Journal Article

PUBDB-2017-10179

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems

Beckwith, M. A. ; Jiang, S. ; Schropp, A.DESY* ; Fernandez-Pañella, A. ; Rinderknecht, H. G. ; Wilks, S. C. ; Fournier, K. B. ; Galtier, E. C. ; Xing, Z. ; Granados, E. ; Gamboa, E. ; Glenzer, S. H. ; Heimann, P. ; Zastrau, U.XFEL.EU* ; Cho, B. I. ; Eggert, J. H. ; Collins, G. W. ; Ping, Y.

2017
American Institute of Physics [S.l.]

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Please use a persistent id in citations: doi:10.1063/1.4982166  doi:10.3204/PUBDB-2017-10179

Abstract: Tuning the energy of an x-ray probe to an absorption line or edge can provide material-specific measurements that are particularly useful for interfaces. Simulated hard x-ray images above the Fe K-edge are presented to examine ion diffusion across an interface between Fe$_2$O$_3$ and SiO$_2$ aerogel foam materials. The simulations demonstrate the feasibility of such a technique for measurements of density scale lengths near the interface with submicron spatial resolution. A proof-of-principle experiment is designed and performed at the Linac coherent light source facility. Preliminary data show the change of the interface after shock compression and heating with simultaneous fluorescence spectra for temperature determination. The results provide the first demonstration of using x-ray imaging at an absorption edge as a diagnostic to detect ultrafast phenomena for interface physics in high-energy-density systems.

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Contributing Institute(s):

1. FS-PETRA (FS-PETRA)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)

Experiment(s):

1. HED: High-Density matter Experiments (SASE2)

Appears in the scientific report 2017

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Database coverage:
; ; ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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