表面产生负离子时离子中性碰撞对等离子体鞘层的影响

IF 1.3 4区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Contributions to Plasma Physics Pub Date : 2024-12-11 DOI:10.1002/ctpp.202400088

Sutapa Samanta, Rakesh Moulick, P. J. Bhuyan, B. J. Saikia

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引用次数: 0

摘要

研究了表面产生负离子的电负性等离子体中离子中性碰撞对等离子体鞘层的影响。这种鞘状结构通常在负离子源中发现。已经发现，离子中性碰撞降低了向鞘层的离子速度，从而减少了从表面产生的负离子。空间电荷谱在鞘层边缘附近显示峰值，而在通常情况下，它在壁附近有一个峰值。计算了壁面上离子的损失分数和离子的冲击能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of Ion-Neutral Collisions on the Plasma Sheath in the Presence of Surface-Produced Negative Ions

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Effect of Ion-Neutral Collisions on the Plasma Sheath in the Presence of Surface-Produced Negative Ions

The effect of ion-neutral collisions on the plasma sheath has been investigated for electronegative plasma in the presence of surface-produced negative ions. Such sheath structures are commonly found in the negative ion sources. It has been found that ion-neutral collisions reduce the ion velocity towards the sheath and consequently reduce the negative ion production from the surface. The space charge profile shows peak near the sheath edge in contrast to the common case where it has a peak near the wall. The fractional loss of the ions at the wall along with the ion impact energy is calculated.

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来源期刊

Contributions to Plasma Physics 物理-物理：流体与等离子体

CiteScore

2.90

自引率

12.50%

发文量

110

审稿时长

4-8 weeks

期刊介绍： Aims and Scope of Contributions to Plasma Physics: Basic physics of low-temperature plasmas; Strongly correlated non-ideal plasmas; Dusty Plasmas; Plasma discharges - microplasmas, reactive, and atmospheric pressure plasmas; Plasma diagnostics; Plasma-surface interaction; Plasma technology; Plasma medicine.