Results 11 to 20 of about 162 (82)

Multi-Configuration Calculation of Ionization Potential Depression

open access: yesPlasma, 2022
The modelling of ionization potential depression in warm and hot dense plasmas constitutes a real theoretical challenge due to ionic coupling and electron degeneracy effects.
Jean-Christophe Pain
doaj   +1 more source

Super Transition Arrays: A Tool for Studying Spectral Properties of Hot Plasmas

open access: yesPlasma, 2021
For the theoretical study of X and extreme-UV spectra of ions in plasmas, quantum mechanics brings more detailed results than statistical physics. However, it is impossible to handle individually the billions of levels that must be taken into account in ...
Jean-Christophe Pain
doaj   +1 more source

The number of populated electronic configurations in a hot dense plasma [PDF]

open access: yesPhys. Rev. E 103, 033206 (2021), 2021
In hot dense plasmas of intermediate or high-Z elements in the state of local thermodynamic equilibrium, the number of electronic configurations contributing to key macroscopic quantities such as the spectral opacity and equation of state, can be enormous.
arxiv   +1 more source

An Enhanced Genetic Algorithm to Solve the Static and Multistage Transmission Network Expansion Planning

open access: yesJournal of Electrical and Computer Engineering, Volume 2012, Issue 1, 2012., 2012
An enhanced genetic algorithm (EGA) is applied to solve the long‐term transmission expansion planning (LTTEP) problem. The following characteristics of the proposed EGA to solve the static and multistage LTTEP problem are presented, (1) generation of an initial population using fast, efficient heuristic algorithms, (2) better implementation of the ...
Luis A. Gallego   +4 more
wiley   +1 more source

Non-Maxwellian electron distributions in time-dependent simulations of low-Z materials illuminated by a high-intensity X-ray laser [PDF]

open access: yes, 2013
The interaction of high intensity X-ray lasers with matter is modeled. A collisional-radiative timedependent module is implemented to study radiation transport in matter from ultrashort and ultraintense X-ray bursts.
Abdallah   +32 more
core   +2 more sources

Measurement of XUV-absorption spectra of ZnS radiatively heated foils [PDF]

open access: yesDans High Energy Density Physics - Radiative Properties of Hot Dense Matter 2006, Albufeira : Portugal (2006), 2008
Time-resolved absorption of zinc sulfide (ZnS) and aluminum in the XUV-range has been measured. Thin foils in conditions close to local thermodynamic equilibrium were heated by radiation from laser-irradiated gold spherical cavities. Analysis of the aluminum foil radiative hydrodynamic expansion, based on the detailed atomic calculations of its ...
arxiv   +1 more source

The STAG Code: A Fully Relativistic Super Transition Array Calculation Using Green's Functions [PDF]

open access: yesarXiv, 2023
Calculating opacities for a wide range of plasma conditions (i.e. temperature, density, element) requires detailed knowledge of the plasma configuration space and electronic structure. For plasmas composed of heavier elements, relativistic effects are important in both the electronic structure and the details of opacity spectra.
arxiv  

A molecular-dynamics approach for studying the non-equilibrium behavior of x-ray-heated solid-density matter [PDF]

open access: yes, 2017
When matter is exposed to a high-intensity x-ray free-electron-laser pulse, the x rays excite inner-shell electrons leading to the ionization of the electrons through various atomic processes and creating high-energy-density plasma, i.e., warm or hot ...
Abdullah, Malik Muhammad   +4 more
core   +1 more source

Passively mobile communicating machines that use restricted space [PDF]

open access: yes, 2010
We propose a new theoretical model for passively mobile Wireless Sensor Networks, called PM, standing for Passively mobile Machines. The main modification w.r.t. the Population Protocol model [Angluin et al. 2006] is that the agents now, instead of being
Alberts   +31 more
core   +3 more sources

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