A self-consistent hybrid model of kinetic striations in low-current argon discharges

نویسندگان

چکیده

Abstract A self-consistent hybrid model of standing and moving striations was developed for low-current DC discharges in noble gases. We introduced the concept surface diffusion phase space ( r , u ) (where denotes electron kinetic energy) described by a tensor nonlocal Fokker–Planck equation electrons collisional plasma. Electrons diffuse along surfaces constant total energy ? = ? e? between jumps inelastic collisions with atoms. Numerical solutions 1d1u were obtained two methods coupled to ion transport Poisson solver. studied dynamics striation formation Townsend glow argon gas at low discharge currents using two-level excitation-ionization ‘full-chemistry’ model, which includes stepwise Penning ionization. Standing appeared currents, exceeding critical value. These waves originate anode propagate towards cathode. have seen types full-chemistry models, resemble s p previously observed experiments. Simulations indicate that processes region could control positive column The helps clarify nature gases pressures.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A self-consistent kinetic model for droplet heating and evaporation

A new kinetic model for heating and evaporation of Diesel fuel droplets is suggested. The model is based on the introduction of the kinetic region in the immediate vicinity of the heated and evaporating droplets, where the dynamics of molecules are described in terms of the Boltzmann equations for vapour components and air, and the hydrodynamic region. The effects of finite thermal conductivity...

متن کامل

Modeling Dusty Plasma Discharges of Noble Gases Using a Self-Consistent Fluid Model

Complex plasmas, which consist of electrons, ions and charged micro-particles, are an interesting and largely unexplored state of matter. One of the most intriguing phenomena in complex plasmas is the formation of dust-free voids in micro-gravity experiments. In order to achieve an isotropic dusty plasma system, this void must be closed. Using a self-consistent fluid model to simulate plasma be...

متن کامل

a tripartite model of efl teachers attributions, burnout, and ‎self-regulation: towards the prospects of effective teaching

همطالعه حاضر به ارائه مدلی برای آموزش موثر زبان انگلیسی ‏می پردازد. مدل حاضر از سه عامل تاثیر گذار در کارایی ‏تدریس معلمان زبان انگلیسی بهره می برد. این سه عامل شامل ‏سبکهای اسنادی، خود تنطیمی و فرسودگی شغلی معلمان ایرانی ‏زبان انگلیسی می باشد. رساله مورد نظر درچهار فاز طراحی ‏شده است: فاز اول شامل طراحی و رواسازی پرسشنامه سبکهای ‏اسنادی معلمان زبان انگلیسی و فاز دوم شامل استفاده از ‏این پرسشنا...

Self-consistent system of equations for a kinetic description of the low-pressure discharges accounting for the nonlocal and collisionless electron dynamics.

In low-pressure discharges, where the electron mean free path is larger or comparable with the discharge length, the electron dynamics is essentially nonlocal. Moreover, the electron energy distribution function (EEDF) deviates considerably from a Maxwellian. Therefore, an accurate kinetic description of the low-pressure discharges requires knowledge of the nonlocal conductivity operator and ca...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Plasma Sources Science and Technology

سال: 2022

ISSN: ['1361-6595', '0963-0252']

DOI: https://doi.org/10.1088/1361-6595/ac4b68