RESEARCH ON RADIATION FROM ARC HEATED PLASMA.
Abstract
Spectral continuum intensity measurements from 2500 A to 20,000 A and total radiation measurements were made for oxygen and nitrogen plasmas for a temperature range of 9000 K to 13,000 K using a mechanically constricted dc arc as a radiation source. The spectral data were treated analytically to separate the radiation from electron neutral atom and electron positive ion collisions. The electron neutral data were further reduced to radiative cross sections which are in turn compared with the results of other experimental investigations and with theoretical predictions. The spectral continuum data were integrated to find the total continuum for lambda > 2000 A. These data were subtracted from the total radiation measurements lambda > 2000 A to obtain the contribution from line radiation. These data are compared with analytical predictions for atomic line radiation and found to be in good agreement. Radiation tables were generated, based upon these experimental data, for the total continuum plus atomic line radiation for wavelengths greater than 2000 A and for the total continuum plus total atomic line radiation for all wavelengths for temperatures ranging from 9000 K to 18,000 K and for pressures from 0.1 to 10.0 atmospheres. These data are also presented in terms of flight velocity. These data are compared with reported values gathered from shock tube and ballistic range work. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 09, 1965
- Accession Number
- AD0622391
Entities
People
- J. C. Morris
- R. U. Krey
- R. W. Liebermann