eprintid: 10192209
rev_number: 6
eprint_status: archive
userid: 699
dir: disk0/10/19/22/09
datestamp: 2024-05-13 09:18:08
lastmod: 2024-05-13 09:18:08
status_changed: 2024-05-13 09:18:08
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Marroux, Hugo JB
creators_name: Polishchuk, Serhii
creators_name: Cannelli, Oliviero
creators_name: Ingle, Rebecca
creators_name: Mancini, Giulia F
creators_name: Bacellar, Camila
creators_name: Puppin, Michele
creators_name: Géneaux, Romain
creators_name: Knopp, Gregor
creators_name: Foglia, Laura
creators_name: Pedersoli, Emanuele
creators_name: Capotondi, Flavio
creators_name: Nikolov, Ivaylo
creators_name: Bencivenga, Filippo
creators_name: Mincigrucci, Riccardo
creators_name: Masciovecchio, Claudio
creators_name: Chergui, Majed
title: Separation of kinetic rate orders in extreme ultraviolet transient grating spectroscopy
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F56
note: Original content from this work may be used under the terms
of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
abstract: We present an Extreme Ultraviolet (EUV) transient grating (TG) experiment of the spinel Co3O4 compound using tuneable incident energies across the Co M2,3-edge and a 395 nm probe pulse, detecting both the first and the second diffraction orders. While the first diffraction order shows a monotonous behaviour as a function of time, with a sharp response at t=0, followed by a weak sub-picosecond component and a nearly constant signal thereafter, the time dependence of second diffraction order varies dramatically with the incident energy as it is tuned across the Co M-edge, with the appearance of a component at t>1 ps that grows with increasing energy. The results are rationalised in terms of the deviations of the initial grating from sinusoidal to non-sinusoidal, namely a flattening of the grating pattern, that introduces new Fourier components. These deviations are due to higher order, three-body terms in the population relaxation kinetics. These results highlight the use of the response of the second diffraction order in EUV TG as a tool to identify higher order terms in the population kinetics.
date: 2024-05-07
date_type: published
publisher: IOP Publishing
official_url: http://dx.doi.org/10.1088/1361-6455/ad421f
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2271080
doi: 10.1088/1361-6455/ad421f
lyricists_name: Ingle, Rebecca
lyricists_id: RINGL19
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: public
publication: Journal of Physics B: Atomic, Molecular and Optical Physics
volume: 57
number: 11
article_number: 115401
issn: 0953-4075
citation:        Marroux, Hugo JB;    Polishchuk, Serhii;    Cannelli, Oliviero;    Ingle, Rebecca;    Mancini, Giulia F;    Bacellar, Camila;    Puppin, Michele;                                         ... Chergui, Majed; + view all <#>        Marroux, Hugo JB;  Polishchuk, Serhii;  Cannelli, Oliviero;  Ingle, Rebecca;  Mancini, Giulia F;  Bacellar, Camila;  Puppin, Michele;  Géneaux, Romain;  Knopp, Gregor;  Foglia, Laura;  Pedersoli, Emanuele;  Capotondi, Flavio;  Nikolov, Ivaylo;  Bencivenga, Filippo;  Mincigrucci, Riccardo;  Masciovecchio, Claudio;  Chergui, Majed;   - view fewer <#>    (2024)    Separation of kinetic rate orders in extreme ultraviolet transient grating spectroscopy.                   Journal of Physics B: Atomic, Molecular and Optical Physics , 57  (11)    , Article 115401.  10.1088/1361-6455/ad421f <https://doi.org/10.1088/1361-6455%2Fad421f>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10192209/1/Marroux_2024_J._Phys._B__At._Mol._Opt._Phys._57_115401.pdf