NDLI: Absolute rayleigh scattering cross sections of gases and freons of stratospheric interest in the visible and ultraviolet regions

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Absolute rayleigh scattering cross sections of gases and freons of stratospheric interest in the visible and ultraviolet regions

Content Provider	NASA Technical Reports Server (NTRS)
Author	Rao, A. D. P.
Copyright Year	1977
Description	The laboratory measurements of absolute Rayleigh scattering cross sections as a function wavelength are reported for gas molecules He, Ne, Ar, N2, H2, O2, CO2, CH4 and for vapors of most commonly used freons CCl2F2, CBrF3, CF4, and CHClf2. These cross sections are determined from the measurements of photon scattering at an angle of 54 deg 44 min which yield the absolute values independent of the value of normal depolarization ratios. The present results show that in the spectral range 6943-3638A deg, the values of the Rayleigh scattering cross section can be extrapolated from one wavelength to the other using 1/lambda (4) law without knowing the values of the polarizabilities. However, such an extrapolation can not be done in the region of shorter wavelengths.
File Size	1580354
Page Count	40
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19770012747
Archival Resource Key	ark:/13960/t14n4001v
Language	English
Publisher Date	1977-03-01
Access Restriction	Open
Subject Keyword	Geophysics Chlorofluoromethane Rayleigh Scattering Wavelengths Atmospheric Composition Polarized Radiation Molecular Gases Far Ultraviolet Radiation Scattering Cross Sections Freon Shardanand Air Pollution Laser Applications Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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