纯碘化铯，Caesium Iodide (CsI)
纯碘化铯晶体是一种具有快衰减闪烁特性的新型辐射探测材料, 纯碘化铯快发光的衰减时间是2-3ns和约30ns，在伽马射线、中子和其它辐射探测技术中有重要的应用前景。此外，该晶体的红外透过范围宽，也可用作红外光学器件。
Properties
Value
Apparent Elastic Limit (MPa)
5.6 (810psi)
Bulk Modulus (K) (GPa)
12.67
Cleavage Planes
None
Decay (µs)
0.03 & 0.1
Density (g.cm-3)
4.51
Dielectric Constant
5.65 at 1MHz
Elastic Coefficient C11
24.6
Elastic Coefficient C12
6.7
Elastic Coefficient C44
6.24
Emission Spectral Range (nm)
250 to 500
Hardness (knoop) (100) direction
20.0
Melting Point (°C)
621
Molecular Weight
259.83
Peak Scintillation Wavelength (nm)
230
Photons/MeV
16,800
Poisson Ratio
0.214
Radiation Length (cm)
1.86
Reflection Loss (%)
13.6 at 11µ (2 surfaces)
Refractive Index
1.78 at 10µ
Shear Modulus (G) (GPa)
6.24
Solubility (g/100g H2O)
44.0 at 273K
Specific Heat Capacity (J·kg·m-1·K-1)
201
Structure
Cubic
Thermal Coefficient of Light Output (%·K-1)
18.85 X 10-6
Thermal Conductivity (W·m-1·K-1)
1.1 at 298K
Thermal Expansion (K-1)
48.3 X 10-6 at 293K
Transmission Range (µ)
0.25 at 55.0
Youngs Modulus (E) (GPa)
5.3