Time‐dependent charged particle stopping in quantum plasmas: testing the G1–G2 scheme for quasi‐one‐dimensional systems

Abstract

Warm dense matter—an exotic, highly compressed state on the border between solid and plasma phases is of high current interest, in particular for compact astrophysical objects, high‐pressure laboratory systems, and inertial confinement fusion. For many applications, the interaction of quantum plasmas with energetic particles is crucial. Moreover, often the system is driven far out of equilibrium. In that case, there is high interest in time‐dependent simulations to understand the physics, in particular, during thermalization. Recently a novel many‐particle technique, the G1–G2 scheme was presented with reference to the study by Schlünzen et al. (2020) which allows for first‐principle simulations of the time evolution of interacting quantum systems. Here we apply this scheme to a spatially uniform dense quantum plasma (jellium) and explore its performance. To this end, the G1–G2 scheme is transformed into momentum representation, and first results are presented for a quasi‐one‐dimensional model system.

Quantum computation of stopping power for inertial fusion target design

“…Broadly, the stopping power models that are applied in the WDM regime fall into four categories: 1) highly detailed multiatom first-principles models ( 52 – 56 ), 2) highly efficient average-atom models ( 40 , 56 , 57 ), 3) models based on variants of the uniform electron gas ( 58 – 63 ), and 4) classical or semiclassical models ( 64 – 68 ). Type-(2), (3), and (4) models can be efficient enough to tabulate results across the wide range of thermodynamic conditions required by radiation-hydrodynamic codes that support ICF development, or even evaluated inline ( 69 ).…”