{"title":"Switching Autowaves in the Lightning Channel","authors":"D. I. Iudin","doi":"10.1134/S1063780X2560224X","DOIUrl":null,"url":null,"abstract":"<p>Lightning is presented as a multistable system demonstrating the ability to self-regulation by maintaining its own electrical neutrality. A nonlinear parabolic equation is obtained within the description of the lightning channel using telegraph equations with a nonlinear voltage dependence of the rate of change of the linear charge of the plasma core. The analysis of the model shows that the lightning channel is alternately developed in one of the two modes, each of which is characterized by the attenuation of the longitudinal current from one end of the lightning to the other. The transition between the modes is carried out by exciting a fast switching wave. The lightning development within each mode is accompanied by recharging of the leader system sheath and the movement of the point of the zero charge of the sheath (called the lightning reversal point) towards an increase in the longitudinal current. The movement of the reversal point is due to a change in the average potential of the discharge tree during the recharging of the sheath and explains the observed dynamics of lightning transients.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 2","pages":"207 - 218"},"PeriodicalIF":0.9000,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasma Physics Reports","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063780X2560224X","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, FLUIDS & PLASMAS","Score":null,"Total":0}
引用次数: 0
Abstract
Lightning is presented as a multistable system demonstrating the ability to self-regulation by maintaining its own electrical neutrality. A nonlinear parabolic equation is obtained within the description of the lightning channel using telegraph equations with a nonlinear voltage dependence of the rate of change of the linear charge of the plasma core. The analysis of the model shows that the lightning channel is alternately developed in one of the two modes, each of which is characterized by the attenuation of the longitudinal current from one end of the lightning to the other. The transition between the modes is carried out by exciting a fast switching wave. The lightning development within each mode is accompanied by recharging of the leader system sheath and the movement of the point of the zero charge of the sheath (called the lightning reversal point) towards an increase in the longitudinal current. The movement of the reversal point is due to a change in the average potential of the discharge tree during the recharging of the sheath and explains the observed dynamics of lightning transients.
期刊介绍：
Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.
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