Study of the optical emission in collisions between rare-gas atoms: spectra of the emitted radiation
- 1 December 1976
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 9 (17) , 3081-3097
- https://doi.org/10.1088/0022-3700/9/17/023
Abstract
The optical spectra between 3300 and 8800 AA were studied at collision energies below about 700 eV for He+He, Ne, Ar, Ne+Ne, Ar and Ar+Ar. Relative cross sections for population of the lowest excited states were derived. For He+He the strong excited He(1snl) states with n>or=3 are He(31P) and He(33D). The strongest emission in all cases involving Ne and Ar atoms was due to the decay of the lowest np5(n+1)p levels of Ne and Ar. Considerable excitation of higher levels was observed for He+Ne, He+Ar and Ar+Ar. For the asymmetrical combinations, excitation of the heavier collision partner is always much stronger than that of the lighter particle. From the relative values of the cross sections for excitation of individual angular momentum states of the np5(n+1)p configurations, it is found that rotational coupling is the most important mechanism causing single excitation in the symmetrical systems Ne+Ne and Ar+Ar, and is also important, though not exclusively, for the other combinations studied.Keywords
This publication has 17 references indexed in Scilit:
- Study of the optical emission in Ne+Ne and Ar+Ar collisions in the range 15 to 500 eVJournal of Physics B: Atomic and Molecular Physics, 1975
- Collisions between rare-gas atoms at low-keV energies. II. Asymmetric collision systems: He-Ne, -Ar, -Kr, -XePhysical Review A, 1975
- Excitation processes in low-energy collisions between ground state helium atomsJournal of Physics B: Atomic and Molecular Physics, 1975
- Excitation of the 42P3/2level of potassium in collisions with rare gas atoms. Polarization of the emitted radiationJournal of Physics B: Atomic and Molecular Physics, 1975
- Collisions between rare-gas atoms at low keV energies. I. Symmetric systemsPhysical Review A, 1975
- Transferts de population entre niveaux 2p du néon, par collisions contre atomes de néon a l'état fondamentalJournal de Physique, 1975
- Quasimolecular-state interference studies: Collisions between ions ranging fromtoand Ne atomsPhysical Review A, 1974
- A new system of oscillations in the potassium-rare gas scatteringJournal of Physics B: Atomic and Molecular Physics, 1974
- Ionization processes in He-He collisionsJournal of Physics B: Atomic and Molecular Physics, 1973
- Optical radiation produced by 1100 eV He+, He∗, and HeO in various gasesPhysics Letters A, 1970