Inelastic collisions between selectively excited rubidium atoms and ground-state rubidium atoms

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.25.834· OSTI ID:5424110

Hill, Jr, R H; Schuessler, H A; Zollars, B G

Inelastic-collision processes in fine-structure-changing collisions have been studied by selective stepwise excitation and observation of the resulting fluorescence. Hereby, the effect of ground-state rubidium atoms colliding with excited-state rubidium atoms was investigated. The ground-state density was changed by three orders of magnitude by performing the measurements over the temperature range of 75 to 200 /sup 0/C. The cross section for fine-structure-changing collisions (i.e., Rb(6/sup 2/D/sub 5/2/)+Rb(5/sup 2/S/sub 1/2/)..-->..Rb(6/sup 2/D/sub 3/2/) + Rb(5/sup 2/S/sub 1/2/)) is sigma/sub fs/ = (1.0 +- 0.6) x 10/sup -13/ cm/sup 2/. The cross sections for transfer out of the fine-structure doublet (i.e., Rb(6/sup 2/D)+Rb(5/sup 2/S/sub 1/2/)..-->.. states other than Rb(6/sup 2/D)) is sigma/sub tr/ = (3.8 +- 0.6) x 10/sup -13/ cm/sup 2/. It is demonstrated that for the intermediate excited rubidium states, both the fine-structure-changing and transfer cross sections are of the order of the geometrical cross section of the excited rubidium states.

• Research Organization: Department of Physics, Texas AandM University, College Station, Texas 77843
• OSTI ID: 5424110
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 25:2; ISSN PLRAA
• 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
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FINE STRUCTURE
FLUORESCENCE
GROUND STATES
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
LUMINESCENCE
METALS
RUBIDIUM
RUBIDIUM IONS
TEMPERATURE DEPENDENCE