Eur. Phys. J. D 51, 319-320 (2009)
https://doi.org/10.1140/epjd/e2009-00002-4

“Electron impact ionization of helium isoelectronic systems"

M.R. Talukder, Eur. Phys. J. D 49, 167–172 (2008)

¹ Faculty of Physics, Weizmann Institute of Sciences, Rehovot, 76100, Israel
² National Institute of Standards and Technology, Gaithersburg, MD, 20899-8422, USA

Corresponding author: ^a yuri.ralchenko@nist.gov

Received: 5 October 2008
Published online: 6 February 2009

Abstract

We show that the criticism [Eur. Phys. J. D 49, 167 (2008)] of our empirical formula for electron-impact ionization of atomic ions [J. Phys B. 33, 5025 (2000)] is unjustified.