The NVV Auger electron spectrum of the HI molecule
- 14 October 1989
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 22 (19) , 3001-3009
- https://doi.org/10.1088/0953-4075/22/19/014
Abstract
The electron-beam-excited NVV Auger electron spectrum of HI is presented together with a new recording of the X-ray excited photoelectron spectrum of the I 4d core lines. It is shown that the initial I 4d core hole state is vibrationally excited. The NVV Auger electron spectrum is dominated by transitions to the pi -2 dicationic states of 3 Sigma -, 1 Delta and 1 Sigma + symmetry. Vibrational structure is resolved in all Auger transitions and the equilibrium geometry of both the initial core-hole state and the final dicationic states have been determined. A splitting of the 3 Sigma 1- and 3 Sigma 0- states of 220 meV is observed. The dissociation of the pi -2 dicationic states in terms of Coulomb explosion is discussed and tentative potential curves are given.Keywords
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