Transferts de population entre niveaux 2p du néon, par collisions contre atomes de néon a l'état fondamental

Grandin, J. P.; Hennecart, D.; Husson, X.; Lecler, D.; Vienne, J.F.; Barrat-Rambosson, M.

doi:10.1051/jphys:01975003609078700

Cited by 13 publications

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“…Therefore we consider collisions of Ne(2 p 5 3 p ) with He and Ne, where Penning ionization cannot occur. Ne(2 p 5 3 p ) + Ne collisions have been studied by several investigators. − Chang and Setser found that the 3 p [1/2] 1 level is quenched (loss to levels outside of the 2 p 5 3 p manifold) with a rate constant of 1.7 × 10 –11 cm 3 s –1 , which is too fast for the proposed application. Collisions between Ne(2 p 5 3 p ) and He have also been examined, ,,− but all of the state-to-state transfer measurements have focused on the higher energy levels (in part because the 632.8 nm line of the HeNe laser terminates on the 3 p ′[3/2] 2 level).…”

Section: Introductionmentioning

confidence: 99%

Energy Transfer Kinetics of the np⁵(n + 1)p Excited States of Ne and Kr

Kabir

2011

J. Phys. Chem. A

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Energy transfer rate constants for Ne(2p(5)3p) and Kr(4p(5)5p) atoms colliding with ground state rare gas atoms (Rg) have been measured. In part, this study is motivated by the possibility of using excited rare gas atoms as the active species in optically pumped laser systems. Rg(np(5)(n + 1)s) metastable states may be produced using low-power electrical discharges. The potential then exits for optical pumping and laser action on the np(5)(n + 1)p ↔ np(5)(n + 1)s transitions. Knowledge of the rate constants for collisional energy transfer and deactivation of the np(5)(n + 1)p states is required to evaluate the laser potential for various Rg + buffer gas combinations. In the present study we have characterized energy transfer processes for Ne (2p(5)3p) + He for the six lowest energy states of the multiplet. Rate constants for state-to-state transfer have been determined. Deactivation of the lowest energy level of Kr (4p(5)5p) by He, Ne, and Kr has also been characterized. Initial results suggest that Kr (4p(5)5p) + Ne mixtures may be the best suited for optically pumped laser applications.

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