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碘化铯 Caesium Iodide (CsI)


Crystallographic


Syngony

Cubic

Symmetry Class

m3m Pm3m

Lattice Constants

a = 4.567 Å


Optical


Refractive Index at n10.0

1.740

Refractive Index at n40.0

1.678

Thermal Coefficient of Refractive Index for 0-30℃

(-1.27) ... (-1.51) x 10-5

Transmission Range, microns

0.25 - 55

Absorbance μ (λ) , cm -1


at 40 microns

0.1

at 45 microns

0.33

at 50 microns

0.5


Thermal


Thermal Linear Expansion, ℃-1

for 0-30 ℃

48.1 x 10-6

Thermal Conductivity, W/(m * ℃)

at 25 ℃

1.1

Specific Heat Capacity, J/(kg * ℃)

200

Melting Point, ℃

621


Mechanical


Density, g/cm3

4.509

Mohs Hardness

1-2

Young Modulus (E), Pa

2 x 109

Shear Modulus (G), Pa

6.24 x 109

Poisson Ratio

0.214


Chemical


Molecular Weight

259.81

Solubility


in water, gram/100 cm3

44

in acids

soluble


Ref. Index vs. Wavelength λ


Wavelength, Microns

Refractive Index

0.25

2.210

0.5

1.807

1.0

1.758

2.0

1.747

3.0

1.744

5.0

1.743

10.0

1.740

15.0

1.735

20.0

1.728

25.0

1.719

30.0

1.708

35.0

1.695

40.0

1.678

45.0

1.659

50.0

1.637

55.0

1.611


Custom sizes and specifications are available on request.


 

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