摘要
考虑发生在控告的灰尘谷物和中立煤气的粒子(灰尘中立的碰撞) 之间的外部磁场，断热的灰尘费用变化和碰撞的联合效果，在三维的一致尘封的血浆的灰尘声学的独居的波浪被调查经分解。由使用减少的不安方法，管理灰尘声学的独居的波浪的 Korteweg de Vries (KdV ) 方程被获得。现在的分析结果显示出那唯一的 rarefactive 独居的波浪在这个系统存在。沿着 z 方向，灰尘费用变化， collisional 频率，血浆密度，和温度比率罐头的波浪向量的效果显著地影响低频率的波浪模式的特征，这也被发现。而且 collisional 尘封的血浆，有某个批评价值 μ
<SUB > 血浆密度比率 μ
的 c </SUB>μ
【
μ
<SUB > 波浪的宽度与 μ
增加的 c </SUB>, ，不那样，波浪的宽度与 μ
减少。
Taking into account the combined effects of the external magnetic field, adiabatic dust charge fluctuation and collisions occurring between the charged dust grains and neutral gas particles （dust-neutral collisions）, the dust-acoustic solitary waves in three-dimensional uniform dusty plasmas are investigated analytically. By using the reductive perturbation method, the Korteweg-de Vries （KdV） equation governing the dnst-aconstic solitary waves is obtained. The present analytical results show that only rarefactive solitary waves exist in this system. It is also found that the effects of the wave vector along the z-direction, dust charge variation, collisional frequency, the plasma density, and temperature ratio can significantly influence the characteristics of low-frequency wave modes. Moreover, for the collisional dusty plasmas, there is a certain critical value μc of the plasma density ratio μ, if μ 〈 μc, the width of the waves increases with μ, otherwise the width of waves decreases with μ.
