Highly efficient sparse-matrix inversion techniques and average procedures applied to collisional-radiative codes [PDF]
, 2009 The behavior of non-local thermal-equilibrium (NLTE) plasmas plays a central role in many fields of modern-day physics, such as laser-produced plasmas, astrophysics, inertial or magnetic confinement fusion devices, or X-ray sources. The proper description of these media in stationary cases requires to solve linear systems of thousands or more rate ...
arxiv +1 more source
Extreme ultraviolet emission from dense plasmas generated with sub-10-fs laser pulses [PDF]
, 2008 The extreme ultraviolet (XUV) emission from dense plasmas generated with sub-10-fs laser pulses with varying peak intensities up to 3*10^16 W/cm^2 is investigated for different target materials. K shell spectra are obtained from low Z targets (carbon and
A. Pipahl +11 more
core +2 more sources
Thermodynamic coherence of the Variational Average-Atom in Quantum Plasmas (VAAQP) approach
, 2009 A new code called VAAQP (Variational Average-Atom in Quantum Plasmas) is reported. The model as well as main results of previous studies are briefly recalled. The code is based on a new fully variational model of dense plasmas at equilibrium with quantum
B. Cichocki +16 more
core +1 more source
A model of dense-plasma atomic structure for equation-of-state calculations [PDF]
arXiv, 2007 A model of dense plasmas relying on the superconfiguration approximation is presented. In each superconfiguration the nucleus is totally screened by the electrons in a Wigner-Seitz sphere (ion-sphere model). Superconfigurations of the same charge are grouped into ions.
arxiv
Self-consistent modelling of hot plasmas within non-extensive Tsallis' thermostatistics
, 2011 A study of the effects of non-extensivity on the modelling of atomic physics in hot dense plasmas is proposed within Tsallis' statistics. The electronic structure of the plasma is calculated through an average-atom model based on the minimization of the ...
A.R. Plastino +26 more
core +1 more source
Hybrid atomic models for spectroscopic plasma diagnostics [PDF]
, 2006 We propose a hybrid approach to treating atomic structure and rates in collisional-radiative models, combining the completeness of highly averaged models with the accuracy of detailed models.
Bauche, J +3 more
core
Effect of incoming radiation on the non-LTE spectrum of Xe at Te = 100 eV
, 2011 The effect of a diluted Planckian radiation field on a Xe gas at the electron temperature of 100 eV is investigated within the framework of a Collisional Radiative Model, using the HULLAC code.
Bailey +24 more
core +1 more source
Faster Algorithms for Weighted Recursive State Machines
, 2017 Pushdown systems (PDSs) and recursive state machines (RSMs), which are linearly equivalent, are standard models for interprocedural analysis. Yet RSMs are more convenient as they (a) explicitly model function calls and returns, and (b) specify many ...
A Bouajjani +20 more
core +1 more source
Detailed Opacity Calculations for Stellar Models
, 2018 Radiative opacity is an important quantity in the modeling of stellar structure and evolution. In the present work we recall the role of opacity in the interpretation of pulsations of different kinds of stars.
Comet, Maxime +2 more
core
Excited States in Warm and Hot Dense Matter
, 2023 Accurate modeling of warm and hot dense matter is challenging in part due to the multitude of excited states that must be considered. In thermal density functional theory, these excited states are averaged over to produce a single, averaged, thermal ...
Fontes, C. J. +3 more
core