Analyses of electron runaway in front of the negative streamer channel
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017ja023917
Abstract: X-and γ-ray emissions, observed in correlation with negative leaders of lightning and long sparks of high-voltage laboratory experiments, are conventionally connected with the bremsstrahlung of high-energy runaway electrons (REs). Here we extend a focusing mechanism,… read more here.
Keywords: ionization wave; channel; electron runaway; streamer ... See more keywords
Dynamics of positrons during relativistic electron runaway
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377818001010
Abstract: Sufficiently strong electric fields in plasmas can accelerate charged particles to relativistic energies. In this paper we describe the dynamics of positrons accelerated in such electric fields, and calculate the fraction of created positrons that… read more here.
Keywords: production; dynamics positrons; electron runaway; positrons relativistic ... See more keywords
Electron runaway in ASDEX Upgrade experiments of varying core temperature
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377821000416
Abstract: The formation of a substantial postdisruption runaway electron current in ASDEX Upgrade material injection experiments is determined by avalanche multiplication of a small seed population of runaway electrons. For the investigation of these scenarios, the… read more here.
Keywords: runaway current; asdex; asdex upgrade; temperature ... See more keywords