Plasma Sound Source Basic Research
Plasma Sound Source Basic Research
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发表时间：
1999-07
期刊：
影响因子：
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通讯作者：
R. Rogers;J. Espinosa;D. Fisher;A. Gleeson
中科院分区：
文献类型：
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作者：
R. Rogers;J. Espinosa;D. Fisher;A. Gleeson
摘要：本文研究了等离子体声源的击穿和初始电弧形成现象。对预击穿相进行了实验研究。提出了一个与实验数据定性一致的质子跳跃模型。一篇关于水在电极附近的行为的文献综述表明，水具有规则的固体状结构，允许使用质子跳跃模型来计算电极附近离子传输的细节。讨论了氢离子跃迁到高迁移态的机制和电子击穿模型的缺点。实验数据表明，破坏发生在不强烈依赖压力的结构上。建立了一个弧模型（一维有限差分），显示了气泡上电能的放电和转化为流体机械能的内部动力学，包括辐射和导热传热、粒子输运、电离、填充等离子体的可压缩性和周围水的可压缩性。给出了该模型的一些计算结果。
Abstract : This report investigates the phenomena of breakdown and initial arc formation of a plasma sound source. The prebreakdown phase is examined experimentally. A proton-hopping model is proposed that is qualitatively consistent with the data. A literature review of the behavior of water near electrodes shows water having a regular, solid-like structure, permitting use of proton-hopping models to calculate specifics of ion transport in the electrode vicinity. A mechanism for obtaining the transition of the H+ ions to a high mobility state and shortcomings of electron-based breakdown models are discussed. Experimental data indicate that breakdown occurs from structures not strongly pressure dependent. An arc model (finite difference one-dimensional) is developed showing interior dynamics of the discharge and conversion of electrical energy to hydromechanical energy on the bubble, including radiative and conductive heat transport, particle transport, ionization, compressibility of the filling plasma, and the compressibility of the surrounding water. Some calculated results of this model are presented.