Home > Workflow collections > Publication Charges > Mechanism of runaway electron beam formation during plasma disruptions in tokamaks > print |
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100 | 1 | _ | |a Abdullaev, S. S. |0 P:(DE-HGF)0 |b 0 |e Corresponding Author |
245 | _ | _ | |a Mechanism of runaway electron beam formation during plasma disruptions in tokamaks |
260 | _ | _ | |a [S.l.] |c 2015 |b American Institute of Physics |
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520 | _ | _ | |a A new physical mechanism of formation of runaway electron beams during plasma disruptions in tokamaks is proposed. The plasma disruption is caused by a strong stochastic magnetic field formed due to nonlinearly excited low-mode number magnetohydrodynamic (MHD) modes. It is conjectured that the runaway electron beam is formed in the central plasma region confined inside the intact magnetic surface located between q = 1 and the closest low–order rational magnetic surfaces [q = 5/4 or q = 4/3,…]. It results in that runaway electron beam current has a helical nature with a predominant m/n = 1/1 component. The thermal quench and current quench times are estimated using the collisional models for electron diffusion and ambipolar particle transport in a stochastic magnetic field, respectively. Possible mechanisms for the decay of the runaway electron current owing to an outward drift electron orbits and resonance interaction of high–energy electrons with the m/n = 1/1 MHD mode are discussed. |
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700 | 1 | _ | |a Koslowski, H. R. |0 0000-0002-1571-6269 |b 4 |
700 | 1 | _ | |a Willi, O. |0 P:(DE-HGF)0 |b 5 |
700 | 1 | _ | |a Zeng, L. |0 P:(DE-Juel1)145673 |b 6 |
773 | _ | _ | |a 10.1063/1.4919253 |g Vol. 22, no. 4, p. 040704 - |0 PERI:(DE-600)1472746-8 |n 4 |p 040704 |t Physics of plasmas |v 22 |y 2015 |x 1089-7674 |
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