{"title":"凯恩斯分布式等离子体中的凸尾不稳定性","authors":"Huo Rui, Wang Hong","doi":"10.1007/s13538-024-01481-3","DOIUrl":null,"url":null,"abstract":"<p>The growing rate of bump-on-tail instability has been investigated in unmagnetized plasma with Cairns distribution. The growing rate depends significantly on the number density ratio <i>n</i><sub>1</sub>/<i>n</i><sub>2</sub>, temperature ratio <i>T</i><sub>1</sub>/<i>T</i><sub>2</sub>, and the nonthermal parameter <i>α</i>. The influence of these parameters on the maximum growing rate is analyzed numerically by using solar data. The higher <i>α</i> can enhance the growing rate of bump-on-tail instability. The maximum growth rate also will increase with the decrease of number density ratio <i>n</i><sub>1</sub>/<i>n</i><sub>2</sub> and the increase of temperature ratio <i>T</i><sub>1</sub>/<i>T</i><sub>2</sub>. These interesting results will be helpful for understanding some phenomena in space plasma.</p>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Bump-on-Tail Instability in Cairns Distributed Plasma\",\"authors\":\"Huo Rui, Wang Hong\",\"doi\":\"10.1007/s13538-024-01481-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The growing rate of bump-on-tail instability has been investigated in unmagnetized plasma with Cairns distribution. The growing rate depends significantly on the number density ratio <i>n</i><sub>1</sub>/<i>n</i><sub>2</sub>, temperature ratio <i>T</i><sub>1</sub>/<i>T</i><sub>2</sub>, and the nonthermal parameter <i>α</i>. The influence of these parameters on the maximum growing rate is analyzed numerically by using solar data. The higher <i>α</i> can enhance the growing rate of bump-on-tail instability. The maximum growth rate also will increase with the decrease of number density ratio <i>n</i><sub>1</sub>/<i>n</i><sub>2</sub> and the increase of temperature ratio <i>T</i><sub>1</sub>/<i>T</i><sub>2</sub>. These interesting results will be helpful for understanding some phenomena in space plasma.</p>\",\"PeriodicalId\":499,\"journal\":{\"name\":\"Brazilian Journal of Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-05-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Brazilian Journal of Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1007/s13538-024-01481-3\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Brazilian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s13538-024-01481-3","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Bump-on-Tail Instability in Cairns Distributed Plasma
The growing rate of bump-on-tail instability has been investigated in unmagnetized plasma with Cairns distribution. The growing rate depends significantly on the number density ratio n1/n2, temperature ratio T1/T2, and the nonthermal parameter α. The influence of these parameters on the maximum growing rate is analyzed numerically by using solar data. The higher α can enhance the growing rate of bump-on-tail instability. The maximum growth rate also will increase with the decrease of number density ratio n1/n2 and the increase of temperature ratio T1/T2. These interesting results will be helpful for understanding some phenomena in space plasma.
期刊介绍:
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.