Atomic Charge-Changing Processes in Plasmas

Atomic Data Needs for Modeling Photoionized Plasmas

Many of the fundamental questions in astrophysics can be addressed using spectroscopic observations of photoionized cosmic plasmas. However, the reliability of the inferred astrophysics depends on the accuracy of the underlying atomic data used to interpret the collected spectra. In this paper, we review some of the most glaring atomic data needs for better understanding photoionized plasmas.

Gradient transport processes in E×B plasmas

Various classes of non-quiescent magnetized plasma exhibit anomalous energy and/or momentum diffusivity. In this case, ‘anomalous’ is meant to characterize a transport regime wherein the measured property flux disagrees with classical theory. In most examples anomalous transport is substantially higher than classical expressions predict; it is no different for the Hall accelerator. It has been ...

Nuclear Excitation Processes in Astrophysical Plasmas

Collision Processes in Low-Temperature Hydrogen Plasmas

Collision processes among the constituents of low-temperature hydrogen plasmas (e,H,H,H,H2,H + 2 ,H + 3 ) play a key role in technical plasma applications as well as in the boundary regions of magnetically confined fusion plasmas. In this work a review of the current knowledge on their cross sections is presented. Collision processes of electronically and vibrationally excited species are also ...

Kinetic processes in recombining H3+ plasmas.

Recombination in plasmas containing H(3)(+) ions occurs not only by binary recombination but also by third-body-assisted mechanisms, the principal subject of this contribution. Third-body effects on recombination are of interest for model calculations of hydrogen discharges, their spectral emissions and the inference of binary recombination coefficients from plasma afterglow data.