## Optical constants of Ar (Argon)

Grace et al 2017: Solid at 20 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

$$n^2-1=0.4+\frac{0.30λ^2}{λ^2-0.1066^2}+\frac{0.0011λ^2}{λ^2-0.9083^2}$$### Conditions & Spec sheet

temperature: 20 K

### Comments

Solid argon at 20 K (-253.15 °C).

### 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)