title: Comparison of anomalous Doppler resonance effects with molybdenum and graphite limiters on HT-7.
abstract: The material of limiter in HT-7 tokamak was changed from graphite to molybdenum in the last experimental campaign. The pitch angle scattering of runaway electrons due to anomalous Doppler resonance effects was observed. The experimental results agree very well with the stable boundary condition expected from the linear resistive theory but only agree with that from the nonlinear evolutionary of runaway-electron distribution theory in low electric field region. The current carried by runaway electrons is the same under different limiter conditions.
authors.affiliation: Institution of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, People's Republic of China.
authors.forename: Y M
authors.initials: YM
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Gao
authors.forename: B L
authors.initials: BL
authors.lastname: Ling
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: S B
authors.initials: SB
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Han
authors.forename: A
authors.initials: A
authors.lastname: Ti
authors.forename: E Z
authors.initials: EZ
authors.lastname: Li