The electron-impact double ionization of helium: Dynamical variational treatment

Dorn, A.; Machavariani, Z.S.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

The electron-impact double ionization of helium: Dynamical variational treatment

MPS-Authors

/persons/resource/persons30419

Dorn, A.
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

External Resource

http://gesj.internet-academy.org.ge/en/search_en.php
(Any fulltext)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

2532.pdf
(Publisher version), 445KB

Supplementary Material (public)

There is no public supplementary material available

Citation

Dorn, A., & Machavariani, Z. (2015). The electron-impact double ionization of helium: Dynamical variational treatment. GESJ: Physics, 13(1), 26-35.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-5572-0

Abstract

Two-electron emission from an atom is considered. Based on the Hulth´en-Kohn dynamical variational principle the effective charge seen by the ejected electrons are determined for a certain type of trial wave functions. Validity of the elaborated approach is assessed by calculating fully differential cross section (FDCS) for electron-impact double ionization of helium. The relatively small momentum transfer (q = 0.5 a.u.) at 2 keV impact energy and equal energy sharing between ejected electrons (5eV, 10eV, 20eV) provides reasonable kinematical conditions for application of the First Born Approximation (FBA). The calculated five fold differential cross section (FDCS) is in reasonable agreement with the corresponding experimental observations.