Experimental determination of the absolute value of the triple differential cross section for double photoionization in helium
- 28 July 1995
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 28 (14) , 2847-2862
- https://doi.org/10.1088/0953-4075/28/14/008
Abstract
The absolute triple differential cross section (TDCS) for double photoionization has been determined experimentally for the first time. The investigation was carried out for helium at a photon energy of 99 eV, for equal energy of the emitted electrons and in a plane perpendicular to the photon beam. Electron, ion and combined ion-electron spectrometry measurements were performed to put the data on an absolute scale. The result is compared with two recent calculations, and a parametrization is given which extends the TDCS obtained at one specific geometry to the whole space.Keywords
This publication has 36 references indexed in Scilit:
- Three-body Coulomb continuum problemPhysical Review Letters, 1994
- Sixfold differential cross sections for atomic helium, magnesium, and calcium in (γ,2e) experimentsPhysical Review A, 1994
- Multicoincidence measurements of double photoionization in heliumJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Chiral electron pairs from double photoionizationJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Circular dichroism in double photoionizationPhysical Review Letters, 1992
- Double photoionization of helium: Effect of the Coulomb repulsion on the angle-resolved cross sectionPhysical Review A, 1992
- About some experimental aspects of double and triple coincidence techniques to study electron impact double ionizing processesMeasurement Science and Technology, 1991
- Triply-differential cross sections for ionisation of hydrogen atoms by electrons and positronsJournal of Physics B: Atomic, Molecular and Optical Physics, 1989
- Setup for angle-resolved electron spectrometry using monochromatised synchrotron radiationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1987
- Ionization and electron capture to the continuum in the-hydrogen-atom collisionPhysical Review A, 1980