Compton double ionization of the helium atom: Can it be a method of dynamical spectroscopy of ground state electron correlation?. (February 2022)

• Record Type: Journal Article
• Authors: Chuluunbaatar, O.; Houamer, S.; Popov, Yu.V.; Volobuev, I.P.; Kircher, M.; Dörner, R.
• Is Part Of: Journal of quantitative spectroscopy & radiative transfer. Volume 278(2022)
• Publication Date: 2022-02
• Subjects: Methods of dynamical spectroscopy -- Compton double ionization of atoms; Spectrum analysis -- Periodicals; Radiation -- Periodicals; Analyse spectrale -- Périodiques; Rayonnement -- Périodiques; Radiation; Spectrum analysis; Periodicals; 543.0858
• DOI: 10.1016/j.jqsrt.2021.108020
• Languages: English
• ISSNs: 0022-4073

Abstract

Highlights: A new method of dynamical spectroscopy. Compton ionization of atoms. Formulating conditions for new experiments. Abstract: Recent experiments on single and double ionization of atoms by Compton scattering potentially open the door to establishing new methods of dynamical spectroscopy complementing the well-known methods like (e, 2e) and (e, 3e) spectroscopy. In this paper we explore the possibility to use double ionization of the helium atom by Compton scattering as a tool for direct spectroscopy of electron-electron correlations. For rather high photon energies of a few dozens of keV, a non-relativistic theoretical description of the process and the Kramers-Heisenberg-Waller approximation can be consistently used with a high computational efficiency.