掺铊碘化钠，Thallium doped Sodium Iodide (NaI(Tl))
碘化钠（铊）闪烁体具有较高的能量转换效率和较好的能量分辨率，被广泛地用于X射线和γ射线的探测，可制成各种尺寸与形状的单晶或多晶。掺钠碘化铯晶体光输出接近掺铊碘化铯，但发光衰减较掺铊碘化铯短；发光主峰在420nm，与光电倍增管的光灵敏波段能很好地配合；晶体发光的温度效应好，特别适合高温环境和空间科学研究中使用。
Properties
Value
After Glow
Apx. 4.0% at 2ms
After Glow
Apx. 8.0% at 1ms
Cleavage Planes
(100)
Decay Constant (µs)
0.23
Density (g.cm-3)
3.70
Emission Spectral Range (nm)
325 to 525
Gamma and X-ray absorption coefficients (cm-1)
0.29 at 660keV
Gamma and X-ray absorption coefficients (cm-1)
5.5 at 100keV
Light Escape Cone to Air (°)
44.7
Light Escape Cone to Glass (°)
56.5
Light Escape from one face to Air (%)
8.4
Light Escape from one face to Glass (%)
22.4
Melting Point (°C)
651
Optical Transmission Range
250nm to 35µ
Peak Scintillation Wavelength (nm)
410
Photons/MeV
40,000
Radiation Length (cm)
2.59/td>
Refractive Index at peak emission
1.80
Soluble in Alcohol
Yes
Stability
Very Hygroscopic
Structure
BCC
Temperature Coefficient of Light Output (%·K-1)
+0.08
Thermal Conductivity (W·m-1·K-1)
3.47 at 298K
Water Solubility (g/100ml H2O)
159 at 273K
Youngs Modulus (GPa)
9.7