Asymmetry parameters for near-threshold photo-double ionization of helium
- 28 July 1994
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 27 (14) , L341-L345
- https://doi.org/10.1088/0953-4075/27/14/007
Abstract
The asymmetry parameters for photo-double ionization of helium up to 2 eV above threshold have been measured using a coincidence photoelectron spectrometer and synchrotron radiation. The observations were made for the extreme case of unequal energy partitioning between the two photoelectrons wherein one electron has near-zero energy and the other carries off all the excess energy. The measurements show that, even in this special case, electron correlation still plays a dominant role.Keywords
This publication has 11 references indexed in Scilit:
- 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 distribution of electrons following double photoionizationJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Energy- and angle-resolved double photoionization in heliumPhysical Review Letters, 1993
- Asymmetry parameter for double photoionizationPhysical Review Letters, 1992
- Threshold photo-double ionization processes in helium studied by a photoelectron/photoion coincidence techniqueJournal 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
- Photoionization phenomena near the double-ionization threshold of heliumJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- A new technique for threshold excitation spectroscopyJournal of Physics B: Atomic and Molecular Physics, 1974