Penning and associative ionization in crossed-beam Na/Na collisions assisted by strong resonant laser fields

Journal Article · Wed Dec 31 23:00:00 EST 1980 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.440858· OSTI ID:7093773

Weiner, J; Polak-Dingels, P

We observe the production of Na/sub 2//sup +/ and Na/sup +/ arising from single collisions between crossed beams of sodium atoms when a laser field is tuned near the Na(3p /sup 2/P/sub 3/2/) and Na(3p /sup 2/P/sub 1/2/) transitions. Measurements of ion intensity vs laser intensity show that at moderately high power true laser-induced processes dominate over purely collisional effects. Relative intensity of mass-selected ions produced at either member of the Na resonance doublet shows conclusively that Na/sup +/ does not arise simply from photodissociation of Na/sub 2//sup +/ but must result from a direct, laser-induced collisional ionization.

• Research Organization: Department of Chemistry, University of Maryland, College Park, Maryland 20742
• OSTI ID: 7093773
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 74:1; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
COLLIDING BEAMS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
IONIZATION
LASER RADIATION
METALS
PENNING EFFECT
RADIATIONS
SODIUM