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 TM09: Mini-Conference: Relativistic Plasma Physics in Supercritical Fields I
9:30 AM–12:30 PM,
Thursday, October 20, 2022
Room: 206 AB
Chair: Stepan Bulanov, LBL
Abstract: TM09.00005 : Ponderomotive electron scattering from high-intensity laser pulses*
10:42 AM–11:00 AM
Presenter:
Andrew M Longman
(Lawrence Livermore National Laboratory)
Authors:
Andrew M Longman
(Lawrence Livermore National Laboratory)
Wendell T Hill
(University of Maryland, College Park)
Robert Fedosejevs
(University of Alberta)
Luis Roso
(Centros Laseres Pulsados Ultraintensos (CLPU))
Smrithan Ravichandran
(University of Maryland)
Nathan McLane
(Univeristy of Maryland)
Lili Manzo
(Lawrence Livermore National Laboratory)
Roberto Lera Matellanes
(Centros Laseres Pulsados Ultraintensos (CLPU))
Marine Huault
(Centros Laseres Pulsados Ultraintensos (CLPU))
Calvin Z He
(University of Maryland, College Park)
German Tiscareno
(The Ohio State University)
David Hanggi
(The Ohio State University)
Pedro Spingola
(The Ohio State University)
Nicholas Czapla
(Ohio State University)
Rebecca L Daskalova
(Ohio State Univ - Columbus)
In this work we report on two recent experiments to measure ponderomotive electron scattering from Nitrogen and Argon gas at pressures of 1E-4mBar as a potential way to determine the peak laser intensity and characteristics of the focal spots. The first experiment was performed at the CLPU laser facility in Salamanca, Spain where the 1PW VEGA3 laser system was focused to an intensity roughly around 1E20W/cm^2 using an f/10 optic. The second experiment was performed with the Scarlett laser facility at The Ohio State University operating around 180TW where the peak intensity was varied between 1-10E20W/cm^2 using f/2 to f/6 apodizers.
Measurements of the scattered electron distributions using a variety of diagnostics are compared to analytic theory and Monte Carlo simulations.
*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, the National Science Foundation under grant PHY2010392, LaserLab Europe under grant agreement No. 871124, European Union's Horizon 2020 research and innovation programme, LaserNetUS under DOE-FES under Contract DE-SC0021231: the LaserNetUS initiative at the Scarlet Laser Facility, and also supported by the Natural Sciences and Engineering Research Council of Canada (Grant No. RGPIN-2019-05013).
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