Korth Kristalle GmbH

Refractive Index


Sodium Iodide (NaI)

Properties (NaI)    
Transmission Range  (10% of total transmission)  0.26- 24 µm (thickness 1mm)  
Refractive Index   1,76807 @633 nm
Reflective Loss ( 1 surface)   7,7% @0,633 µm  
Density   3,67g/cm3  
Melting Point   661,4°C  
Molecular Weight   149,89 
Thermal Conductivity   4,7/(m·K) @500K  
Heat Capacity  347J/(kg·K) 
Thermal Expansion   45 · 10-6/K (285K)  
Hardness (Mohs)   2   
Young`s Modulus   9,7 GPa
Shear Modulus   8,4 GPa  
Bulk Modulus   16,1 GPa  
Rupture Modulus     
Elastic Coefficient   C11 = 30 ; C12 = 9 ; C44 = 7,36GPa  
Dielectric Constant   7,28@ (298K) 
Poisson Ratio 0,28
Solubility in Water   184g/100g @25°C 
Crystal Structure   Single crystal, synthetic  
Crystal Type   cubic, NaCl type structure, a=6,46 Å  
Cleavage Planes   {100}  
Application   scintillator
Remarks   mainly Tl-doped, hygroscopic

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