Journal Article

PUBDB-2024-06732

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Separation of kinetic rate orders in extreme ultraviolet transient grating spectroscopy

marroux, h. (Corresponding author)Extern* ; Polishchuk, S. ; Cannelli, O.XFEL.EU*DESY* ; Ingle, R. A. ; Mancini, G. F. ; Bacellar, C. ; Puppin, M. ; Geneaux, R. ; Knopp, G. ; Foglia, L. ; Pedersoli, E. ; Capotondi, F. ; Nikolov, I. P. ; Bencivenga, F. ; Mincigrucci, R. ; Masciovecchio, C. ; Chergui, M. (Corresponding author)Extern*XFEL.EU*

2024
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-6455/ad421f  doi:10.3204/PUBDB-2024-06732

Abstract: We present an extreme ultraviolet (EUV) transient grating (TG) experiment of the spinel Co$_3$O$_4$compound using tuneable incident energies across the Co M$_{2,3}$-edge and a 395 nm probe pulse,detecting both the first and the second diffraction orders (SDOs). While the first diffractionorder shows a monotonous behavior 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 timedependence of SDO varies dramatically with the incident energy as it is tuned across the CoM-edge, with the appearance of a component at t > 1 ps that grows with increasing energy. Theresults are rationalized in terms of the deviations of the initial grating from sinusoidal tonon-sinusoidal, namely a flattening of the grating pattern, that introduces new Fouriercomponents. These deviations are due to higher order, three-body terms in the population.

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. DYNAMOX - Charge carrier dynamics in metal oxides (695197) (695197)
3. HYPER - Real-time, High-throughput, Coherent X-ray Microscopy: from Large-Scale Installations to Tabletop Device (101123123) (101123123)
4. ULTRAIMAGE - Advanced EUV/soft X-ray microscopy in the ultrafast regime: imaging functionality of nanomaterials across length scales (851154) (851154)
5. CHIRAX - X-ray spectroscopy of molecular chirality in solutions (101095012) (101095012)
6. SATTOC - Solution attosecond chemistry (101078595) (101078595)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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