IONIZATION, FRAGMENTATION AND ION-MOLECULE REACTIONS OF NH3 AFTER ION IMPACT,

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Abstract:

Mass spectra of ammonia NH3 were obtained after charge exchange with slow positive ions. The intensities of the peaks were plotted as a function of the energy absorbed by the molecule during the charge exchange. Two regions with very low probability for ionization exist between 12.5 and 15 eV and around 21 eV. Integration of the breakdown graph gives a mass spectrum in agreement with that obtained in electron impact. The ion-molecule reactions were studied using the pressure dependence of the ion-currents in the pressure range mm Hg. The order and mechanisms of the formation of the product ions are determined at different energies absorbed by the molecule during the charge exchange. The structure and dissociation of ammonia are discussed. Author

Author(s):
Sahlstrom, G. ; Szabo, I.
Author Organization(s):
ROYAL INST OF TECH STOCKHOLM (SWEDEN) DEPT OF PHYSICS
Supplementary Note:
See also Scientific-7, AD-637 661.
Annotation:
Reprint: Ionization, fragmentation and ion-molecule reactions of NH3 after ion impact.
Pagination:
0029

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
Scientific-9, AFCRL-68-0075
Contract/Grant Number(s):
AF 61(052)-762
Task Number(s):
763504
Project Number(s):
AF-7635
Monitor Series:
68-0075
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*AMMONIA, *ION BOMBARDMENT), MASS SPECTRA, GAS IONIZATION, DISSOCIATION, EXCHANGE REACTIONS, PROBABILITY, MOLECULAR STRUCTURE, IONIC CURRENT, SWEDEN
Field(s)/Group(s):
Atmospheric Physics, Atomic and Molecular Physics and Spectroscopy
Keyword(s):
*IONS, *MOLECULES
Report Date:
1967 Aug 31