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 BI02: High Energy Density Plasma
9:30 AM–12:30 PM,
Monday, October 17, 2022
Room: Ballroom 100 B
Chair: Charles Starrett, LANL
Abstract: BI02.00005 : Proton stopping power measurements in warm dense matter at low velocity projectile ratio
11:30 AM–12:00 PM
Presenter:
Sophia Malko
(Princeton Plasma Physics Laboratory)
Authors:
Sophia Malko
(Princeton Plasma Physics Laboratory)
Witold CAYZAC
(CEA)
Valeria Ospina-Bohorquez
(CEA)
Krish A Bhutwala
(University of California, San Diego)
Mathieu Bailly-Grandvaux
(University of California, San Diego)
Christopher McGuffey
(University of California, San Diego)
R Fedosejevs
(Univ of Alberta)
Xavier Vaisseau
(CEA)
Anna Tauschwitz
(Frankfurt University, Frankfurt, Germany)
Jon Imanol Apiñaniz Aguinaco
(Centro de Laseres Pulsados (CLPU), Salamanca, Spain.)
Diego De Luis
(CLPU)
Giancarlo Gatti
(CLPU)
Marine Huault
(CLPU)
Jose-Antonio Perez-Hernandez
(CLPU)
Suxing Hu
(Laboratory for Laser Energetics, University of Rochester)
Alexander J White
(Los Alamos Natl Lab)
Lee A Collins
(Los Alamos Natl Lab)
Katarina A Nichols
(University of Rochester)
Paul Neumayer
(GSI)
Gerald Faussurier
(CEA)
Jan Vorberger
(Helmholtz Zentrum Dresden-Rossendorf)
William R Fox
(Princeton Plasma Physics Laboratory)
Brooklyn Frances Kraus
(Princeton Plasma Physics Laboratory)
Derek B Schaeffer
(Princeton University)
Giuseppe Prestopino
(Universit`a di Roma, Rome, Italy)
Claudio Verona
(Universit`a di Roma, Rome, Italy)
Joao J Santos
(University of Bordeaux)
Farhat N Beg
(University of California, San Diego)
Dimitri Batani
(University of Bordeaux, France)
Luis Roso
(CLPU)
Luca Volpe
(CLPU)
Here, we report the first proton energy loss measurements in warm dense plasma at low projectile velocities vp/ vth ≈ 3-10 [1]. The experiment was performed at CLPU VEGA-II laser facility by using a novel high repetition rate platform [2]. The platform is based on the energy selection of a quasi-monoenergetic, short time-duration, proton beam of 500 keV from a broadband proton spectrum. A WDM with a temperature of around 10 eV was generated by femtosecond laser-heating of a thin carbon foil and characterized using two independent spectroscopy diagnostics. Our energy-loss data demonstrate a significant deviation of the stopping power from classical models in this regime. In particular, we show that our results are in closest agreement with recent first-principles simulations based on time-dependent density functional theory [3,4].
[1] S. Malko et al, Nat. Commun.13, 2893 (2022)
[2] J. Apiñaniz et al. Sci. Rep. 11, 6881 (2021)
[3] A. J. White et al., Phys. Rev. B 98, 144302 (2018)
[4] A. J. White et al., Phys. Rev. Lett. 125, 055002 (2020)
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