Ionization Rates and Power Loss from θ‐Pinches by Impurity Radiation
Ionization Rates and Power Loss from θ‐Pinches by Impurity Radiation
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DOI：
10.1063/1.1711232
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发表时间：
1964-04
影响因子：
4.6
通讯作者：
A. Kolb;R. Mcwhirter
中科院分区：
文献类型：
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作者：
A. Kolb;R. Mcwhirter
计算了氘等离子体磁压缩过程中杂质浓度小对能量平衡和电子温度的影响。描述电离的速率方程是建立在电晕等离子体模型的基础上的，其方法与先前假设的均匀等离子体的方法大致相同。尽管这些等离子体中的电子密度相对较高（> 1016 cm−3），但由于温度超过~ 10 eV时离子电荷较高，因此该模型应该是适用的。通过耦合Hain - Roberts双流体、磁流体方程和Corona方程，得到了径向温度和密度分布。可以考虑多达四种不同杂质的电离，即C， N， O, Ne。电子能量平衡方程中包含了辐射损失，但忽略了杂质电离对电子密度和电导率的影响。因此，只有小的杂质浓度才能…
Calculations are presented for the influence of small impurity concentrations on the energy balance and electron temperature during the magnetic compression of a deuterium plasma. The rate equations which describe the ionization are based on the Corona Plasma Model in much the same way as has been done earlier for a plasma assumed to be homogeneous.Despite the comparatively high electron densities (≳1016 cm−3) in these plasmas, this model should be applicable because of the high ionic charge at temperatures over ∼10 eV. The radial temperature and density distributions were obtained numerically by coupling the Hain‐Roberts two‐fluid, hydromagnetic equations to the Corona equations. The ionization of up to four different impurities, i.e., C, N, O, Ne, can be taken into account. Radiation losses were included in the electron energy‐balance equation, but the influence of impurity ionization on the electron density and electrical conductivity was neglected. Therefore, only small impurity concentrations can be ...