Cross-section measurement and theoretical evaluation for the energy-transfer collision Na(3P)+Na(3P)Na(4F)+Na(3S)

Year: 1985

Authors: Allegrini M., Gabbanini C., Moi L., Colle R.

Autors Affiliation: Istituto di Fisica Atomica e Molecolare, Consiglio Nazionale Delle Ricerche, Via del Giardino 7, I-56100 Pisa, Italy; Scuola Normale Superiore, Piazza dei Cavalieri 5, I-56100 Pisa, Italy

Abstract: We have measured the cross section sigma(4F) for the collisional process Na(3P)+Na(3P)→Na(4F) +Na(3S). The experiment is based on the measurement of the intensities for 4F, 4D, and 3P fluorescence emissions in sodium vapor excited with a cw dye laser. Sigma(4F) is determined relative to sigma(4D), which has been measured in an absolute way in previous experiments. Influence on sigma(4F) and sigma(4D) of the energy-transfer process Na(4F) +Na(3S)⇄Na(4D)+Na(3S) is also discussed. A theoretical evaluation of sigma(4F) and sigma(4D) relative to a chosen molecular channel is given and compared with the experimental determinations.

Journal/Review: PHYSICAL REVIEW A

Volume: 32 (4)      Pages from: 2068  to: 2076

KeyWords: Energy-transfer collision; Fluorescence emission in sodium vapor; Dye laser;
DOI: 10.1103/PhysRevA.32.2068

Citations: 19
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