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Products › Materials › Caesium Bromide (CsBr)
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Caesium Bromide (CsBr) |
| Caesium Bromide has limited application in the deep IR. Caesium Bromide is slightly more amenable to optical working than CsI and is sometimes used as a beamsplitter component in wide-band spectrophotometers |
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Product Data |
| Transmission Range : |
0.25 to 40 μm (1) |
| Refractive Index : |
1.6612 at 11 μm (1) |
| Reflection Loss : |
11.6% at 11 μm (2 surfaces) |
| Absorption Coefficient : |
n/a |
| Reststrahlen Peak : |
121.2 μm (2) |
| dn/dT : |
+79 x 10-6/°C at 0.6 μm |
| dn/dμ = 0 : |
5.3 μm |
| Density : |
4.44 g/cc |
| Melting Point : |
636 °C |
| Thermal Conductivity : |
0.94 W m-1 K-1 at 273K |
| Thermal Expansion : |
47.9 x 10-6 /°C at 273K |
| Hardness : |
Knoop 19.5 with 200g indenter |
| Specific Heat Capacity : |
263.8 J Kg-1 K-1 (3) |
| Dielectric Constant : |
6.51 at 2 MHz |
| Youngs Modulus (E) : |
15.85 GPa (4) |
| Shear Modulus (G) : |
7.5 GPa |
| Bulk Modulus (K) : |
13.01 GPa |
| Elastic Coefficients : |
C11=30.97; C12=4.03; C44=7.5 |
| Apparent Elastic Limit : |
8.4 MPa (1220 psi) (4) |
| Poisson Ratio : |
0.279 |
| Solubility : |
124.3g/100g water at 273K |
| Molecular Weight : |
212.83 |
| Class/Structure : |
Cubic CsCl, Pm3m, no cleavage planes |
To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page. To expand the transmission graphs, please click on the image.
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Refractive Index |
| µm |
No |
µm |
No |
µm |
No |
| 0.5 |
1.70896 |
1.0 |
1.67793 |
2.0 |
1.67061 |
| 3.0 |
1.66901 |
4.0 |
1.66813 |
5.0 |
1.66737 |
| 6.0 |
1.66659 |
7.0 |
1.66573 |
8.0 |
6477 |
| 9.0 |
1.6637 |
10.0 |
1.66251 |
11.0 |
1.6612 |
| 12.0 |
1.65976 |
13.0 |
1.6582 |
14.0 |
1.6561 |
| 15.0 |
1.65468 |
16.0 |
1.65272 |
17.0 |
1.65062 |
| 18.0 |
1.64838 |
19.0 |
1.646 |
20.0 |
1.64348 |
| 21.0 |
1.6408 |
22.0 |
1.63798 |
23.0 |
1.635 |
| 25.0 |
1.62856 |
26.0 |
1.62509 |
27.0 |
1.62146 |
| 28.0 |
1.61764 |
29.0 |
1.61365 |
30.0 |
1.60947 |
| 31.0 |
1.6051 |
32.0 |
1.60053 |
33.0 |
1.59576 |
| 34.0 |
1.59078 |
35.0 |
1.58558 |
36.0 |
1.58016 |
| 37.0 |
1.5745 |
38.0 |
1.5686 |
39.0 |
1.56245 |
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Product Notes |
Caesium Bromide is grown by sealed ampoule Stockbarger technique. CsBr is a soft pliable material.
REFERENCES:
(1) Handbook Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
(2) Mitsuishi et al., J Opt Soc. Am. V52, p14, 1962
(3) Kelly, Bureau of Mines Bulletin, No371, p51, 1934
(4) S.Ballard et al; J.Opt.Soc.Am. Vol42, p684, 1952
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Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, Crystran Ltd accept no responsibility for accuracy of data |
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