Sodium Fluoride

(

NaF

)
Eigenschaften 
Transmission Range

0.13 - 13 µm (thickness 1 mm)

Refractive Index

1.324535 @633nm

Reflection Loss 

1.15 % @10 µm

Residual Beam Wavelength  

34 µm

Density  

2.79 g/cm3

Melting point  

996°C

Molecular Weight 

42.0

Thermal Conductivity  

22 W/(m·K) @250K

Spec. Heat Capacity  

1088 J/(kg·K) @0°C

Thermal Expansion  

36 · 10-6 /K @298K

Hardness (Mohs) 

60 <100>

Young's Modulus 

76 GPa

Shear Modulus 

30.7 GPa

Bulk Modulus  

48.5 GPa

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 

Cleavage Planes 

(100)

Poisson Ratio  

0.24

Application  

Cherenkov-counter, AR coating material

Remarks  

very low refractive index, unsoluble in ethanol

Remarkable 
  • Has the lowest refractive index of all known optical materials
  • Application as a Cherenkov counter for the detection and differentiation of particles
  • The maximum diameter of our optics is 190 mm

 

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.

Sodium Fluoride: 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

  • Has the lowest refractive index of all known optical materials
  • Application as a Cherenkov counter for the detection and differentiation of particles
  • The maximum diameter of our optics is 190 mm