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April 27, 2021
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CsI(Na) Scintillator

Advantage

1.High Gamma ray stopping power

2.High density and atomic number

3.Well-suited for well logging, space research and other harsh environment applications

4.High energy resolution

5.Energy spectrum analysis

6.Match PMT well

Description

  • CsI(Na) is another widely used material nowadays. It’s High light output (85% of NaI(TI)), emission in the blue spectral region (in coincidence with the maximum sensitivity range of the most popular PMT with bialkali photocathodes). Lower hygroscopicity in comparison with NaI(TI) to make this material alternative for NaI(TI) in many standard applications. The temperature dependence of light output can be 80°C max. The decay time of CsI(Na) depends on the dopant concentration, it’s an excellent material in oil logging industry.

     

    Properties:

     

    Densityg/cm3

    4.51

    Melting Point (K)

    894

    Thermal Expansion Coefficient(K-1)

    54 x 10-6

    Cleavage Plane

    None

    Hardness (Mho)

    2

    Hygroscopic

    Yes

    Wavelength of Emission Maximum(nm)

    420

    Lower Wavelength Cutoff (nm)

    300

    Refractive Index at Emission Maximum

    1.84

    Primary Decay Time (ns)

    630

    Light Yield (photons/keV)

    38-44

    Photoelectron Yield [% of NaI(Tl)] (for γ-rays)

    85

     

     

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