| 双球近似和速度空间的非平衡相变 |
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| 引用本文： | 李兴中.双球近似和速度空间的非平衡相变[J].核聚变与等离子体物理,1988(3). |
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| 作者姓名： | 李兴中 |
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| 作者单位： | 清华大学物理系 北京 |
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| 摘 要： | 本文在双球近似下,用边界层近似解法求解了磁化等离子体中的反应——扩散方程。结果表明,由扩散项的非线性正反馈同样能导致非平衡相变,而且环流器中的磁面可以不是等电位面。
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| 关 键 词： | 非平衡相变 双球近似环流器 |
TWO-SPHERE APPROXIMATION AND NON-EQUILIBRIUM PHASE TRANSITION IN VELOCITY SPACE |
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| LI Xingzhong.TWO-SPHERE APPROXIMATION AND NON-EQUILIBRIUM PHASE TRANSITION IN VELOCITY SPACE[J].Nuclear Fusion and Plasma Physics,1988(3). |
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| Authors: | LI Xingzhong |
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| Abstract: | A non-equilibrium statistical phenomenon in a magnetized plasma is discussed. With the two-sphere approximation, we solve the reaction-diffusion equation using the "boundary layer approximation method". It shows that the nonlinear positive feedback due to the diffusion term may lead to a non-equilibrium phase transition.It is concluded that the magnetic surface in a tokamak may not be an isobaric surface of constant electrostatic potential. |
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| Keywords: | Non-equilibrium phase transition Two-sphere approximation |
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