Velocity dependence of sensitized fluorescence in collisions of metastable argon and helium atoms with nitrogen

Journal Article · Fri Oct 01 00:00:00 EDT 1976 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.433413· OSTI ID:7265090

Sanders, R A; Schweid, A N; Weiss, M; Muschlitz, Jr, E E

The interactions of metastable argon and helium atoms with nitrogen have been studied by observation of the fluorescence of electronically excited N/sub 2/ and N/sub 2//sup +/. An effusive, velocity filtered, metastable atom beam intersects a supersonic nozzle beam of nitrogen seeded with helium to extend the relative energy range. The nozzle beam is modulated and the photon signal is extracted from background using a dual-channel photon counter. Relative cross sections for the production of N/sub 2/(C /sup 3/Pi/sub u/) in metastable argon--nitrogen collisions are reported over the energy range 0.06 to 0.36 eV. Cross sections for the production of N/sub 2//sup +/(B /sup 2/..sigma../sub u//sup +/) in metastable helium--nitrogen collisions are reported over the energy range 0.03 to 0.16 eV. (AIP)

• Research Organization: Department of Chemistry, University of Florida, Gainesville, Florida 32611
• OSTI ID: 7265090
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:7; 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-MOLECULE COLLISIONS
ATOMIC BEAMS
BEAMS
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUID FLOW
FLUIDS
FLUORESCENCE
HELIUM
LUMINESCENCE
METASTABLE STATES
MOLECULE COLLISIONS
NITROGEN
NONMETALS
RARE GASES
SUPERSONIC FLOW