Cross-section measurement for the energy-transfer collisions Na(3P)+Na(3P). -->. Na(5S,4D)+Na(3S)

Journal Article · Thu Sep 01 00:00:00 EDT 1983 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.28.1338· OSTI ID:5667133

Allegrini, M; Bicchi, P; Moi, L

We report our measurements of the cross sections sigma/sub 5S/ and sigma/sub 4D/ for the electronic-energy-transfer process Na(3P)+Na(3P)..-->..Na(5S,4D)+Na(3S). To obtain these cross sections we have measured the fluorescence intensity for the transitions 5S..-->..3P, 4D..-->..3P, and 3P..-->..3S in sodium vapor excited with a cw dye laser. The study of this electronic energy transfer is complicated and there is a large disagreement (> or approx. =10/sup 4/) among reported measurements. We believe we have avoided most of the difficulties of previous experiments. Our results are sigma/sub 5S/ = (2.0 +- 0.7) x 10/sup -15/ cm/sup 2/ and sigma/sub 4D/ = (3.2 +- 1.1) x 10/sup -15/ cm/sup -2/, and they are compared with the results of other experiments.

• Research Organization: Istituto di Fisica Atomica e Molecolare del Consiglio Nazionale delle Richerche, Via del Giardino, 3-56100 Pisa, Italy
• OSTI ID: 5667133
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 28:3; 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
ATOM-ATOM COLLISIONS
BEAMS
COLLIDING BEAMS
COLLISIONS
DE-EXCITATION
ELEMENTS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUORESCENCE
FLUX DENSITY
LASERS
LUMINESCENCE
METALS
SODIUM