Experimental study of one-electron capture by ground and metastable Ar2+ions from Na at 1.5 keV
- 28 June 1982
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 15 (12) , 1871-1881
- https://doi.org/10.1088/0022-3700/15/12/011
Abstract
The cross sections for one-electron capture by the ground-state Ar2+(3P) ions, sigma 21, and by the metastable Ar2+(1D) ions, sigma 21*, have been measured independently by an optical attenuation method (OAM). Both the cross-sections are of the order of 10-14 cm2 and sigma 21* is about 1.3 times as large as sigma 21. The metastable fraction in the primary-ion beam has been estimated at 0.29+or-0.16 from the OAM combined with the beam attenuation method. The OAM provides a useful means to determine one-electron capture cross sections for the ground and metastable ions, in particular when both the cross sections are nearly the same. The validity of the present method is discussed in detail.Keywords
This publication has 11 references indexed in Scilit:
- Excitation by electron capture in collisions of ground state and metastable Ne2+with Xe at 40 keVJournal of Physics B: Atomic and Molecular Physics, 1982
- On the population of metastable ionic states in electron-capture collisionsThe European Physical Journal A, 1981
- Single-Electron Capture into Ar+ Excited States in Ar2+ +Na Collision below 12 keV II. Relative Population Distribution in Ar+ Excited StatesJournal of the Physics Society Japan, 1980
- Single-Electron Capture into Ar+ Excited States in Ar2+ +Na Collision below 12 keV I. Absolute Measurement of Emission Cross-SectionsJournal of the Physics Society Japan, 1980
- Metastable-Atom Population of Fast, Neutral Helium BeamsPhysical Review Letters, 1979
- Excitation in fast He(23S)-He(11S) collisionsJournal of Physics B: Atomic and Molecular Physics, 1973
- Excitation of helium in He+-He and He-He collisions: the influence of metastable helium atomsJournal of Physics B: Atomic and Molecular Physics, 1973
- Deexcitation of HeliumandAtoms in Fast Collisions with Normal Helium AtomsPhysical Review B, 1969
- A quantitative analysis of fast metastable helium atoms in collisions involving electron lossJournal of Physics B: Atomic and Molecular Physics, 1968
- Abundance of Excited Ions in O+ and O2+ Ion BeamsThe Journal of Chemical Physics, 1968