Near threshold TDCS for photo-double ionization of helium
- 28 April 1995
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 28 (8) , L271-L277
- https://doi.org/10.1088/0953-4075/28/8/002
Abstract
TDCS for photo-double ionization of helium have been measured in a PhotoElectron-PhotoElectron COincidence (PEPECO) experiment. The TDCS have been obtained for the first time at very low excess energies E, 0.6 eV<E<2 eV, for both equal and unequal energy sharing between the two outgoing electrons. The measured data are compared with the predictions of the Wannier model, and also with recent, non-Wannier, ab initio calculations. In addition, also for the first time, the relative magnitudes of the various TDCS measured have been determined in this excess energy region, suggesting a departure from the predictions of the Wannier model at the largest excess energy studied, E=2 eV.Keywords
This publication has 21 references indexed in Scilit:
- Asymmetry parameters for near-threshold photo-double ionization of heliumJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Electron angular distribution in near-threshold double photoionization: extended Wannier ridge modelJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Multicoincidence measurements of double photoionization in heliumJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Asymmetry parameters for double photoionization of neon to the 2p-21S state in the threshold regionJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Angular electron correlations near the double ionization thresholdJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Chiral electron pairs from double photoionizationJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Wannier threshold law: rederivation and applicability rangeJournal of Physics B: Atomic, Molecular and Optical Physics, 1992
- A penetrating field electron-ion coincidence spectrometer for use in photoionization studiesMeasurement Science and Technology, 1992
- Wannier theory for double photoionization of noble gasesJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- Photoionization phenomena near the double-ionization threshold of heliumJournal of Physics B: Atomic, Molecular and Optical Physics, 1991