19th European Fusion Theory Conference

Session

ORAL SESSION

Oct 12, 2021, 2:30 PM

Virtual in Consorzio RFX

16. The nonadiabatic response of passing electrons and ion-gyroradius-scale electrostatic microinstabilities in the limit of small electron-to-ion mass ratio

michael hardman

10/12/21, 2:30 PM

10. Basic plasma theory

Oral

The passing electron response to ion-gyroradius-scale instabilities is often considered to be adiabatic: on irrational flux surfaces, passing electrons are assumed to be able to transit the entire flux surface on time scales faster than the mode e-folding growth time as a result of the small electron-to-ion mass ratio. This argument fails on mode-rational flux surfaces where magnetic field...