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A detailed investigation of single-photon laser enabled Auger decay in neon

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Title: A detailed investigation of single-photon laser enabled Auger decay in neon
Authors: You, D
Ueda, K
Ishikawa, K
Ruberti, M
Carpeggiani, P
Csizmadia, T
Gulyás Oldal, L
NG, H
Sansone, G
Maroju, P
Kooser, K
Callegari, C
Plekan, O
Di Fraia, M
Gianessi, L
Allaria, E
De Ninno, G
Trovo, M
Badano, L
Diviacco, B
Gauthier, D
Mirian, N
Penco, G
Rebernik Ribic, P
Spampinati, S
Di Mitri, S
Spezzani, C
Gaio, G
Prince, KC
Item Type: Journal Article
Abstract: Single-photon Laser Enabled Auger Decay (spLEAD) is an electronic de-excitation process which was recently predicted and observed in Ne. We have investigated it using bichromatic phase-locked Free Electron Laser radiation and extensive angle-resolved photoelectron measurements, supported by a detailed theoretical model. We first used separately the fundamental wavelength resonant with the Ne+ 2s-2p transition, 46.17 nm, and its second harmonic, 23.08 nm, then their phase-locked bichromatic combination. In the latter case the phase difference between the two wavelengths was scanned, and interference effects were observed, confirming that the spLEAD process was occurring. The detailed theoretical model we developed qualitatively predicts all observations: branching ratios between the final Auger states, their amplitudes of oscillation as a function of phase, the phase lag between the oscillations of different final states, and partial cancellation of the oscillations under certain conditions.
Issue Date: 28-Oct-2019
Date of Acceptance: 28-Oct-2019
URI: http://hdl.handle.net/10044/1/74916
DOI: 10.1088/1367-2630/ab520d
ISSN: 1367-2630
Publisher: Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft
Journal / Book Title: New Journal of Physics
Volume: 21
Copyright Statement: © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft and the Institute of Physics. As the Version of Record of this article is going to be/has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately. Although reasonable endeavours have been taken to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record on IOPscience once published for full citation and copyright details, as permission may be required. All third party content is fully copyright protected, and is not published on a gold open access basis under a CC BY licence, unless that is specifically stated in the figure caption in the Version of Record.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: ARCHER eCSE13-14
Keywords: Fluids & Plasmas
02 Physical Sciences
Publication Status: Published
Online Publication Date: 2019-10-28
Appears in Collections:Quantum Optics and Laser Science
Physics
Faculty of Natural Sciences