## Optical constants of Ar (Argon)

Bideau-Mehu et al. 1981: n 0.140–0.568 µm

Wavelength:
µm

(0.1404–0.5677)

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

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n-1=\frac{2.50141\text{×}10^{-3}}{91.012-λ^{-2}}+\frac{5.00283\text{×}10^{-4}}{87.892-λ^{-2}}+\frac{5.22343\text{×}10^{-2}}{214.02-λ^{-2}}$$### Conditions & Spec sheet

n_is_absolute: true temperature: 0 °C pressure: 101325 Pa

### Comments

Standard conditions. 0 °C, 760 torr (101.325 kPa).

### References

1) A. Bideau-Mehu, Y. Guern, R. Abjean, A. Johannin-Gilles. Measurement of refractive indices of neon, argon, krypton and xenon in the 253.7-140.4 nm wavelength range. Dispersion relations and estimated oscillator strengths of the resonance lines. *J. Quant. Spectrosc. Rad. Transfer* **25**, 395-402 (1981)

2) T. Larsén. Beitrag zur Dispersion der Edelgase. *Z. Physik* **88**, 389-394 (1934)^{*} Sellmeier formula is derived by the authors of ref. 1 using their own data in the 0.1404-0.2537 μm range combined with data from ref. 2 at longer wavelengths.