Monte Carlo Simulation of Negative Ion Collection by a Rocket-Borne Mass Spectrometer.
Abstract
The direct simulation Monte Carlo method developed for the prediction of positive ion collection by a rocket-borne probe has to be extended to simulate negative ion collection. It is found that realistic probe potentials can produce a high stagnation-point flux of negative ions while completely rejecting positive ions. However, this flux of negative ions is strongly attenuated by collisions at finite Knudsen numbers. Additionally, the necessary theory has been developed so that direct simulation of nonequilibrium chemistry in the ionosphere can be performed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1980
- Accession Number
- ADA091721
Entities
People
- R. D. Mcgregor
- Takashi Sugimura