NaI (Tl) Scintillation Crystal Description:
NaI(Tl) scintillation crystal is widely recognised as a viable substitute for single-crystal scintillators in applications subject to thermal and mechanical shocks. NaI(Tl) scintillation crystal is a recently developed material that provides durability and exhibits a scintillation performance equal to that of single crystalline NaI(Tl). Current applications include aerospace research, oil drilling for geophysical surveys and radiation environmental monitoring.
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NaI(Tl) Scintillation Crystal Advantages:
- High light yield
- No significant self-absorption of scintillation light
- Emission spectrum aligned with the sensitivity curve of photomultiplier tubes (PMTs) with bialkali photocathodes
- Available in both single crystalline and polycrystalline forms
NaI (Tl) Scintillation Crystal Specifications:
Density (g/cm³)
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3.67
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Melting Point (K)
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924
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Thermal Expansion Coefficient (°C⁻¹)
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47.7 x 10-6
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Cleavage Plane
|
<100>
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Hardness (Mohs)
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2
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Hygroscopic
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Yes
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Maximum Emission Wavelength (nm)
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415
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Refractive Index at Emission Maximum
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1.85
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Primary Decay Time (ns)
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250
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Light Yield (Photons/keVγ)
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38
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Temperature Coefficient of Light Yield
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0.3% °C⁻¹
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NaI (Tl) Scintillation Crystal Applications:
- Environmental monitoring
- Oil and gas exploration – borehole logging
- Nuclear physics
- Industry – thickness or density measurement, coal/mineral analysis