| ƽ��ֱ����ƫѹ��ײ�ʲ�Child-Langmuir���ɵ���Ϲ�ʽ |
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| 引用本文： | 钱丹娜,李雪春,王友年.ƽ��ֱ����ƫѹ��ײ�ʲ�Child-Langmuir���ɵ���Ϲ�ʽ[J].核聚变与等离子体物理,2006,26(1):71-74. |
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| 作者姓名： | 钱丹娜 李雪春 王友年 |
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| 作者单位： | (???????????????,??????????????????????,????116024) |
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| 摘 要： | 采用流体动力学模型研究了离子与中性粒子的电荷交换碰撞效应对直流偏压鞘层厚度的影响。对于平板鞘层,结果表明随着碰撞参数的增大,鞘层厚度明显地变小。根据数值结果,给出了碰撞情况下的Child-Lang-muir定律的拟合式。研究了柱形和球形靶的靶半径对鞘层厚度的影响。
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| 关 键 词： | 鞘层 Child-Langmuir定律 碰撞效应 |
| 文章编号： | 0254-6086（2006）01-0071-04 |
| 收稿时间： | 2005-08-08 |
| 修稿时间： | 2005-08-082005-11-08 |
Fitted expression of Child-Langmuir law for planar direct-current biased negative voltage collision sheaths |
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| QIAN Dan-na,LI Xue-chun,WANG You-nian.Fitted expression of Child-Langmuir law for planar direct-current biased negative voltage collision sheaths[J].Nuclear Fusion and Plasma Physics,2006,26(1):71-74. |
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| Authors: | QIAN Dan-na LI Xue-chun WANG You-nian |
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| Institution: | (State Key Lab of Materials Modification by Beams , Department of Physics , Dalian University of Technology , Dalian 116024) |
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| Abstract: | With the hydrodynamic model,effects of the charge-exchange collisions between ions and neutrals on the direct-current biased voltage sheaths is studied.For planar target,the sheath thickness becomes smaller as collision parameter increases.A fitted expression of the Child-Langmiur law for the planar sheath is presented based on the numerical results.In addition,the influence of the target radius on the sheath thickness is also studied for the cylindrical and spherical targets,respectively. |
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| Keywords: | Sheath Child-Langmuir law Collision effect |
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