Observation of Ion-Acoustic Rarefaction Solitons in a Multicomponent Plasma with Negative Ions
Observation of Ion-Acoustic Rarefaction Solitons in a Multicomponent Plasma with Negative Ions
复制标题
负离子多元等离子体中离子声稀疏孤立子的观测
DOI：
10.1103/physrevlett.52.275
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发表时间：
1983
影响因子：
8.6
通讯作者：
Y. Nakamura
中科院分区：
文献类型：
--
作者：
G. O. Ludwig;J. L. Ferreira;Y. Nakamura
观察到离子-声孤子在含有负离子的等离子体中的传播。对于足够大的负离子浓度，外加稀薄(负)电压脉冲分解为孤子，而压缩脉冲演化为波列，其行为与仅由正离子组成的等离子体的行为完全相反。有一个负离子浓度的临界值，在这个临界值下，有限幅度脉冲在不变陡的情况下传播。
The propagation of ion-acoustic solitons in a plasma with negative ions has been observed. For sufficiently large concentration of negative ions, applied rarefactive (negative) voltage pulses break up into solitons, whereas compressive pulses evolve into wave trains, with exactly the opposite behavior as that for a plasma composed only of positive ions. There is a critical value of the negative-ion concentration for which a finite-amplitude pulse propagates without steepening.