Study of ultraviolet-visible fluorescence emission following resonant Auger decay of the 2p⁻¹ <em>nl</em> core-excited states of argon atoms
Wasowicz, Tomasz J.; Kivimäki, Antti; Stupar, Matija; Coreno, Marcello (2018-05-22)
Tomasz J. Wasowicz, Antti Kivimäki, Matija Stupar, Marcello Coreno, Study of ultraviolet-visible fluorescence emission following resonant Auger decay of the 2p-1nl core-excited states of argon atoms, Journal of Electron Spectroscopy and Related Phenomena, Volume 226, 2018, Pages 35-40, ISSN 0368-2048, https://doi.org/10.1016/j.elspec.2018.05.004
© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
https://creativecommons.org/licenses/by-nc-nd/4.0/
https://urn.fi/URN:NBN:fi-fe2018082133838
Tiivistelmä
Abstract
We have studied the excitation and relaxation of Ar⁺ ions populated in resonant Auger decay from the Ar 2p⁻¹ nl core-excited states by using ultraviolet-visible fluorescence spectroscopy and photon-photon delayed coincidence technique. Fluorescence emission yields were measured in the photon energy range of 240–255 eV for the 3s²3p⁴(¹D)5s(²D) → 3s²3p⁴(¹D)4p(²F) (393 nm) and 3s²3p⁴(¹D)4d(²F) → 3s²3p⁴(¹D)4p(²F) (335 nm) transitions as well as for the 380–500 nm wideband emission. Delayed coincidence photon decay curves for the cascade transitions of the 335/459 nm and 393/459 nm lines were measured at the four most intense Ar 2p core excitations and the coincidence yields for both studied cascade channels were obtained at these Ar 2p excitations.
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