Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (4): 67 doi: 10.1007/s41365-019-0592-4

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Non-equilibrium ignition criterion for magnetized deuterium-tritium fuel

E. Ghorbanpour1 • A. Ghasemizad1 • S. Khoshbinfar1   

  1. 1 Department of Physics, Faculty of Science, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
  • Received:2018-03-19 Revised:2018-08-25 Accepted:2018-09-06
  • Contact: E. Ghorbanpour;
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E. Ghorbanpour , A. Ghasemizad, S. Khoshbinfar. Non-equilibrium ignition criterion for magnetized deuterium-tritium fuel.Nuclear Science and Techniques, 2019, 30(4): 67     doi: 10.1007/s41365-019-0592-4

Abstract: In this paper, non-equilibrium ignition conditions for magnetized cylindrical deuterium–tritium plasma in the presence of an axial magnetic field have been investigated. It is expected that temperature imbalance between ions and electrons as well as the axial magnetic field will relax the threshold of ignition conditions. Therefore, ignition conditions for this model are derived numerically involving the energy balance equation at the stagnation point. It has been derived using parametric space including electron and ion temperature (Te, Ti), areal density (ρR), and seed magnetic field-dependent free parameters of B/ρ, mB, and BR. For B/ρ<106 G cm3 g-1, mB<4×104 G cm g-1, and BR<3×105 G cm, the minimum fuel areal density exceeds between ρR>0.002 g cm-2, ρR>0.25 g cm-2, and ρR>0.02 g cm-2, respectively. The practical equilibrium conditions also addressed which is in good agreement with the corresponding one-temperature magnetized mode proposed in previous studies. Moreover, it has been shown that the typical criterion of BR≥(6.13–4.64)×105 G cm would be expectable. It is also confirmed that the minimum product of areal density times fuel temperature in equilibrium model is located in the range of T = 6–8 keV for all these free parameters, depending on the magnitude of the magnetic field. This is the entry point for the non-equilibrium model consistent with equilibrium model.

Key words: Magnetized plasma, Two-temperature model, Ion–electron non-equilibrium, Axial magnetic field, Ignition criteria