Proton stopping measurements at low velocity in warm dense carbon

S. Malko (), W. Cayzac, V. Ospina-Bohórquez, K. Bhutwala, M. Bailly-Grandvaux, C. McGuffey, R. Fedosejevs, X. Vaisseau, An. Tauschwitz, J. I. Apiñaniz, D. Luis Blanco, G. Gatti, M. Huault, J. A. Perez Hernandez, S. X. Hu, A. J. White, L. A. Collins, K. Nichols, P. Neumayer, G. Faussurier, J. Vorberger, G. Prestopino, C. Verona, J. J. Santos, D. Batani, F. N. Beg, L. Roso and L. Volpe
Additional contact information
S. Malko: Parque Cientifico
W. Cayzac: DAM, DIF
V. Ospina-Bohórquez: DAM, DIF
K. Bhutwala: University of California San Diego
M. Bailly-Grandvaux: University of California San Diego
C. McGuffey: University of California San Diego
R. Fedosejevs: University of Alberta, Department of Electrical and Computing Engineering. Edmonton
X. Vaisseau: DAM, DIF
An. Tauschwitz: Goethe-Universität Frankfurt am Main
J. I. Apiñaniz: Parque Cientifico
D. Luis Blanco: Parque Cientifico
G. Gatti: Parque Cientifico
M. Huault: Parque Cientifico
J. A. Perez Hernandez: Parque Cientifico
S. X. Hu: University of Rochester
A. J. White: Los Alamos National Laboratory
L. A. Collins: Los Alamos National Laboratory
K. Nichols: University of Rochester
P. Neumayer: GSI Helmholtzzentrum für Schwerionenforschung GmbH
G. Faussurier: DAM, DIF
J. Vorberger: Helmholtz-Zentrum Dresden-Rossendorf
G. Prestopino: Universitá di Roma “Tor Vergata”
C. Verona: Universitá di Roma “Tor Vergata”
J. J. Santos: University of Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications)
D. Batani: University of Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications)
F. N. Beg: University of California San Diego
L. Roso: Parque Cientifico
L. Volpe: Parque Cientifico

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Ion stopping in warm dense matter is a process of fundamental importance for the understanding of the properties of dense plasmas, the realization and the interpretation of experiments involving ion-beam-heated warm dense matter samples, and for inertial confinement fusion research. The theoretical description of the ion stopping power in warm dense matter is difficult notably due to electron coupling and degeneracy, and measurements are still largely missing. In particular, the low-velocity stopping range, that features the largest modelling uncertainties, remains virtually unexplored. Here, we report proton energy-loss measurements in warm dense plasma at unprecedented low projectile velocities. Our energy-loss data, combined with a precise target characterization based on plasma-emission measurements using two independent spectroscopy diagnostics, 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.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30472-8

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DOI: 10.1038/s41467-022-30472-8

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