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Related papers: Refractive Index of Humid Air in the Infrared: Mod…

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Materials combining both a high refractive index and a wide band gap are of great interest for optoelectronic and sensor applications. However, these two properties are typically described by an inverse correlation with high refractive…

Laboratory results of the optical properties of vapor-deposited water ice, specifically the refractive index and extinction coefficient, are available mainly for a selective set of wavelengths and a limited number of deposition…

Instrumentation and Methods for Astrophysics · Physics 2022-02-09 Jiao He , Sharon J. M. Diamant , Siyu Wang , Haochuan Yu , Will R. M. Rocha , Marina Rachid , Harold Linnartz

We have obtained high resolution spectra (R = 25000) of an A star over varying airmass to determine the effectiveness of telluric removal in the limit of high signal to noise. The near infra-red line HeI at 2.058 microns, which is a…

Astrophysics · Physics 2015-06-24 M. A. Kenworthy , M. M. Hanson

The mixed quantum/classical approach of Skinner and co-workers has been widely used to calculate the line shapes of the infrared spectra of water (H2O), but less attention has been paid to the use of this approach in quantitatively…

Hot atomic vapors are widely used in non-linear and quantum optics due to their large Kerr non-linearity. While the linear refractive index and the transmission are precisely measured and well modeled theoretically, similar characterization…

Atmospheric regions below a refractive boundary are hidden in limb observations. Refraction thus creates a gray continuum in the planet's transmission spectrum which can hide spectral features associated with sources of atmospheric opacity.…

Earth and Planetary Astrophysics · Physics 2018-09-19 Yan Bétrémieux , Mark R. Swain

Using lattice simulations, we show that there is a phase of thermal QCD, where the spectral density $\rho(\lambda)$ of Dirac operator changes as $1/\lambda$ for the infrared eigenvalues $\lambda<T$. This behavior persists over the entire…

High Energy Physics - Lattice · Physics 2019-11-27 Andrei Alexandru , Ivan Horváth

The absorption by neutral hydrogen in the intergalactic medium (IGM) produces the Ly$\alpha$ forest in the spectra of quasars. The Ly$\alpha$ forest absorbers have a broad distribution of neutral hydrogen column density $N_{\rm HI}$ and…

Astrophysics of Galaxies · Physics 2023-04-05 Li Yang , Zheng Zheng , T. -S. Kim

Determining the electronic and dielectric properties of water at high pressure and temperature is an essential prerequisite to understand the physical and chemical properties of aqueous environments under supercritical conditions, e.g. in…

Materials Science · Physics 2014-08-07 Ding Pan , Quan Wan , Giulia Galli

Two choices are possible for the refractive index of a linear, homogeneous, isotropic, active, dielectric material. Either of the choices is adequate for obtaining frequency-domain solutions for (i) scattering by slabs, spheres, and other…

Optics · Physics 2009-11-13 Akhlesh Lakhtakia , Joseph B. Geddes , Tom G. Mackay

In the infrared and visible bandpass, optical propagation theory conventionally assumes that humidity does not contribute to the effects of atmospheric turbulence on optical beams. While this assumption may be reasonable for dry locations,…

Atmospheric and Oceanic Physics · Physics 2009-11-11 Mark P. J. L. Chang , Carlos O. Font , G. Charmaine Gilbreath , Eun Oh

Absorption spectra of liquid water at 300 K are calculated from both classical and density functional theory molecular dynamics simulation data, which together span from 1 MHz to hundreds of THz, agreeing well with experimental data…

Chemical Physics · Physics 2020-09-09 Shane Carlson , Florian N. Brünig , Philip Loche , Douwe Jan Bonthuis , Roland R. Netz

For accurate modelling of observations of exoplanet atmospheres, quantification of the pressure broadening of infrared absorption lines for and by a variety of gases at elevated temperatures is needed. High-resolution high-temperature…

Earth and Planetary Astrophysics · Physics 2019-10-23 Ehsan Gharib-Nezhad , Alan N. Heays , Hans A. Bechtel , James R. Lyons

Accurate and comprehensive H2 pressure-induced broadening data for CO2 infrared lines over a wide temperature range are essential for modeling atmospheric opacity of exoplanets. However, available data are currently limited, some of which…

Earth and Planetary Astrophysics · Physics 2026-05-13 Faten Hendaoui , Pascale Chelin , Xavier Landsheere , Hassen Aroui , Ha Tran

The accuracy of long distance measurement in air is limited by the fluctuation of refractive index. In this paper, we propose a technique which allows us to measure an absolute distance in air without the knowledge of air turbulence. The…

Instrumentation and Detectors · Physics 2016-11-21 Morris Cui , Steven A. van den Berg , Nandini Bhattacharya

Humidity and C_n^2 data collected from the Chesapeake Bay area during the 2003/2004 period have been analyzed. We demonstrate that there is an unequivocal correlation between the data during the same time periods, in the absence of solar…

Atmospheric and Oceanic Physics · Physics 2009-11-11 Carlos O. Font , Mark P. J. L. Chang , Eun Oh , Charmaine Gilbreath

The fact that infrared ring nebulae (IRRNs) are frequently associated with HII regions, provides us the opportunity to study dust at the interface between ionized and neutral gas. In this paper, we analyze the infrared radiation in the…

Astrophysics of Galaxies · Physics 2019-11-06 A. P. Topchieva , V. V. Akimkin , G. V. Smirnov-Pinchukov

A general expression is introduced for the tracer diffusivity in complex periodic energy landscapes with more than one distinct hop rate in two- and three-dimensional diluted systems (low coverage, single-tracer limit). For diffusion in two…

The real part of the refractive index (RI) of aqueous solutions of human hemoglobin is computed from their absorption spectra in the wavelength range $250\,{\rm nm} - 1100\,{\rm nm}$ using the Kramers-Kronig (KK) relations and the…

Biological Physics · Physics 2017-11-08 Jonas Gienger , Hermann Groß , Jörg Neukammer , Markus Bär

This paper presents a study of the effects of proton irradiation on iron corrosion. Since it is known that in humid atmospheres, iron corrosion is enhanced by the double influence of air and humidity, we studied the iron corrosion under…

Chemical Physics · Physics 2016-08-16 S. Lapuerta , N. Moncoffre , N. Millard-Pinard , H. Jaffrézic , N. Bérerd , D. Crusset