Polarized Debye Sheath in Degenerate Plasmas

被引：5

作者：

Shahmansouri, M. ^{[1
]}

Misra, A. P. ^{[2
]}

机构：

[1] Arak Univ, Fac Sci, Dept Phys, POB 38156-8-8349, Arak, Iran

[2] Visva Bharati Cent Univ, Dept Math, Santini Ketan 731235, W Bengal, India

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2019年 / 71卷 / 11期

关键词：

degenerate plasma; polarization force; dust acoustic waves; DUSTY PLASMAS; FORCE; PARTICULATE; GRAINS;

D O I：

10.1088/0253-6102/71/11/1341

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The force on a charged dust grain in a plasma due to polarization of thermal ions and degenerate electrons around the grain is derived in the limits of weakly relativistic and ultra-relativistic degeneracy of electrons. It is found that in both these cases, the magnitude of the polarization force is enhanced compared to that in classical plasmas. The influence of this force on dust-acoustic (DA) modes is examined and discussed. It is shown that the DA wave frequency in degenerate plasmas is significantly reduced compared to the classical DA mode.

引用

页码：1341 / 1345

页数：5

共 34 条

[1] Nonlinear electrostatic excitations of charged dust in degenerate ultra-dense quantum dusty plasmas [J].

Abdelsalam, U. M. ;

Ali, S. ;

Kourakis, I. .

PHYSICS OF PLASMAS, 2012, 19 (06)

[2] Dust-acoustic solitary waves in a strongly coupled inhomogeneous dusty plasma in the presence of polarization force and effective dust-temperature [J].

Alinejad, H. ;

Mamun, A. A. .

PHYSICS OF PLASMAS, 2011, 18 (07)

[3]

Angelo N. D, 1998, PHYS PLASMAS, V5, P3155

[4]

Asaduzzaman M., 2012, PHYS PLASMAS, V19

[5] Effect of polarization force on the propagation of dust acoustic solitary waves [J].

Bandyopadhyay, P. ;

Konopka, U. ;

Khrapak, S. A. ;

Morfill, G. E. ;

Sen, A. .

NEW JOURNAL OF PHYSICS, 2010, 12

[6] Dust-Acoustic Solitons in a Polarized Dusty Plasma With Nonthermal Ions [J].

Bentabet, Karima ;

Tribeche, Mouloud .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2017, 45 (04) :736-741

[7] Generalized polarization force acting on dust grains in a dusty plasma [J].

Bentabet, Karima ;

Mayout, Saliba ;

Tribeche, Mouloud .

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2017, 466 :492-501

[8] Critical effects in screening of high-Z impurities in plasmas [J].

Bystrenko, O ;

Zagorodny, A .

PHYSICS LETTERS A, 1999, 255 (4-6) :325-330

[9] SHEATH STRUCTURE AROUND PARTICLES IN LOW-PRESSURE DISCHARGES [J].

DAUGHERTY, JE ;

PORTEOUS, RK ;

KILGORE, MD ;

GRAVES, DB .

JOURNAL OF APPLIED PHYSICS, 1992, 72 (09) :3934-3942

[10] Dusty plasmas [J].

Fortov, VE ;

Khrapak, AG ;

Khrapak, SA ;

Molotkov, VI ;

Petrov, OF .

PHYSICS-USPEKHI, 2004, 47 (05) :447-492

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