Refractive index database

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Optical constants of Xe (Xenon)
Sinnock and Smith 1969: Solid at 140 K; n 0.361–0.644 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

temperature: 140 K


Solid xenon at 140 K (-133.15 °C).


A. C. Sinnock and B. L. Smith. Refractive indices of the condensed inert gases, Phys. Rev. 181, 1297-1307 (1969)


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Xenon, Xe

Xenon (Xe) is a noble gas that exists as a colorless, dense, odorless gas under standard conditions. It's one of the rare gases found in the Earth's atmosphere, representing only a tiny fraction of the air we breathe. Due to its heavy atomic weight and low reactivity, xenon is often used in specialized lighting, including powerful flash lamps, high-intensity arc-lamps, and as the propellant in ion engines for deep space missions. In medicine, xenon has been explored as an anesthetic and in imaging. Its isotopes also find use in various applications, such as the detection of neutrinos in particle physics experiments. Xenon can form compounds, albeit rarely, with highly electronegative elements like fluorine.

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