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NaI(Tl) Scintillators

NaI(Tl) sodium iodide crystal scintillator is a kind of traditional inorganic scintillator with excellent properties. The emission wavelength of NaI(Tl) crystal is 415nm, which can be well matched to photomultiplier tubes (PMTs) with bialkali photocathodes. It has high luminous efficiency, good resolution to both X-ray and gamma-ray, and is less affected by temperature. With its excellent performance and low cost, NaI(Tl) crystals are widely used in radiation detection: nuclear medicine, environmental monitoring, nuclear physics, aerial surveying, well logging and many other applications.


OST Photonics ia able to supply the encapsulated NaI(Tl) scintillators, high temperature NaI(Tl) scintillators and NaI(Tl) scintillation detectors in various of designs and specifications. Our products are widely used in radiation detection: nuclear medicine, environmental monitoring, nuclear physics, aerial surveying, well logging and many other applications.


Application of NaI(Tl) Scintillators (NaI:Tl Scintillators)


  • Nuclear medicine

  • Environmental monitoring

  • Nuclear physics

  • Aerial surveying

  • Well logging


Advantages of NaI(Tl) Scintillators (NaI:Tl Scintillators)


  • Good energy resolution

  • High light output

  • Emission spectrum well matched with the sensitivity curve of photomultiplier tubes (PMTs) with bialkali photocathodes

  • High luminous efficiency

  • Less affected by temperature


The Ability of OST Photonics


  • Maximum Size: 160mm x 200mm x 500mm

  • Available items: encapsulated scintillator, high temperature encapsulated scintillator, scintillation detector

  • Different encapsulation designs: general cylindrical NaI(Tl) scintillator, rectangular NaI(Tl) scintillator, end-well type NaI(Tl) scintillator, side-well type NaI(Tl) scintillator, thin disk type NaI(Tl) scintillator (for low-energy and X-ray detection) and so on.

  • Typical size: 1" diameter x 1" thick, 2" diameter x 2" thick, 3" diameter x 3" thick, 5" diameter X 5" thick, 2"x4"x16", 4"x4"x16

  • Different encapsulation material options: metal shell(Aluminum, Stainless steel, Titanium alloy), optical output window(K9 glass window, Quartz window, Sapphire window), radiation entrance window(Beryllium entrance window, Aluminum entrance window).


High-Temperature NaI(Tl) Scintillators


  • For oil logging applications, NaI(TI) scintillator works underground, it must withstand high temperatures above 150℃, certain

    shock, and vibration. The high-temperature NaI(TI) scintillators are encapsulated from high-temperature forged NaI(Tl) polycrystals

    and special high-temperature resistant materials through reliable encapsulation technology. The working temperature range is

    from -30℃to 175℃. It has excellent mechanical shock resistance, temperature shock resistance, and a long lifetime. The drilling

    NaI(Tl) scintillator can work at 175°C and 30g strong vibration.



Types

Logging while drilling

Conventional logging

Purpose

Density while drilling

Natural gamma count while drilling


Conventional density



Natural gamma count

Encapsulation

Sapphire output window + Titanium alloy shell + Hot-forged polycrystals

Sintering output window + Stainless steel shell + Hot-forged polycrystals

Energy resolution (For 137Cs) (%)

PHR(25℃): ≤12

PHR(175℃): ≤16

PHR(25℃): ≤15
PHR(175℃): ≤20

PHR(25℃): ≤12
PHR(175℃): ≤16

PHR(25℃): ≤15
PHR(175℃): ≤20



Properties of NaI(Tl) Scintillators


Light yield (photoelectron /MeV)

38000

Scintillation Decay Time (ns)

250

Emission Peak Wavelength (nm)

415

Refractive Index (peak wavelength)

1.85

Density(g/cm3)

3.67

Hygroscopic

Yes

Mohs hardness

2

Afterglow

0.3~5%@6ms

Radiation length (cm)

2.59

Cleavage plane

<100>

Coefficient of thermal expansion (℃^-1)

4.74×10^-5

Molecular weight

149.9

Melting point (℃)

651


Contact Us
Welcome your presence, you can send us an email, we will get in touch with you within 24 hours.
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460