Accession Number:

AD0739143

Title:

Investigation of the Scattering of Gas Molecules on Various Surfaces,

Descriptive Note:

Corporate Author:

FORSCHUNGSINSTITUT FUER PHYSIK DER STRAHLANTRIEBE E B STUTTGART (WEST GERMANY)

Personal Author(s):

Report Date:

1963-01-01

Pagination or Media Count:

16.0

Abstract:

Reflections of molecular beams of air, N2, and Ar were measured on various synthetic coatings, nickel sheet and glass. A smooth silver layer was used for a reference surface. It was possible to measure the scattering distribution as a function of the incident angle on the sample surface and on the reference surface. The incomplete momentum transfer of gas particles colliding with the surface results in a decrease of frictional resistance, and must manifest itself in an increased forward scattering. Such a forward scattering was actually observed on the synthetic coatings. Author

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE