Relaxation of vibrationally excited nitrogen molecules on a silver and a Teflon surface
Abstract
Relaxation of vibrationally excited nitrogen on a surface of silver (a good catalyst) and of Teflon (chosen for its low adsorptivity) was measured in a jet vacuum device with microwave discharger and with CO2 as the titrating gas. Relative luminescence intensity was measured as a function of the contact time of vibrationally excited molecules with a silver surface. Least squares analysis yielded a value of 160 plus or minus 20 per sec for the effective relaxation constant. Although in the experiments conducted with Teflon and glass there was poor repeatability of the luminescence signal, it was found in all cases that the luminescence intensity was greater for relaxation on the Teflon surface than on glass, and the accomodation coefficient was probably lower for Teflon than for glass.
- Publication:
-
Akademiia Nauk SSSR Doklady
- Pub Date:
- December 1974
- Bibcode:
- 1974DoSSR.219.1400G
- Keywords:
-
- Molecular Oscillations;
- Molecular Relaxation;
- Nitrogen;
- Silver;
- Surface Reactions;
- Teflon (Trademark);
- Gas-Metal Interactions;
- Luminescence;
- Metal Surfaces;
- Molecular Excitation;
- Polymer Physics;
- Vibrational Spectra;
- Atomic and Molecular Physics