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Angular anisotropy parameters for sequential two-photon double ionization of helium

Date

Authors

Ivanov, Igor

Kheifets, Anatoli

Publisher

American Physical Society

Abstract

We evaluate photoelectron angular anisotropy β parameters for the process of sequential two-photon double electron ionization of helium within the lowest-order time-independent perturbation theory. Our results indicate that for photoelectron energies outside the interval (Eslow,Efast), where Eslow=ω−VHe+ and Efast=ω−VHe, there is a considerable deviation from the dipole angular distribution, thus indicating the effect of electron correlation.

Keywords

Keywords: Angular distribution; Anisotropy; Electrons; Helium; Multiphoton processes; Perturbation techniques; Photons; Angular anisotropies; Electron ionizations; Perturbation theories; Photoelectron energies; Two photons; Two-photon double ionizations; Photoioniz

Citation

Physical Review A 79.2 (2009): 023409/1-7

URI

http://hdl.handle.net/10440/999
http://digitalcollections.anu.edu.au/handle/10440/999

Collections

ANU Research Publications

Source

Physical Review A: Atomic, Molecular and Optical Physics

Type

Journal article

DOI

10.1103/PhysRevA.79.023409

Downloads

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Description

Ivanov_AngularAnisotropy2009.pdf (121.17 KB)