Journal Article

PUBDB-2015-01732

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Revealing Sub-$\mu$m and $\mu$m-Scale Textures in $H_2O$ Ice at Megabar Pressures by Time-Domain Brillouin Scattering

Nikitin, S. ; Chigarev, N. ; Tournat, V. ; Bulou, A. ; Gasteau, D. ; Castagnede, B. ; Zerr, A. (Corresponding Author)>Extern* ; Gusev, V. E.

2015
Nature Publishing Group London

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Please use a persistent id in citations: doi:10.1038/srep09352

Abstract: The time-domain Brillouin scattering technique, also known as picosecond ultrasonic interferometry,allows monitoring of the propagation of coherent acoustic pulses, having lengths ranging from nanometresto fractions of a micrometre, in samples with dimension of less than a micrometre to tens of micrometres. Inthis study, we applied this technique to depth-profiling of a polycrystalline aggregate of ice compressed in adiamond anvil cell to megabar pressures. The method allowed examination of the characteristic dimensionsof ice texturing in the direction normal to the diamond anvil surfaces with sub-micrometre spatialresolution via time-resolved measurements of the propagation velocity of the acoustic pulses travelling inthe compressed sample. The achieved imaging of ice in depth and in one of the lateral directions indicatesthe feasibility of three-dimensional imaging and quantitative characterisation of the acoustical, optical andacousto-optical properties of transparent polycrystalline aggregates in a diamond anvil cell with tens ofnanometres in-depth resolution and a lateral spatial resolution controlled by pump laser pulses focusing,which could approach hundreds of nanometres.

Note: OA

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Contributing Institute(s):

1. DOOR-User (DOOR)
2. Universität Frankfurt (UFrankf.)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)
2. FS-Proposal: I-20130244 EC (I-20130244-EC) (I-20130244-EC)
3. CALIPSO - Coordinated Access to Lightsources to Promote Standards and Optimization (312284) (312284)

Experiment(s):

1. PETRA Beamline P02.2 (PETRA III)

Appears in the scientific report 2015

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Database coverage:
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