Korth Kristalle GmbH

Refractive Index

 
 

Sodium Fluoride (

NaF

)

Eigenschaften (NaF)   
Transmission Range (50% of total transmission)   0,13 - 13 µm (thickness 1 mm)  
Refractive Index   1,324535 @633nm  
Reflective Loss   1,15 % @10 µm  
Reststrahlen   34 µm  
Density   2.79 g/cm3  
Melting Point   996°C  
Molecular Weight   42.0  
Thermal Conductivity   22 W/(m·K) @250K 
Heat Capacity   1088 J/(kg·K) @0°C  
Thermal Expansion   36 · 10-6 /K @298K 
Hardness (Mohs)   60  
Young`s Modulus   76 GPa  
Shear Modulus   30.7 GPa  
Bulk Modulus   48,5 GPa  
Rupture Modulus    
Elastic Coefficient   C11 = 97; C12 = 24.2; C44 = 28.1 GPa  
Dielectric Constant   6,0 @f = 2 MHz @292K 
Solubility in Water   4,13 g/100g  
Crystal Structure   single crystal, synthetic  
Crystal Type  cubic, NaCl type structure, a0 = 4.62 Å  
Cleavage Planes   (100)  
Poisson Ratio   0.24  
Application   Cherenkov-counter, AR coating material  
Remarks   very low refractive index, unsoluble in ethanol  

Transmission spectrum

NAF 1MM HOMEPAGE ENGL.JPG

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