Charge screening in a plasma with an external ionization source

Филиппов, А. Н.; Zagorodny, A. G.; Momot, A. I.; Paĺ, A. F.; Starostin, A. N.

doi:10.1134/s1063776107010153

Cited by 47 publications

(20 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The obtained expressions are similar to those derived recently by Filippov et al 54 The only difference is associated with the fact that electron absorption on the grain was retained in Ref. Both these screening lengths depend on the strength of plasma production.…”

Section: ͑11͒supporting

confidence: 85%

Ion drag force on a small grain in highly collisional weakly anisotropic plasma: Effect of plasma production and loss mechanisms

2008

View full text Add to dashboard Cite

The ion drag force acting on a small absorbing grain has been calculated in highly collisional plasma with slowly drifting ions taking into account plasma production and loss processes in the vicinity of the grain. It is shown that the strength of the plasma production and loss mechanisms not only affects the magnitude of the ion drag force, but also determines the direction of the force. The parameter regimes for the "positive" and "negative" ion drag forces have been identified. In addition, the qualitative features of the electric potential distribution around the grain in isotropic conditions ͑in the absence of the ion drift͒ are investigated.

show abstract

Section: ͑11͒supporting

confidence: 85%

Ion drag force on a small grain in highly collisional weakly anisotropic plasma: Effect of plasma production and loss mechanisms

2008

View full text Add to dashboard Cite

show abstract

“…28, provided sink ͑loss͒ of plasma on the test particle is neglected ͓see also Eqs. This result is identical to that given by Eqs.…”

Section: Limiting Casesmentioning

confidence: 99%

“…This causes a nonexponential screening of the electrical potential and, at long enough distances, the potential exhibits an inverse power-law scaling instead of the exponential one. [27][28][29] In this paper we single out the effects of plasma production and loss by neglecting plasma absorption on the test particle surface. [15][16][17][18] In strongly collisional plasmas the potential has a Coulomb-like ͑ϰr −1 ͒ asymptote.…”

Section: Introductionmentioning

confidence: 99%

Shielding of a test charge: Role of plasma production and loss balance

2010

View full text Add to dashboard Cite

High-performance double-filter soft x-ray diagnostic for measurement of electron temperature structure and dynamics Rev. Sci. Instrum. 83, 10E129 (2012) Molybdenum emission from impurity-induced m = 1 snake-modes on the Alcator C-Mod tokamak Rev. Sci. Instrum. 83, 10E517 (2012) Extreme ultraviolet spectroscopy and modeling of Cu on the SSPX Spheromak and laser plasma "Sparky" Rev. Sci. Instrum. 83, 10E101 (2012) Note: Measurement of the runaway electrons in the J-TEXT tokamak Rev. Sci. Instrum. 83, 056108 (2012) Effect of poloidal asymmetries on impurity peaking in tokamaks Shielding of a test charge in a highly collisional plasma is studied taking into account plasma production and loss processes. It is shown that the electric potential distribution is in general different from the conventional Debye-Hückel ͑exponentially screened Coulomb͒ form. The obtained results can be of great importance for a variety of phenomena including basic interactions, transport, phase transitions, and self-organization in conventional electron-ion and complex ͑dusty͒ plasmas.

show abstract

“…Here, T e is the electron temperature and e is the elementary charge. [10][11][12] Recently, it has been shown that plasma ionization-loss processes also play an important role in determining the qualitative nature of the interaction potential between positively charged particles. The point is that the shape of the potential distribution and hence the corresponding interaction potential between charged grains are not fixed but depend considerably on surrounding complex plasma conditions.…”

Section: Introductionmentioning

confidence: 99%

On the possibility of collective attraction in complex plasmas

2010

View full text Add to dashboard Cite

An investigation on the possible collective electric attraction between like-charged dust particles has been performed in an isotropic homogeneous complex ͑dusty͒ plasma in which a balance between plasma creation due to ionization and plasma loss due to the absorption on dust particles has been reached. The analysis is made on the basis of a self-consistent fluid model, which includes plasma ionization, plasma loss on dust particles, dust charge variations, and ion-neutral friction. It is shown that the interaction potential can have an attractive part in the stability regime of the ionization-absorption balance with respect to ion perturbations only under very limited circumstances.

show abstract

Charge screening in a plasma with an external ionization source

Cited by 47 publications

References 13 publications

Ion drag force on a small grain in highly collisional weakly anisotropic plasma: Effect of plasma production and loss mechanisms

Ion drag force on a small grain in highly collisional weakly anisotropic plasma: Effect of plasma production and loss mechanisms

Shielding of a test charge: Role of plasma production and loss balance

On the possibility of collective attraction in complex plasmas

Contact Info

Product

Resources

About