Inverted Cusps in Electron Spectra near Zero Velocity in an Attractive Coulomb Field
- 1 August 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 51 (5), 374-377
- https://doi.org/10.1103/PhysRevLett.51.374
Abstract
An inverted cusp in the near-zero-velocity electron-loss spectrum for a initial state is predicted for an attractive final-state Coulomb interaction. The dip occurs in the singly differential cross section , calculated in Born approximation, at , where the electron velocity matches the projectile velocity and where the familiar cusp normally appears. The dip becomes more pronounced with increasing projectile velocities . Its existence is traced to the odd parity of the initial state.
Keywords
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