FLYCHK: generalized population kinetics and spectral model for rapid spectroscopic analysis for all elements

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FLYCHK is a straightforward, rapid tool to provide ionization and population distributions of plasmas in zero dimension with accuracy sufficient for most initial estimates and in many cases applicable for more sophisticated analysis. FLYCHK solves rate equations for level population distributions by considering collisional and radiative atomic processes. The code is designed to be straightforward to use and yet is general enough to apply for most laboratory plasmas. Further, it can be applied for low-to-high Z ions and in either steady-state or time-dependent situations. Plasmas with arbitrary electron energy distributions, single or multiple electron temperatures can be studied as well ... continued below

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PDF-file: 37 pages; size: 1.3 Mbytes

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Chung, H; Chen, M; Morgan, W L; Ralchenko, Y & Lee, R W June 17, 2005.

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Description

FLYCHK is a straightforward, rapid tool to provide ionization and population distributions of plasmas in zero dimension with accuracy sufficient for most initial estimates and in many cases applicable for more sophisticated analysis. FLYCHK solves rate equations for level population distributions by considering collisional and radiative atomic processes. The code is designed to be straightforward to use and yet is general enough to apply for most laboratory plasmas. Further, it can be applied for low-to-high Z ions and in either steady-state or time-dependent situations. Plasmas with arbitrary electron energy distributions, single or multiple electron temperatures can be studied as well as radiation-driven plasmas. To achieve this versatility and accuracy in a code that provides rapid response we employ schematic atomic structures, scaled hydrogenic cross-sections and read-in tables. It also employs the jj configuration averaged atomic states and oscillator strengths calculated using the Dirac-Hartree-Slater model for spectrum synthesis. Numerous experimental and calculational comparisons performed in recent years show that FLYCHK provides meaningful estimates of ionization distributions, well within a charge state for most laboratory applications.

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PDF-file: 37 pages; size: 1.3 Mbytes

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  • Journal Name: High Energy Density Physics; Journal Volume: 1; Journal Issue: 1

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  • Report No.: UCRL-JRNL-213347
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 881067
  • Archival Resource Key: ark:/67531/metadc874703

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  • June 17, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 28, 2016, 4:39 p.m.

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Chung, H; Chen, M; Morgan, W L; Ralchenko, Y & Lee, R W. FLYCHK: generalized population kinetics and spectral model for rapid spectroscopic analysis for all elements, article, June 17, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc874703/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.