scholarly journals Thomas–Fermi-like and average atom model equations of state for highly compressed matter at any temperature

1992 ◽  
Vol 10 (2) ◽  
pp. 263-275 ◽  
Author(s):  
P. Friomy ◽  
C. Deutsch ◽  
G. Maynard
Keyword(s):  
Equations Of State ◽  
Temperature Behaviour ◽  
Thomas Fermi ◽  
Exchange Correlation ◽  
Analytic Approximations ◽  
Atomic Properties ◽  
Atom Model ◽  
Gradient Corrections ◽  
Model Equations ◽  
Average Atom Model

We develop a systematic comparison of thermodynamical and atomic properties computed within the three (TF, TFD, and TFDW) Thomas-Fermi modellings with results obtained from the average atom model. A special emphasis is placed on using the same analytic approximations for exchange, correlation, and gradient corrections. Analogies and discrepancies with respect to temperature behaviour are also stressed.

scholarly journals Calculations of radiation opacity for high Z elements

1990 ◽  
Vol 8 (1-2) ◽  
pp. 265-279 ◽  
Author(s):  
Tomasz Błeński ◽  
Jacques Ligou
Keyword(s):  
Cross Sections ◽  
Temperature Dependent ◽  
Absorption Bands ◽  
Thomas Fermi ◽  
Model Based ◽  
Atom Model ◽  
Independent Particle ◽  
Average Atom Model

We present some results of our opacity calculations for lead and gold at temperatures and densities relevant to ICF conditions. We use an average atom model based on the temperature dependent Thomas-Fermi shell approach. The absorption bands (broadening of lines) are accounted for with a simple T.F. fluctuation formula. The independent particle bound-bound, bound-free, and free-free photon cross-sections are taken without further approximations.

Dielectronic Recombination in the Average-Atom Model

1988 ◽  
Vol 102 ◽  
pp. 215
Author(s):  
R.M. More ◽  
G.B. Zimmerman ◽  
Z. Zinamon
Keyword(s):  
Detailed Balance ◽  
Systematic Errors ◽  
Dielectronic Recombination ◽  
Rate Equations ◽  
Strong Correlations ◽  
Dense Plasmas ◽  
Atom Model ◽  
New Feature ◽  
Average Atom Model ◽  
Attachment Process

Autoionization and dielectronic attachment are usually omitted from rate equations for the non–LTE average–atom model, causing systematic errors in predicted ionization states and electronic populations for atoms in hot dense plasmas produced by laser irradiation of solid targets. We formulate a method by which dielectronic recombination can be included in average–atom calculations without conflict with the principle of detailed balance. The essential new feature in this extended average atom model is a treatment of strong correlations of electron populations induced by the dielectronic attachment process.

DIELECTRONIC RECOMBINATION IN THE AVERAGE-ATOM MODEL

1988 ◽  
Vol 49 (C1) ◽  
pp. C1-215-C1-215
Author(s):  
R. M. MORE ◽  
G. B. ZIMMERMAN ◽  
Z. ZINAMON
Keyword(s):  
Dielectronic Recombination ◽  
Atom Model ◽  
Average Atom Model

Carbon ionization from a quantum average-atom model up to gigabar pressures

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Gérald Faussurier ◽  
Christophe Blancard ◽  
Mandy Bethkenhagen
Keyword(s):  
Atom Model ◽  
Average Atom Model

scholarly journals Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS) for FAIR-NICA-SPSBES/RHIC energies

2018 ◽  
Vol 182 ◽  
pp. 02056 ◽  
Author(s):  
P. Batyuk ◽  
D. Blaschke ◽  
M. Bleicher ◽  
Yu.B. Ivanov ◽  
Iu. Karpenko ◽  
...  
Keyword(s):  
Equations Of State ◽  
Transport Model ◽  
Event Generator ◽  
Final State ◽  
First Order Phase Transition ◽  
First Results ◽  
Rapidity Distributions ◽  
Final State Interactions ◽  
Model Equations ◽  
Fluid Hydrodynamics

We present a new event generator based on the three-fluid hydrodynamics (3FH) approach, followed by a particlization at the hydrodynamic decoupling surface and a subsequent UrQMD afterburner stage based on the microscopic UrQMD transport model that accounts for hadronic final state interactions. First results for Au+Au collisions are presented. The following topics are addressed: the directed flow, transversemass spectra, as well as rapidity distributions of protons, pions and kaons for two model equations of state, one with a first-order phase transition, the other with a crossover transition. Preliminary results on the femtoscopy are also discussed.We analyze the accuracy of reproduction of the 3FH results by the new event generator and the effect of the subsequent UrQMD afterburner stage.

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