{"title":"电子尾分布的碰撞弛豫","authors":"M. Yamagiwa, M. Okamoto","doi":"10.1143/JPSJ.54.3763","DOIUrl":null,"url":null,"abstract":"Relaxation due to the Coulomb collisions of the electron velocity distribution function with a high energy tail is investigated in detail. In the course of the relaxation, a `saddle' point can be created in velocity space owing to v -3 dependence of the deflection rate and a positive slope or a `dip' appears in the tail direction. The time evolution of the electron tail is studied analytically. A comparison is made with numerical results by using a Fokker-Planck code. Also discussed is the kinetic instability concerned with the positive slope during the relaxation.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"24 1","pages":"1-23"},"PeriodicalIF":0.0000,"publicationDate":"1985-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":"{\"title\":\"Collisional Relaxation of Electron Tail Distribution\",\"authors\":\"M. Yamagiwa, M. Okamoto\",\"doi\":\"10.1143/JPSJ.54.3763\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Relaxation due to the Coulomb collisions of the electron velocity distribution function with a high energy tail is investigated in detail. In the course of the relaxation, a `saddle' point can be created in velocity space owing to v -3 dependence of the deflection rate and a positive slope or a `dip' appears in the tail direction. The time evolution of the electron tail is studied analytically. A comparison is made with numerical results by using a Fokker-Planck code. Also discussed is the kinetic instability concerned with the positive slope during the relaxation.\",\"PeriodicalId\":22276,\"journal\":{\"name\":\"The annual research report\",\"volume\":\"24 1\",\"pages\":\"1-23\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1985-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The annual research report\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1143/JPSJ.54.3763\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The annual research report","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1143/JPSJ.54.3763","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Collisional Relaxation of Electron Tail Distribution
Relaxation due to the Coulomb collisions of the electron velocity distribution function with a high energy tail is investigated in detail. In the course of the relaxation, a `saddle' point can be created in velocity space owing to v -3 dependence of the deflection rate and a positive slope or a `dip' appears in the tail direction. The time evolution of the electron tail is studied analytically. A comparison is made with numerical results by using a Fokker-Planck code. Also discussed is the kinetic instability concerned with the positive slope during the relaxation.