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Ultrafast X-ray imaging of pulsed plasmas in water by Campbell, Christopher; Tang, Xin; Sechrest, Yancey; Fezzaa, Kamel; Wang, Zhehui; Staack, David is a scholarly article available to read on EtoBox.

What is Ultrafast X-ray imaging of pulsed plasmas in water about?

Pulsed plasmas in liquids exhibit complex interaction between three phases of matter (liquids, gas, plasmas) and are currently used in a wide range of applications across several fields, however significant knowledge gaps in our understanding of plasma initiation in liquids hinder additional application and control; this area of research currently lacks a comprehensive predictive model. To aid progress in this area experimentally, here we present the first-known ultrafast (50 ps) X-ray images of pulsed plasma initiation processes in water (+25 kV, 10 ns, 5 mJ), courtesy of the X-ray imaging techniques available at Argonne National Laboratory's Advanced Photon Source (APS), with supporting nanosecond optical imaging and a computational X-ray diffraction model. These results clearly resolve narrow (~10 micron) low-density plasma channels during initiation timescales typically obscured by optical emission (<100 ns), a well-known and difficult problem to plasma experiments without access to state-of-the-art X-ray sources such as the APS synchrotron. Images presented in this work speak to several of the prevailing plasma initiation hypotheses, supporting electrostriction and bubble defo

Author

Campbell, Christopher; Tang, Xin; Sechrest, Yancey; Fezzaa, Kamel; Wang, Zhehui; Staack, David

Published

2020

Language

EN