Results 11 to 20 of about 152 (76)
Super Transition Arrays: A Tool for Studying Spectral Properties of Hot Plasmas
Plasma, 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
Non-Maxwellian electron distributions in time-dependent simulations of low-Z materials illuminated by a high-intensity X-ray laser [PDF]
, 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
Checking the reliability of opacity databases
, 2023 Mathematical inequalities, combined with atomic-physics sum rules, enable one to derive lower and upper bounds for the Rosseland and/or Planck mean opacities. The resulting constraints must be satisfied, either for pure elements or mixtures.
Croset, Patricia, Pain, Jean-Christophe
core +1 more source
Journal 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
A molecular-dynamics approach for studying the non-equilibrium behavior of x-ray-heated solid-density matter [PDF]
, 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
Ablation of Submicrometer Holes Using an Extreme-Ultraviolet Laser [PDF]
, 2015 Simulations and experiments are used to study extreme-ultraviolet (EUV) laser drilling of submicrometer holes. The ablation process is studied with a 2D Eulerian hydrodynamic code that includes bound-free absorption processes relevant to the interaction ...
Aslanyan, Valentin +5 more
core +1 more source
A consistent approach for mixed detailed and statistical calculation of opacities in hot plasmas
, 2011 Absorption and emission spectra of plasmas with multicharged-ions contain transition arrays with a huge number of coalescent electric-dipole (E1) lines, which are well suited for treatment by the unresolved transition array and derivative methods.
Abdallah +21 more
core +1 more source
SpK: A fast atomic and microphysics code for the high-energy-density regime [PDF]
, 2023 SpK is part of the numerical codebase at Imperial College London used to model high energy density physics (HEDP) experiments. SpK is an efficient atomic and microphysics code used to perform detailed configuration accounting calculations of electronic ...
Chapman, DA +6 more
core +2 more sources
Investigation of the 2p3/2-3d5/2 line emission of Au53+ -- Au69+ for diagnosing high energy density plasmas [PDF]
, 2008 Measurements of the L-shell emission of highly charged gold ions were made under controlled laboratory conditions using the SuperEBIT electron beam ion trap, allowing detailed spectral observations of lines from ironlike Au{sup 53+} through neonlike Au ...
Beiersdorfer, P +9 more
core +1 more source
, 2012 A new method, 'Configurationally-Resolved-Super-Transition-Arrays', for calculation of the spectral absorption coefficient in hot plasmas is presented. In the new method, the spectrum of each Super-Transition-Array is evaluated as the Fourier transform ...
Bar Shalom +33 more
core +1 more source