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22-27 October 2018
Mahatma Mandir Conference Centre
Asia/Kolkata timezone
CONFERENCE MATERIAL NOW AVAILABLE!

Energy loss and pitch angle scattering of runaway electrons due to kinetic instabilities

26 Oct 2018, 14:00
4h 45m
Mahatma Mandir Conference Centre

Mahatma Mandir Conference Centre

Gandhinagar (nearest Airport: Ahmedabad), India
Poster P8 Posters

Speaker

Chang Liu (Princeton Plasma Physics Laboratory)

Description

The effects of kinetic instabilities on the dynamics of runaway electrons in momentum space is investigated using a newly-developed simulation model, and the anomalous dissipation and the fast pitch angle scattering of runaway electrons in low energy are explained. The interaction of runaway electron avalanche and the kinetic instabilities are studied self-consistently using quasilinear model. Results show that excited whistler waves can cause runaway electrons to be scattered to large pitch angle and form vortices in momentum space, creating a new energy loss channel, which explains the higher-than-expected critical electric field and the loss of runaway electron population in low energy regime identified experimentally. This finding also explains the fast growth of electron cyclotron emission (ECE) signals observed in experiments.
Country or International Organization United States of America
Paper Number TH/P8-16

Primary author

Chang Liu (Princeton Plasma Physics Laboratory)

Co-authors

Prof. Amitava Bhattacharjee (Princeton Plasma Physics Laboratory) Dr Carlos Paz-Soldan (General Atomics) Dr Dylan Brennan (Princeton University) Dr Eero Hirvijoki (Princeton Plasma Physics Laboratory) Dr Guoyong Fu (Zhejiang University)

Presentation Materials

Paper