Chemi-ionization in the metastable neon--metastable argon system

Journal Article · Sun Jun 01 04:00:00 EDT 1980 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.439076· OSTI ID:5405921

Neynaber, R N; Tang, S Y

Studies were made by a merging-beams technique of the associative ionization (AI) reaction (1) Ne/sup asterisk/+Ar/sup asterisk/..-->..NeAr/sup +/+e and the Penning ionization (PI) reactions (2) Ne/sup asterisk/+Ar/sup asterisk/..-->..Ne+Ar/sup +/+e and (3) Ne/sup asterisk/+Ar/sup asterisk/..-->..Ne/sup +/+Ar+e. The relative kinetic energy of the reactants was varied from 0.01 to 10 eV. The Ne/sup asterisk/ and Ar/sup asterisk/ each represents a composite of the metastable /sup 0/P/sub 2,0/ states. There is a complication in the present investigation which arises because AI and PI occur in collisions of Ne/sup asterisk/ with ground-state Ar. Since the reactant beams consist of metastable as well as ground-state species, the measurements are composites of chemi-ionization in both the Ne/sup asterisk/--Ar/sup asterisk/ and Ne/sup asterisk/--Ar systems. Information on AI and PI for the Ne/sup asterisk/--Ar/sup asterisk/ system is obtained by subtracting from these composite measurements known contributions of the Ne/sup asterisk/--Ar system. From such information it appears that the molecular states of the reactants are different for reactions (2) and (3).

• Research Organization: IRT Corporation, San Diego, California 92138
• OSTI ID: 5405921
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 72:11; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
CHEMICAL REACTIONS
COLLISIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
IONIZATION
METASTABLE STATES
NEON
NONMETALS
PENNING EFFECT
RARE GASES