Caesium Iodide

(

CsI

)
Eigenschaften 
Transmission Range

0.25 - 55 µm (thickness  2 / 1 mm) 

Refractive Index

1.780557 @633 nm  

Reflection Loss 

7.28% @10 µm 

Residual Beam Wavelength  

145.8 µm, 118 µm  

Density  

4.5 g/cm3 

Melting point  

627°C  

Molecular Weight 

259.83 

Thermal Conductivity  

1.1 W/(m·K) @298K  

Spec. Heat Capacity  

201 J/(kg·K) @20°C  

Thermal Expansion  

50 · 10-6/K (@298...323K)  

Hardness (Mohs) 

20 

Young's Modulus 

5.3 GPa 

Shear Modulus 

7.3 GPa 

Bulk Modulus  

12.67 GPa 

Fracture Modulus 

5.6 MPa 

Elastic Coefficient 

C11 = 24.5; C12 = 6.6; C44 = 6.31 GPa 

Dielectric Constant

5.65 @298K, f = 1 MHz  

Solubility in Water 

84.8g /100g@25°C  

Crystal Structure  

Single crystal, synthetic

Crystal Type  

Cubic, CsCl type structure, a = 4.5679 Å

Cleavage Planes 

No Cleavage 

Poisson Ratio  

0.26

Application  

undoped CsI for IR spectroscopy, Cs:Tl and CsI:Na as scintillator material 

Remarks  

Material is very soft, difficult to polish and sensitive in combination with humidity. Soluble in weak alcohol (ethanol, methanol, aceton), max. temperature for application: 200°C.

Remarkable 
  • Good transmission up to FIR range (55 µm)
  • Application as an FTIR beam splitter
  • A diameter of 90 mm is the maximum size of our optics
  • Can also be endowed (Tl)
  • Usage as a scintillator
NOTE: Despite careful research, we do not accept any liability for the correctness of the information provided. Liability claims based on the use of the information are excluded in principle.

Caesium Iodide: Korth Kristalle - Vom Rohkristall zur hochpräzisen Optik. Durchblick für alle Wellenlängen - Seit 72 Jahren züchten wir Kristalle und fertigen daraus hochpräzise optische Komponenten für alle Wellenlängen vom IR- bis zum VUV-Bereich. Unsere Produkte kommen in allen Bereichen zum Einsatz, in denen eine hochentwickelte, präzise technische Ausstattung unerlässlich ist – von der Analytik bis hin zur Medizin- und Raumfahrttechnik.

Contact/Inquiry

Korth Kristalle

Am Jägersberg 3
24161 Altenholz

+49 (0)431 - 36 90 50
+49 (0)431 - 36 90 525

info@korth.de


Contact

Remarkable

  • Good transmission up to FIR range (55 µm)
  • Application as an FTIR beam splitter
  • A diameter of 90 mm is the maximum size of our optics
  • Can also be endowed (Tl)
  • Usage as a scintillator