CAJ | 학술논문

在一维平板鞘层中应用流体模型研究了尘埃等离子体鞘层中碰撞对尘埃颗粒密度和带电量的影响。研究所涉及的碰撞主要有电离碰撞，电子、离子分别与中性粒子的碰撞，以及电子、离子分别与尘埃颗粒的碰撞。通过采用四阶龙格库塔法，得到了数值解。结果表明，随着电离碰撞或者电子、离子分别与中性粒子碰撞的频率增加，都将导致鞘层中尘埃颗粒的数密度增大，数密度的极值位置向鞘边位置靠近，尘埃颗粒带电量增多。电子、离子与尘埃颗粒的碰撞，使得尘埃带电量减小。此外，从研究的结果来看，由离子产生的碰撞要比电子产生的碰撞对尘埃颗粒的影响明显得多。
재일유평판초층중응용류체모형연구료진애등리자체초층중팽당대진애과립밀도화대전량적영향。연구소섭급적팽당주요유전리팽당，전자、리자분별여중성입자적팽당，이급전자、리자분별여진애과립적팽당。통과채용사계룡격고탑법，득도료수치해。결과표명，수착전리팽당혹자전자、리자분별여중성입자팽당적빈솔증가，도장도치초층중진애과립적수밀도증대，수밀도적겁치위치향초변위치고근，진애과립대전량증다。전자、리자여진애과립적팽당，사득진애대전량감소。차외，종연구적결과래간，유리자산생적팽당요비전자산생적팽당대진애과립적영향명현득다。
The fluid dynamics model was used to study the influence of the existence of the collisions on the dust particles in a dusty plasma sheath. The main collisions in this study consist of the ionization collision, the collision between electron and neutral particle, the collision between ion and neutral particle, the collision between electron and dust particle, the collision between ion and dust particle. Numerical calculation results are obtained by the fourth-order-Rung-Kutta method. It is shown that both the dust particles’ density and corresponding electricity quantity increase as the following collisions’ frequency enhances, such as ionization collision, the collision between electron and neutral particle, the collision between ion and neutral particle. The charge reduces due to the collisions concluding electron-dust particle and ion-dust particle. In addition, the effect produced by ions’ collision is much more obviously compared with electrons’ collision.