THE SUPERFICIAL RE-EMISSION LAW IN A FREE -MOLECULE FLOW.

Abstract

The object of the research is a study of the validity of the re-emission model. According to such a re-emission model, the re-emitted molecules behave as a gas in Maxwellian equilibrium, subject to a thermal agitation and moreover to a translation motion. The space distribution law is established for the molecules re-emitted from an elementary rectangular surface and from an indefinite strip of elementary thickness. The obtained theoretical results are then compared with Hurlbut's experimental results obtained by nitrogen molecular beams impinging on lithium fluoride crystals. The comparison allows one to establish the values of two fundamental parameters referred to the re-emitted gas. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1962
Accession Number
AD0631562

Entities

People

  • Silvio Nocilla

Organizations

  • Polytechnic University of Turin

Tags

DTIC Thesaurus Topics

  • Emission
  • Fluorides
  • Molecular Beams
  • Molecules
  • Nitrogen
  • Optical Materials
  • Thickness
  • Translations

Readers

  • Ballistic Missile Meteorology
  • Quantum Chemistry
  • Theoretical Analysis.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster