## Optical constants of Ar (Argon)

Grace et al 2017: Liquid at 83.81 K; n 0.117–0.660 µm

Wavelength:
µm

(0.117–0.66)

### Complex refractive index (*n+ik)*

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=0.24+\frac{0.27λ^2}{λ^2-0.1066^2}+\frac{0.00047λ^2}{λ^2-0.9083^2}$$### Conditions & Spec sheet

temperature: 83.81 K

### Comments

Liquid argon at 83.81 K (-189.34 °C, melting point).

### References

E. Grace, A. Butcher, J. Monroe, J. A. Nikkel. Index of refraction, Rayleigh scattering length, and Sellmeier coefficients in solid and liquid argon and xenon, *Nucl. Instr. Meth. Phys. Res. A* **867**, 204-208 (2017)