Accession Number : AD0776077

Title :   Deexcitation of Metastables at Plasma Boundaries.

Descriptive Note : Final technical rept. 1 Jun 72-1 Nov 73,


Personal Author(s) : Black,Graham ; Wise,Henry ; Schechter,Samuel ; Sharpless,Robert

Report Date : DEC 1973

Pagination or Media Count : 58

Abstract : Wall deexcitation of N2 (v=1) was studied on a variety of different surfaces, using 4880 A laser radiation, the authors used the intensity of the anti-Stokes Raman scattering at 4382 A to monitor the N2 (v=1) concentrations. The two-dimensional diffusion equation with Poiseuille flow was solved to interpret the results. The lowest values of the deactivation coefficient were recorded for quartz and Pyrex after 24 hours of exposure to the microwave afterglow. The results allow some conclusions to be made concerning the mechanism of vibrational deexcitation on walls. (Modified author abstract)

Descriptors :   *Nitrogen, *Gas lasers, Raman spectroscopy, Surface properties, Metastable state, Molecular vibration, Molecular energy levels, Particles, Walls, Energy transfer, Diffusion

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE