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A study on combined effects of stochastic magnetic fluctuations and synchrotron radiation on the production of runaway electrons

Shucai Li, Lu Wang, Z Y Chen, D W Huang, Weixin Guo, R H Tong, F T Cui2017年Plasma Physics and Controlled FusionIF 2.2出版社

The dynamics of relativistic runaway electrons are analyzed using the relativistic Fokker–Planck equation including deceleration due to the synchrotron radiation and radial diffusion loss caused by stochastic magnetic fluctuations (SMFs). SMFs are treated as friction force in (Martín-Solís et al 1999 Phys. Plasmas6 3925). However, we think SMFs act as a 'porter' in configuration space, but do not directly affect the runaway electrons (REs) in momentum space. Both critical electric fields for sustainment of the existing REs and for avalanche onset are enhanced, and the modified avalanche growth rate is reduced by the combined effects of SMFs and synchrotron radiation as compared to the case with only synchrotron radiation (Aleynikov et al 2015 Phys. Rev. Lett.114 155001).

日本語訳

相対論的逃走電子のダイナミクスは、シンクロトロン放射による減速と、確率的磁場変動(SMF)によって引き起こされる径方向拡散損失を含む相対論的フォッカー・プランク方程式を用いて解析される。SMFは(Martín-Solís et al 1999 Phys. Plasmas 6 3925)において摩擦力として扱われている。しかしながら、我々はSMFが配置空間における「ポーター」として作用し、運動量空間における逃走電子(RE)に直接影響を及ぼさないと考える。既存REの維持およびアバランシェ開始の両方に対する臨界電場は増強され、修正されたアバランシェ成長率は、シンクロトロン放射のみの場合(Aleynikov et al 2015 Phys. Rev. Lett. 114 155001)と比較して、SMFとシンクロトロン放射の複合効果により減少する。

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Runaway electronMagnetic fluctuationsSynchrotron radiation
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