Comparison of Electron-Ion Recombination and Gas-Dynamic Expansion Rates in Freely Expanding Helium and Argon Plasmas
Abstract
Equations coupling the collisional-radiative recombination and gas- dynamic phenomena for the centerline of the freely expanding plume of an argon and helium arcjet are developed and solved for the free electron density. The results of these calculations are used to ascertain the time rates of change of the free electron density attributable to the recombination and gas-dynamic processes separately. Experimental data are presented which support the conclusions drawn from the analytical results. Therefore, based on these results, a more detailed approach than the collisional-radiative recombination model is necessary for the correct description of recombination mechanisms in the rapidly changing environment of the expanding arcjet plume.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1976
- Accession Number
- ADA021958
Entities
People
- C. C. Limbaugh
- L. H. Malone
Organizations
- Arnold Engineering Development Complex