SOME THEORETICAL BASES FOR SELECTION OF MOLECULAR ION PROPELLANTS AND A SURVEY OF MOLECULAR PLASMA COLLISION PROCESSES
Technical Report
·
OSTI ID:4114760
The arrangement of electronic and vibrational energy states in diatomic and polyatomic molecules is described as a background for discussing dissociation by impact. The behavior of polyatomic systems under electron impact in the bombardment thrustor is explained in terms of the chemical-bonding characteristics of various classes of molecules. Fragmentation is a consequence of electronmolecule collisions and is discussed with methods for calculating ionization cross sections. Secondary discharge processes affect the composition of the ion beam; their relative rates are estimated. Approaches to griding selection of suitable molecular propellants are outlined. A useful quantum- mechanical method for predicting stability of presently unavailable compounds is explained, and fundamental experiments are suggested. 42 references. (auth)
- Research Organization:
- National Aeronautics and Space Administration. Lewis Research Center, Cleveland
- NSA Number:
- NSA-18-012284
- OSTI ID:
- 4114760
- Report Number(s):
- NASA-TN-D-1185
- Country of Publication:
- United States
- Language:
- English
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