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Accession Number:
AD0607204
Title:
BACKGROUND AND SAMPLING EFFECTS IN FREE JET STUDIES BY MOLECULAR BEAM MEASUREMENTS,
Corporate Author:
VIRGINIA UNIV CHARLOTTESVILLE
Report Date:
1964-09-01
Abstract:
The effects of finite background pressures on free supersonic jets from sonic nozzles were investigated. It was found that at sufficiently low jet densities, which were characterized in terms of nozzle Knudsen number, axial distance and background pressure level, the background gas freely invades the jet flow field. This invasion results in substantial scattering of the jet molecules with the consequence that molecular beams extracted from such jets suffer a marked attenuation of their intensity. Some possible implications with respect to previously observed species separation are discussed. Author
Descriptive Note:
Technical rept.,
Supplementary Note:
Subcontracted to Princeton Univ., N. J. Presented at the International Symposium (4th) on Rarefied Gas Dynamics, Univ. of Toronto, 14-17 Jul 64.
Pages:
0008
Contract Number:
Nonr3623 00
File Size:
0.00MB
