Coulomb expansion of a two-component ion bunch: influence on high-field ionization experiments

Autor:	T D G Walsh, M V Ammosov, F A Ilkov, See Leang Chin
Rok vydání:	1994
Předmět:	Physics Tunnel effect Tunnel ionization Ionization Mass spectrum Coulomb Photoionization Atomic physics Condensed Matter Physics Atomic and Molecular Physics and Optics Electron ionization Ion
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 27:1115-1124
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/27/6/011
Popis:	A new aspect of the space-charge effect is investigated. We have observed Ar+ double peaks in the time-of-flight mass spectra recorded during the tunnel ionization of the Xe-Ar gas mixture using CO2 laser radiation. It is shown theoretically that this effect results from the Coulomb expansion of the two-component ion bunch produced in the focal volume. Calculations based on the proposed qualitative theoretical model agree well with the experimental data. This phenomenon is shown to be important in high-field ionization experiments in which multi-component ion bunches are produced.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7f5fbc094fbfeb7728eb8135a068792 https://doi.org/10.1088/0953-4075/27/6/011 Zobrazit plný text záznamu