Major Features of PROPACEOS

Some of the primary capabilities of the PROPACEOS code are listed below.

• Computes equation-of-state (EOS) and opacity data for single-element or multi-element plasmas.
• Includes an easy-to-use graphical user interface for problem setup and viewing results.
• Includes on-line documentation, including direct access to Help pages from widgets.
• Computes EOS and opacity data for LTE plasmas and several types of non-LTE plasmas. Non-LTE plasma include:
  • Optically thin plasmas (photoexcitation and photoionization are ignored in the calculation of atomic level populations)
  • Finite size plasmas (photoexcitation and photoionization are included in the calculation of atomic level populations using a plasma characteristic size)
  • Plasmas which include a hot electron component (which can alter inner-shell emission spectra via collisional excitation and ionization)
• Supports the use of simple and custom grids for:
  • Temperature
  • Density
  • Plasma size
  • Update 3 parameters used to define a hot electron component
  • Photon energy
• Separate grids can be used for the EOS and opacity calculations.
• High density effects are accounted for by including an optional QEOS model.
• Includes graphics package for visualizing results for:
  • Frequency-dependent opacities
  • Equation-of-state parameters
• Includes the following atomic processes in collisional-radiative modeling:
  • Collisional ionization, recombination, excitation, and deexcitation
  • Photoionization and stimulated recombination
  • Photoexcitation and stimulated emission
  • Spontaneous decay
  • Radiative recombination
  • Dielectronic recombination, autoionization, and electron capture
• Multipliers can be applied to the rate coefficients for the above processes.
• Includes Doppler, natural (including autoionization contributions), and Stark broadening in line profile modeling.
• Utilizes ATBASE suite of atomic codes for supplying:
  • Photoionization cross-sections
  • Oscillator strengths
  • Collisional ionization cross-sections
  • Collisional excitation cross-sections
  • Atomic level energies and transition energies
  • Dielectronic recombination, autoionization, and electron capture rates.
  • Incorporates NIST atomic level energies and oscillator strengths when available.
• Can be used to view previously calculated PROPACEOS data files or SESAME files
• Interfaces with other applications:
  • AtomicModelBuilder: a user-friendly tool for setting up custom atomic models.
  • PrismPLOT: a graphics tool for viewing calculation results.
• Can be run in batch mode with an existing workspace.
• Features graphics that can be launched directly from HELIOS.