Since 18 of December 2019 conferences.iaea.org uses Nucleus credentials. Visit our help pages for information on how to Register and Sign-in using Nucleus.

15–19 May 2023
Vienna International Centre
Europe/Vienna timezone

Two-photon processes and their minor contribution to the Sandia Z-pinch Iron opacity experiments

19 May 2023, 14:40
20m
Board Room A (Vienna International Centre)

Board Room A

Vienna International Centre

Wagramer Strasse 5, Vienna, Austria A-1400
High Energy Density Plasmas and Powerful Light Sources High Energy Density Plasmas and Powerful Light Sources

Speaker

Michael Kruse (Lawrence Livermore National Laboratory)

Description

The discrepancies between theoretically calculated and experimentally measured Iron opacities at the Sandia National Laboratory Z-pinch machine are hitherto still unexplained even after nearly a decade of effort. Theoretical opacities have neglected higher-order processes such as two-photon processes, i.e., two-photon ionization or Raleigh and Raman scattering and thus could be a potential additional source of opacity that may lessen the disagreement with experimental measurements. We will present a summary of our two-photon ionization calculations in which we conclude that two-photon absorption cannot explain the bound-free discrepancy between experiment and theory, and then move on to show previously unreported calculations for the elastic (Raleigh) and inelastic (Raman) scattering contributions for the measured 2-4 Ne-like Iron lines.

This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. LLNL-ABS-XXXXX

Presenting Author Michael Kruse
Presenting Author Email Address kruse9@llnl.gov
Presenting Author Affiliation Lawrence Livermore National Laboratory
Country United States of America
Presenting Author Gender Prefer not to state

Primary author

Michael Kruse (Lawrence Livermore National Laboratory)

Co-author

Carlos Iglesias (LLNL)

Presentation materials

There are no materials yet.