Eur. Phys. J. D (2015) 69: 155
https://doi.org/10.1140/epjd/e2015-60170-0

Regular Article

Differential distributions for the double photoionization of helium

National Research Centre “Kurchatov Institute”, B. P. Konstantinov Petersburg Nuclear Physics Institute, Orlova Roscha, Gatchina, 188300 Leningrad district, Russia

^a e-mail: drukarev@thd.pnpi.spb.ru

Received: 13 March 2015
Received in final form: 14 May 2015
Published online: 11 June 2015

Abstract

We calculate in the dipole approximation the triple and double differential distributions for the double photoionization of helium far away from threshold. We obtain a simple analytical limiting expression for the asymmetry coefficient. The results are in good agreement with the numerical results obtained by the others.