Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session TP11: Poster Session VII: In-Person, Hall A (9:30-11:00am) and Virtual Poster Presentations (11:15am-12:30pm)
MFE: FRC, RFPs etc
ICF: Fast Ignition; Diagnostics; Computational; Laser Plasma Interactions
FUND: Computation
9:30 AM - 12:30 PM
Thursday, October 20, 2022
Room: Exhibit Hall A and Online
Abstract: TP11.00145 : X-ray imaging of and phase transformation kinetics in shocked Silicon at LCLS*
Presenter:
Bob Nagler
(SLAC - Natl Accelerator Lab)
Authors:
Bob Nagler
(SLAC - Natl Accelerator Lab)
Hae Ja Lee
(SLAC National Accelerator Laboratory)
Dimitri Khaghani
(SLAC National Accelerator Accelerator)
Eric Cunningham
(SLAC National Accelerator Laboratory)
Thomas Hatcher
(SLAC National Accelerator Laboratory)
Hai-En Tsai
(SLAC National Accelerator Laboratory)
Gilliss Dyer
(SLAC - Natl Accelerator Lab)
Arianna Gleason
(SLAC - Natl Accelerator Lab)
Silvia Pandolfi
(SLAC - Natl Accelerator Lab)
Anne Sakdinawat
(SLAC National Accelerator Laboratory)
Yanwei Liu
(SLAC National Accelerator Laboratory)
Daniel S Hodge
(Brigham Young University)
Richard L Sandberg
(Brigham Young University)
Eric Galtier
(SLAC - Natl Accelerator Lab)
The diagnostic uses the sub-100 fs pulse duration of the X-ray beam at photon energies between 6 and 17 keV to obtain real density snapshots of material dynamics under extreme conditions at better than 600 nm spatial resolution and over larger than 100micron field of view.
We have used the diagnostic to image shock waves in single crystal Si, investigating the two elastic waves and the related kinetically inhibited phase transition to Si-V and Si-XI. In addition we see for the first time in situ the banding associated with this phase transition which has been predicted by MD simulation but never been recorded during a shock before.
*Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. The MEC instrument is supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences under contract No. DE-AC02-76SF00515.
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