典型文献
On the electron sheath theory and its applications in plasma-surface interactions
文献摘要：
In this work,an improved understanding of electron sheath theory is provided using both fluid and kinetic approaches while elaborating on their implications for plasma-surface interactions.A fluid model is proposed considering the electron presheath structure,avoiding the singularity in electron sheath Child-Langmuir law which overestimates the sheath potential.Subsequently,a kinetic model of electron sheath is established,showing considerably different sheath profiles in respect to the fluid model due to non-Maxwellian electron velocity distribution function and finite ion temperature.The kinetic model is then further generalized and involves a more realistic truncated ion velocity distribution function.It is demonstrated that such a distribution function yields a super-thermal electron sheath whose entering velocity at the sheath edge is greater than the Bohm criterion prediction.Furthermore,an attempt is made to describe the electron presheath-sheath coupling within the kinetic framework,showing a necessary compromise between a realistic sheath entrance and the inclusion of kinetic effects.Finally,the secondary electron emissions induced by sheath-accelerated plasma electrons in an electron sheath are analysed and the influence of backscattering is discussed.
文献关键词：
中图分类号：
作者姓名：
Guangyu SUN;Shu ZHANG;Anbang SUN;Guanjun ZHANG
作者机构：
State Key Laboratory of Electrical Insulation and Power Equipment,School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,People's Republic of China;Ecole Polytechnique Fédérale de Lausanne,Swiss Plasma Center,CH-1015 Lausanne.Switzerland;Laboratoire de Physique des Plasmas,Ecole rolytectim-que,91120 Palaiseau,France
文献出处：
引用格式：
[1]Guangyu SUN;Shu ZHANG;Anbang SUN;Guanjun ZHANG-.On the electron sheath theory and its applications in plasma-surface interactions)[J].等离子体科学和技术（英文版）,2022(09):52-67
A类：
presheath
B类：
On,theory,its,applications,plasma,surface,interactions,In,this,improved,understanding,provided,using,both,fluid,kinetic,approaches,while,elaborating,their,implications,model,proposed,considering,structure,avoiding,singularity,Child,Langmuir,law,which,overestimates,potential,Subsequently,established,showing,considerably,different,profiles,respect,due,Maxwellian,velocity,distribution,function,finite,temperature,then,further,generalized,involves,realistic,truncated,It,demonstrated,that,such,yields,super,thermal,whose,entering,edge,greater,than,Bohm,criterion,prediction,Furthermore,attempt,made,describe,coupling,within,framework,necessary,compromise,between,entrance,inclusion,effects,Finally,secondary,emissions,induced,by,accelerated,electrons,are,analysed,influence,backscattering,discussed
AB值：
0.547046
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