直流辉光放电尘埃等离子体中的自激振荡观测

IF 2.3 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physics Letters A Pub Date : 2024-10-29 DOI:10.1016/j.physleta.2024.130013

Nidhi Patel, G. Prasad

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引用次数: 0

摘要

我们对带有多分散氧化铝尘埃粒子的平面阴极等离子体中的放电电流振荡进行了详细的实验研究。我们的实验测量结果表明，尘埃粒子的表面密度与阴极斑点在决定自激振荡状态或稳定尘埃云状态时起着重要作用。在尘埃粒子密度低于临界极限时进行的实验显示了自激振荡。在超过临界极限的情况下，观察到尘埃云悬浮在鞘区。

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Observation of self-excited oscillations in DC glow discharge dusty plasma

We present a detailed experimental study of discharge current oscillations in a planar cathode plasma with poly dispersed alumina dust particles. Our experimental measurements suggest that surface density of dust particles play an important role together with cathode spots, in deciding self excited oscillating regime or stable dust cloud regime. Experiments conducted with dust particles density below the critical limit shows self excited oscillations. Operating above the critical limit, a dust cloud levitated in the sheath region was observed.

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来源期刊

Physics Letters A 物理-物理：综合

CiteScore

5.10

自引率

3.80%

发文量

493

审稿时长

30 days

期刊介绍： Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.