Oscillations due to two-electron exchange during He-Ne collisions
Ne (-)(1s(2)2s(2)2p(5)3s(2)) and He (-)(1s2s(2)) autodetachment peaks in electron spectra arising from He-Ne collisions at energies ranging from 350 eV to 6 keV have been measured. The areas of these two peaks are found to oscillate approximately in antiphase, with a constant wavelength, on a (velocity)(-1) scale. It is shown that this behavior can be explained by the "quasiresonance" situation for the separating particles in the channels Ne (-)-He (+) and He (-)-Ne (+). This explanation implies that the oscillations can be understood as being due to the simultaneous "hopping" of two electrons.
Planje
WG
Debye Institute, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands.
Westerveld
WB
Niehaus
A