Quasi-linear analysis of whistler waves driven by a relativistic runaway beam in Tokamaks

dc.contributor.authorMashaei, Maziar
dc.contributor.departmentChalmers tekniska högskola / Institutionen för signaler och systemsv
dc.contributor.departmentChalmers University of Technology / Department of Signals and Systemsen
dc.description.abstractA beam of highly relativistic runaway electrons can be generated during the current quench in a Tokamak disruption. Having energy of several MeV, these energetic electrons can cause damage to the inner wall of a Tokamak vessel. Concerning this dramatic event, a diffusion of runaway electrons toward a lower velocity is desirable. In this study, an investigation of the secondary runaway electrons diffusion caused by whistler waves is carried out. First, an instability growth rate for whistler waves due to the Doppler resonance with runaway electrons is obtained. In addition, a quasi-linear equation for the runaway electrons velocity distribution function is formed and its solution is given for mode number 1 by using the whistler wave dispersion relation and growth rate. Finally, the validity of the solution for a range of the electron energy is investigated.
dc.relation.ispartofseriesRadio and Space Science - Internal Technical Report
dc.subjectTeknisk fysik
dc.subjectEngineering physics
dc.titleQuasi-linear analysis of whistler waves driven by a relativistic runaway beam in Tokamaks
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
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