Accession Number:

AD0739524

Title:

Studies of Excited Hydrogen in Relation to Advanced Propulsion.

Descriptive Note:

Final rept. 16 Mar 69-15 Mar 72,

Corporate Author:

TETRA TECH INC PASADENA CALIF

Personal Author(s):

Report Date:

1972-03-01

Pagination or Media Count:

29.0

Abstract:

The report summarizes the results of research on the kinetic and energetic behavior of vibrationally excited hydrogen molecules. Excited hydrogen was generated in a microwave discharge in a low-pressure flow system. A detection method for the vibrationally excited hydrogen was developed in which gaseous hydrogen cyanide is injected into the hydrogen stream and becomes vibrationally excited through collisions with the excited hydorgen molecules the excited HCN then emits infrared radiation at 3.0 microns. The kinetic results indicate that the most important relaxation mechanism of the vibrationally excited hydrogen is by reaction with hydrogen atoms. An automated catalytic isothermal calorimeter with direct read-out was developed for detection of the excited species. Hydrogen-atom concentrations were determined successfully. Author

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE