The ionization of Li+ to Li3+ by electron impact
- 1 November 1969
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 2 (11), 1169-1175
- https://doi.org/10.1088/0022-3700/2/11/306
Abstract
The crossed-beam method for measuring electron impact ionization cross sections of ions has been developed so that very small cross sections (similar 10-21 cm2) can now be determined with an accuracy approaching ±10%. The reaction Li+ +e->Li3+ +3e has been investigated for incident electron energies between threshold (198 ev) and 25 kev. The cross section reached a maximum value of 104 × 10-20 cm2 and fell to 45 × 10-21 cm2 at 25 kev. The results are discussed and compared with theoretical and experimental values for the double ionization of helium.Keywords
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