Computation of dust charge and potential on a static spherical dust grain immersed in rf discharges

被引:18
作者
Ikkurthi, V. R. [1 ]
Matyash, K. [2 ]
Melzer, A. [1 ]
Schneider, R. [2 ]
机构
[1] Univ Greifswald, D-17489 Greifswald, Germany
[2] EURATOM, Max Planck Inst Plasmaphys, D-17491 Greifswald, Germany
关键词
discharges (electric); dusty plasmas; plasma collision processes;
D O I
10.1063/1.3041659
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Dust charge and potential on static spherical dust grains located in an argon rf discharge under typical laboratory experiment conditions have been computed using a three-dimensional particle-particle-particle-mesh code. Elastic and inelastic collisions have been included in the current model to obtain realistic rf discharge plasma conditions. Dust charge, potential, and potential distribution around the dust have been computed for various sizes of dust placed at different locations in the rf discharge. The dust charge is found to be smaller than the values from the simple orbit motion limited model due to ion-neutral collisions. Further, the dust potential has been found to be increasing with dust size. Moreover, the shielding length of the dust has been found between electron and ion Debye lengths.
引用
收藏
页数:9
相关论文
共 58 条
[1]  
Al'pert Ya. L., 1965, Space Physics with Artificial Satellites
[2]   On the orbital motion limited theory for a small body at floating potential in a Maxwellian plasma [J].
Allen, JE ;
Annaratone, BM ;
de Angelis, U .
JOURNAL OF PLASMA PHYSICS, 2000, 63 :299-309
[3]   THE COLLECTION OF POSITIVE IONS BY A PROBE IMMERSED IN A PLASMA [J].
ALLEN, JE ;
BOYD, RLF ;
REYNOLDS, P .
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1957, 70 (03) :297-304
[4]   PROBE THEORY - THE ORBITAL MOTION APPROACH [J].
ALLEN, JE .
PHYSICA SCRIPTA, 1992, 45 (05) :497-503
[5]   ION CURRENTS TO CYLINDRICAL LANGMUIR PROBES IN RF PLASMAS [J].
ANNARATONE, BM ;
ALLEN, MW ;
ALLEN, JE .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1992, 25 (03) :417-424
[6]   Confinement of Coulomb balls [J].
Arp, O ;
Block, D ;
Klindworth, M ;
Piel, A .
PHYSICS OF PLASMAS, 2005, 12 (12) :1-9
[7]   THEORY OF ELECTROSTATIC PROBES IN A LOW-DENSITY PLASMA [J].
BERNSTEIN, IB ;
RABINOWITZ, IN .
PHYSICS OF FLUIDS, 1959, 2 (02) :112-121
[8]  
Birdsall C. K., 2018, Plasma Physics via Computer Simulation
[9]  
Bohm D., 1949, Qualitative Description of the Arc Plasma in a Magnetic Field
[10]  
CHEN FF, 1965, J NUCL ENERGY C, V7, P47