Penetrating collisions in hydrogen spectral line broadening by plasmas

Journal Article · 10 January 2020 · High Energy Density Physics

DOI: https://doi.org/10.1016/j.hedp.2020.100743 · OSTI ID:1592986

Iglesias, Carlos A. ^[1]

---

1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Spectral line Stark broadening calculations in the “standard theory” typically retain only the long-ranged dipole term in the interaction between the perturbing plasma and emitting or absorbing atom. Thus, penetrating collisions as well as higher multipoles are neglected. The full Coulomb interaction is applied to hydrogen lines using a quantum mechanical treatment. Furthermore, it is found that the line widths from the quantum mechanical approach moderately disagree with earlier semi-classical treatment of penetrating collisions.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE; USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-07NA27344
• OSTI ID: 1592986
• Report Number(s): LLNL-JRNL--794178; 993727
• Journal Information: High Energy Density Physics, Journal Name: High Energy Density Physics Journal Issue: C Vol. 35; ISSN 1574-1818
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English