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Title: Production of Ba/sup +/ in a two-photon radiative collision in crossed Na-Ba beams

Abstract

We report the observation of a two-step radiative collisional ionization between Na((3p /sup 2/P/sub 3/2/) and Ba(6s/sup 2/ /sup 1/S/sub 0/) in which an optical p photon is absorbed simultaneously with the collision, Na((3p /sup 2/P/sub 3/2/)+Ba(6s/sup 2/ /sup 1/S/sub 0/)+h..omega -->..Ba((6p/sup 2/ /sup 1/S/sub 0/)+Na(3s /sup 2/S/sub 1/2/) and with subsequent photoionization of the excited barium, Ba((6p/sup 2/ /sup 1/S/sub 0/)+h..omega -->..Ba/sup +/+e. We observe peak ion intensity close to the difference frequency between Ba((6p/sup 2/ /sup 1/S/sub 0/) and Na((3p /sup 2/P/sub 3/2/) as well as a quadratic increase of ion intensity with laser power. These results confirm, complement, and extend the interpretation of an earlier observation.

Authors:
;
Publication Date:
Research Org.:
Department of Chemistry, University of Maryland, College Park, Maryland 20742
OSTI Identifier:
7050992
Resource Type:
Journal Article
Journal Name:
Phys. Rev. A; (United States)
Additional Journal Information:
Journal Volume: 29:4
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BARIUM; ATOM-ATOM COLLISIONS; SODIUM; CROSS SECTIONS; EXCITED STATES; LASER RADIATION; MULTI-PHOTON PROCESSES; PHOTOIONIZATION; TIME-OF-FLIGHT METHOD; ALKALI METALS; ALKALINE EARTH METALS; ATOM COLLISIONS; COLLISIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY LEVELS; IONIZATION; METALS; RADIATIONS; 640304* - Atomic, Molecular & Chemical Physics- Collision Phenomena

Citation Formats

Keller, J., and Weiner, J. Production of Ba/sup +/ in a two-photon radiative collision in crossed Na-Ba beams. United States: N. p., 1984. Web. doi:10.1103/PhysRevA.29.2230.
Keller, J., & Weiner, J. Production of Ba/sup +/ in a two-photon radiative collision in crossed Na-Ba beams. United States. doi:10.1103/PhysRevA.29.2230.
Keller, J., and Weiner, J. Sun . "Production of Ba/sup +/ in a two-photon radiative collision in crossed Na-Ba beams". United States. doi:10.1103/PhysRevA.29.2230.
@article{osti_7050992,
title = {Production of Ba/sup +/ in a two-photon radiative collision in crossed Na-Ba beams},
author = {Keller, J. and Weiner, J.},
abstractNote = {We report the observation of a two-step radiative collisional ionization between Na((3p /sup 2/P/sub 3/2/) and Ba(6s/sup 2/ /sup 1/S/sub 0/) in which an optical p photon is absorbed simultaneously with the collision, Na((3p /sup 2/P/sub 3/2/)+Ba(6s/sup 2/ /sup 1/S/sub 0/)+h..omega -->..Ba((6p/sup 2/ /sup 1/S/sub 0/)+Na(3s /sup 2/S/sub 1/2/) and with subsequent photoionization of the excited barium, Ba((6p/sup 2/ /sup 1/S/sub 0/)+h..omega -->..Ba/sup +/+e. We observe peak ion intensity close to the difference frequency between Ba((6p/sup 2/ /sup 1/S/sub 0/) and Na((3p /sup 2/P/sub 3/2/) as well as a quadratic increase of ion intensity with laser power. These results confirm, complement, and extend the interpretation of an earlier observation.},
doi = {10.1103/PhysRevA.29.2230},
journal = {Phys. Rev. A; (United States)},
number = ,
volume = 29:4,
place = {United States},
year = {1984},
month = {4}
}