Title :
Calculation of collision cross sections for atomic line broadening in the plume of the Space Shuttle main engine (SSME)
Author :
Dean, T.C. ; Ventrice, C.A.
Author_Institution :
Dept. of Electr. Eng., Tennessee Technol. Univ., Cookeville, TN, USA
Abstract :
An analytical method for determining the cross sections for collision line broadening by molecular perturbers is investigated using effective central force interaction potentials as proposed by Kunc. The Lennard-Jones potential is used throughout to describe the interatomic interactions. These cross sections are determined for several atomic species with H2, one of the principal constituents of the SSME plume environment, and compared with experimental data. Agreement with experimental data within the range of experimental error is obtained for most atomic species
Keywords :
Lennard-Jones potential; air pollution; atom-molecule collisions; space vehicles; spectral line broadening; H2; Lennard-Jones potential; Space Shuttle main engine; atomic line broadening; collision cross sections; effective central force interaction potentials; interatomic interaction; plume; Absorption; Atom optics; Atomic measurements; Crystallization; Engines; Frequency; Nonlinear optics; Space technology; Spectroscopy; Temperature dependence;
Conference_Titel :
Southeastcon '95. Visualize the Future., Proceedings., IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
0-7803-2642-3
DOI :
10.1109/SECON.1995.513112
