Interaction potentials and energy transfer cross sections for collisions of metastable helium and neon. II. He(21S)+Ne
- 4 September 1982
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 15 (17) , 2969-2988
- https://doi.org/10.1088/0022-3700/15/17/026
Abstract
Differential cross sections for elastic and excitation transfer scattering were measured for He(21S)+Ne collisions at kinetic energies between 25 and 225 meV. A kinematic analysis and time-of-flight measurements show that Ne atoms can be excited into all energetically allowed states. From simultaneous fits of the elastic and inelastic differential cross sections information is obtained on the interaction potentials and the energy transfer cross sections. Total cross sections are in agreement with measurements in He-Ne discharges. The threshold for the pumping process of the 6328 AA line of the He-Ne laser, He(21S)+Ne to He+Ne(2p55s 1P1), is higher than previously assumed. The potential curves derived offer a simple explanation of the large differences in the cross sections for He(21S)+Ne to He+Ne(2p55s1P1 and 3P0,1,2), which is inconsistent with the commonly accepted Wigner spin rule.Keywords
This publication has 24 references indexed in Scilit:
- Scattering of Noble‐Gas Metastable Atoms in Molecular BeamsPublished by Wiley ,1981
- Long-range helium excimer potentials (,and,) from high-resolution differential cross sections for He(,)+HePhysical Review A, 1979
- The spectrum of HeNe+Journal of Molecular Spectroscopy, 1978
- Potentials with bends and humps: Metastable helium plus D2, Ar, and KrThe Journal of Chemical Physics, 1977
- Studies of the Potential-Curve-Crossing Problem. II. General Theory and a Model for Close CrossingsPhysical Review A, 1972
- Semiclassical approximations in wave mechanicsReports on Progress in Physics, 1972
- Cross Sections for Collisions of the Second Kind in a Helium-Neon DischargePhysical Review A, 1971
- Penning ionization by metastable helium atomsJournal of Physics B: Atomic and Molecular Physics, 1968
- POPULATION PULSATIONS AND LIFETIMES IN He–Ne LASERSApplied Physics Letters, 1964
- Cross Sections for the De-Excitation of Helium Metastable Atoms by Collisions with AtomsPhysical Review B, 1962