Simulations of the energy loss of ions at the stopping-power maximum in a laser-induced plasma

Abstract

Abstract. Simulations have been performed to study the energy loss of carbon ions in a hot, laser-generated plasma in the velocity region of the stopping-power maximum. In this parameter range, discrepancies of up to 30 % exist between the various stopping theories and hardly any experimental data are available. The considered plasma, created by irradiating a thin carbon foil with two high-energy laser beams, is fully-ionized with a temperature of nearly 200 eV. To study the interaction at the maximum stopping power, Monte-Carlo calculations of the ion charge state in the plasma are carried out at a projectile energy of 0.5 MeV per nucleon. The predictions of various stopping-power theories are compared and experimental campaigns are planned for a first-time theory benchmarking in this low-velocity range.

Ab Initio Studies on the Stopping Power of Warm Dense Matter with Time-Dependent Orbital-Free Density Functional Theory

“…For example, recent stopping-power experiments [46,47] performed with warm dense plasmas (T > T F ) present particular difficulties. Despite these and other experiments [48][49][50], as well as theoretical studies [14][15][16][51][52][53], a stringent test of stopping-power models with first-principles simulations in the WDM regime remains elusive.…”

Inertial confinement fusion for energy: overview of the ongoing experimental, theoretical and numerical studies

“…To remove some uncertainty about the early stages of inertial fusion implosions, experiments on ion stopping powers in well-characterized WDM have been finally designed or conducted worldwide (for instance in Japan at the Extreme Energy Density Research Institute (EDI) of the Nagaoka University of Technology, in the United States on the OMEGA laser facility, in France and also in Germany at the GSI Z6 station [57][58][59]).…”