedized or miniaturized assemblies, plus a range of others are available as well. In addition, digital signal analysis is available from BNC via compact plug-on or stand alone Multi Channel Analyzers (MCAs). 

Contact BNC for more information or to discuss your application. You can can also tell us about your requirements by completing our brief detector Questionnaire.

Overview

Overview 

CeBr3 Detectors: Cerium Bromide scintillation crystals are characterized by their high resolution fast decay time, and low intrinsic background properties. With a background count as low as <0.001 c/cc/s in the Ac-227 complex, CeBr3 presents a distinct advantage over other high-resolution scintillators which suffer from this intrinsic activity. Typical energy resolution for 662 keV is ~4% FWHM.

Srl2(Eu) Detectors: Europium doped Strontium Iodide scintillators feature very high light yields and excellent performance over a broad range of energies. Srl2(Eu) crystals are inherently free of intrinsic radioactivity resulting in a reduction of background activity and fewer false peaks. Typical energy resolution for 662 keV is < 4% FWHM.

BaF2 Detectors: Barium Fluoride scintillators feature ultra-fast sub ns UV emissions.  BaF2 is used in physics fast timing research such as positron life studies.

Sodium Iodide Detectors: NaI(Tl) scintillation crystals are widely used in most standard gamma spectroscopy applications due to their unmatched high light output and excellent match of their emission spectrum to the sensitivity of photomultiplier tubes.

Cesium Iodide Detectors (Tl) (Na) (undoped):

CsI(Tl) scintillators are rugged, non-hygroscopic, and do not cleave. These detectors are frequently used as an alternative to NaI(Tl) for a wide range of applications. 

CsI(Na) is a non-hygroscopic, high light output scintillator mainly used for applications where mechanical stability and good energy resolution are required.

CsI(undoped) scintillators are fast, non-hygroscopic, and feature relatively low light output. A common use of undoped CsI is in physics calorimetry applications.

Plastic Detectors: Organic scintillators offer a comparatively cost effective alternative to inorganic crystals and can therefore be used in larger volumes. A large number of different organic scintillators are available for particle detection, neutron detection, Gamma / Neutron discrimination, and security or health physics applications.

 

 

CLYC:Ce Detectors: Cs2LiYCl6:Ce (CLYC) scintillators combine the characteristics of medium resolution gamma ray detectors and 3He neutron detectors in one scintillation material. CLYC scintillators can therefore be used for both gamma and neutron detection.

YAP:Ce Detectors: YAP scintillators are fast, provide high light output, and low Z values. Applications include MHz rate X-ray spectroscopy and synchrotron physics.

CaF2(Eu) Detectors: Europium doped calcium fluoride is a low density scintillation crystal with a high light output. Thanks to its low Z value it is well suited for the detection of electrons (beta particles) with a high efficiency (low backscatter fraction). CaF2(Eu) is also used in phoswich scintillation detectors in combination with NaI(Tl).

6Lil(Eu) Detectors: Used for thermal Neutron detection and spectroscopy, 6Lil(Eu) scintillators feature high neutron cross section and high light output.

CdWO4 Detectors: This material has a very high density, low afterglow, and is radiation hard. Common applications include low afterglow CT applications, DC measurements of X-rays (high intensity), photodiode readout, Computerized Tomography (CT).

LYSO Scintillators: LYSO crystals are fast, have high density and high Z value. Applications include PET, high energy physics.

PbWO4 Detectors: These fast, high density scintillators with low afterglow and  slow decay times are primarily used in calorimetry physics research.

BGO Detectors: BGO has a high density of 7.13 g /cm3 and has a high Z value which makes these crystals very suited for the detection of natural radioactivity (U, Th, K), for high energy physics applications (high photo fraction) or in compact Compton suppression spectrometers.

Liquid Scintillators: Doped liquids such as EJ-301 and EJ-309 offer fast neutron / gamma discrimination properties allowing for their use in Pulse Shape Discrimination (PSD) applications.

 

Specifications 

Material

Density (g/cm3)

Emission Maximum (nm)

Decay Constant (*)

Refractive Index (**)

Conversion Efficiency (***)

Hygroscopic

CeBr3

5.23

370

18 ns

1.9

130

Yes

Srl2(Eu)

4.6

400 - 480

1 - 5 us

1.85

TBA

Yes

CLYC

3.31

370

1 ns, 50 ns, 1000 ns

1.81

TBA

Yes

NaI(Tl)

3.67

415

0.23 us

1.85

100

Yes

CsI(Tl)

4.51

550

0.6 / 3.4 us

1.79

45

No

CsI(Na)

4.51

420

0.63 us

1.84

85

Slightly

CsI(Undoped)

4.51

315

16 ns

1.95

4 - 6

No

BGO

7.13

480

0.3 us

2.15

15 - 20

No

YAP(Ce)

5.55

350

27 ns

1.94

35 - 40

No

CaF2(Eu)

3.18

435

0.84 us

1.47

50

No

LaCI3:Ce

3.79

350

70 ns

1.56

95 - 100

Yes

6Li-Glass

2.6

390 / 430

60 ns

1.56

4 – 6

No

6Li-(Eu)

4.08

470

1.4 us

1.96

35

Yes

BaF2

4.88

315 / 220

0.63 us / 0.8 ns

1.50 / 1.54

16 / 5

Slightly

LYSO:Ce

7.20

420

50 ns

1.82

70 - 80

No

CdWO4

7.90

470 / 540

20/5 us

2.3

25 - 30

No

PbWO4

8.28

420

7 ns

2.16

0.20

No

Plastics

1.023

375 - 600

ns range

1.58

25 - 30

No

* 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 Bi-Alkali photocathode PMT.

Accessories  

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

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

 

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