Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution
The effect of dust particle charge fluctuation on the electrical potential in the plasma sheath is determined by solvation of Poisson' equation with the help OLM theory and a Tsallis distribution for current carried by electrons, a cold ion fluid and negatively charged immobile dust grains. It...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Damghan university
2021-07-01
|
| Series: | Iranian Journal of Astronomy and Astrophysics |
| Subjects: | |
| Online Access: | https://ijaa.du.ac.ir/article_270_c9eb37d14443c521d37e68c898ed8aa2.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841545128984969216 |
|---|---|
| author | Fatemeh Kashkooei Jahromi Iman Motie Ali Bakhshayeshi Taghi Mirzaye Babak Haghighi |
| author_facet | Fatemeh Kashkooei Jahromi Iman Motie Ali Bakhshayeshi Taghi Mirzaye Babak Haghighi |
| author_sort | Fatemeh Kashkooei Jahromi |
| collection | DOAJ |
| description | The effect of dust particle charge fluctuation on the electrical potential in the plasma sheath is determined by solvation of Poisson' equation with the help OLM theory and a Tsallis distribution for current carried by electrons, a cold ion fluid and negatively charged immobile dust grains. It is indicated that the nature of electrical potential in plasma sheath dependent to the Sagdeev potential and the properties of electrostatic sheath strongly affected by fluctuations of dust grain charge that modified the Bohm criterion condition. For the first time, by solving the Sagdeev potential, a function is obtained which shows that when this function becomes negative, the ions accelerate into the region of the sheath and form an electrostatic sheath. This nonlinear function is heavily dependent on nonextensive degree of electron, the ion density ratio to electron and kind of plasma gases. It is showed that the farther we go from the Maxwell equilibrium distribution function, the ions need a higher initial velocity to be able to separate from the main body of the plasma and move towards the plasma sheath and the wall. Finally, the results are indicated that considering the dust particle charge fluctuations and the electron nonextensivity degree play an important role on electrostatic sheath formation and modify Bohm criterion. |
| format | Article |
| id | doaj-art-798bd633f59a4d22b95f41f9a5b5aef9 |
| institution | Kabale University |
| issn | 2322-4924 2383-403X |
| language | English |
| publishDate | 2021-07-01 |
| publisher | Damghan university |
| record_format | Article |
| series | Iranian Journal of Astronomy and Astrophysics |
| spelling | doaj-art-798bd633f59a4d22b95f41f9a5b5aef92025-01-12T10:10:12ZengDamghan universityIranian Journal of Astronomy and Astrophysics2322-49242383-403X2021-07-018213514610.22128/ijaa.2021.541.1118270Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron DistributionFatemeh Kashkooei Jahromi0Iman Motie1Ali Bakhshayeshi2Taghi Mirzaye3Babak Haghighi4Department of Physics, Mashhad Branch, Islamic Azad University, Mashhad, IranDepartment of Physics, Mashhad Branch, Islamic Azad University, Mashhad, IranDepartment of Physics, Mashhad Branch, Islamic Azad University, Mashhad, IranDepartment of Physics, Mashhad Branch, Islamic Azad University, Mashhad, IranDepartment of Physics, Mashhad Branch, Islamic Azad University, Mashhad, IranThe effect of dust particle charge fluctuation on the electrical potential in the plasma sheath is determined by solvation of Poisson' equation with the help OLM theory and a Tsallis distribution for current carried by electrons, a cold ion fluid and negatively charged immobile dust grains. It is indicated that the nature of electrical potential in plasma sheath dependent to the Sagdeev potential and the properties of electrostatic sheath strongly affected by fluctuations of dust grain charge that modified the Bohm criterion condition. For the first time, by solving the Sagdeev potential, a function is obtained which shows that when this function becomes negative, the ions accelerate into the region of the sheath and form an electrostatic sheath. This nonlinear function is heavily dependent on nonextensive degree of electron, the ion density ratio to electron and kind of plasma gases. It is showed that the farther we go from the Maxwell equilibrium distribution function, the ions need a higher initial velocity to be able to separate from the main body of the plasma and move towards the plasma sheath and the wall. Finally, the results are indicated that considering the dust particle charge fluctuations and the electron nonextensivity degree play an important role on electrostatic sheath formation and modify Bohm criterion.https://ijaa.du.ac.ir/article_270_c9eb37d14443c521d37e68c898ed8aa2.pdffluctuation of chargetsallis distributionnonextensivitybohm criterionelectrostatic sheathdusty plasma |
| spellingShingle | Fatemeh Kashkooei Jahromi Iman Motie Ali Bakhshayeshi Taghi Mirzaye Babak Haghighi Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution Iranian Journal of Astronomy and Astrophysics fluctuation of charge tsallis distribution nonextensivity bohm criterion electrostatic sheath dusty plasma |
| title | Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution |
| title_full | Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution |
| title_fullStr | Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution |
| title_full_unstemmed | Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution |
| title_short | Effect of Fluctuation of Dust Grain Charge on Electrostatic Sheath Formation in Dusty Plasma with Tsallis Electron Distribution |
| title_sort | effect of fluctuation of dust grain charge on electrostatic sheath formation in dusty plasma with tsallis electron distribution |
| topic | fluctuation of charge tsallis distribution nonextensivity bohm criterion electrostatic sheath dusty plasma |
| url | https://ijaa.du.ac.ir/article_270_c9eb37d14443c521d37e68c898ed8aa2.pdf |
| work_keys_str_mv | AT fatemehkashkooeijahromi effectoffluctuationofdustgrainchargeonelectrostaticsheathformationindustyplasmawithtsalliselectrondistribution AT imanmotie effectoffluctuationofdustgrainchargeonelectrostaticsheathformationindustyplasmawithtsalliselectrondistribution AT alibakhshayeshi effectoffluctuationofdustgrainchargeonelectrostaticsheathformationindustyplasmawithtsalliselectrondistribution AT taghimirzaye effectoffluctuationofdustgrainchargeonelectrostaticsheathformationindustyplasmawithtsalliselectrondistribution AT babakhaghighi effectoffluctuationofdustgrainchargeonelectrostaticsheathformationindustyplasmawithtsalliselectrondistribution |