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首页> 外文期刊>The Open Plasma Physics Journal >Inhomogeneity Effect on Solitary Structures in a Magnetized Warm Plasma: Ionization Versus Recombination
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Inhomogeneity Effect on Solitary Structures in a Magnetized Warm Plasma: Ionization Versus Recombination

机译：磁化热等离子体中的孤立结构上的不均匀效应：电离与重组。

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In a magnetized inhomogeneous warm plasma having ionization/recombination, usual version of the KdVequation is found to be modified by two additional terms arising due to the inclusion of ionization/recombination and thedensity gradient in the plasma. The density gradient in the plasma shows its dependence on the ionization/recombinationrate, ion-to-electron temperature ratio, obliqueness of the magnetic field and drift velocity of the ions. In the consideredplasma, only the compressive solitary structures are found to propagate corresponding to two different types of modes. Asignificant effect of magnetic field and ion temperature is found on these structures in both the cases of ionization andrecombination, though these structures show weak dependence on the charge of the ions. Interestingly the solitons withprominent tailing structures are evolved in the plasma under the effect of stronger density gradient and higher ionizationor recombination. The tailing structure with bigger size evolves in the plasma in the case of only recombination,suggesting that the exchange/transfer of energy from the main soliton to its tail is on a greater scale in the case ofrecombination than the case of ionization. There exists a critical value of the ionization rate at which the tailing structureassociated with only the fast (not slow) solitary structure is vanished. Similarly, the tailing structure associated with onlythe slow (not fast) solitary structure is disappeared at a critical value of recombination rate.
机译：在具有电离/重组的磁化不均匀热等离子体中，由于等离子体中包含了电离/重组和密度梯度，因此发现KdVequation的常规形式被两个附加项修饰。等离子体中的密度梯度显示出其对电离/复合率，离子与电子的温度比，磁场的倾斜度和离子的漂移速度的依赖性。在所考虑的等离子中，仅发现压缩的孤立结构与两种不同类型的模式相对应地传播。在电离和重组的情况下，虽然这些结构显示出对离子电荷的弱依赖性，但在这些结构上都发现了磁场和离子温度的显着影响。有趣的是，在较强的密度梯度和较高的电离或重组作用下，具有突出拖尾结构的孤子在等离子体中演化。仅在重组的情况下，等离子体中会形成尺寸更大的尾部结构，这表明在重组的情况下，从主孤子到尾部的能量交换/转移比电离的情况更大。电离速率存在一个临界值，在该临界值下，仅与快速（而非慢速）孤立结构相关的拖尾结构消失了。类似地，仅与缓慢的（非快速的）孤立结构相关的拖尾结构以重组速率的临界值消失。

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