Influence of the transverse dimension on the structure and properties of dc glow discharges
Two-dimensional (2D) simulations of a dc glow discharge with a cold cathode in argon have been performed for various radii of the discharge tube. It is shown that the loss of the charged particles to the walls can significantly affect plasma parameters as well as properties of the cathode sheath. Th...
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| Veröffentlicht in: | Physics of plasmas 2010-10, Vol.17 (10), p.103502-103502-11 |
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| container_end_page | 103502-11 |
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| container_issue | 10 |
| container_start_page | 103502 |
| container_title | Physics of plasmas |
| container_volume | 17 |
| creator | Bogdanov, E. A. Adams, S. F. Demidov, V. I. Kudryavtsev, A. A. Williamson, J. M. |
| description | Two-dimensional (2D) simulations of a dc glow discharge with a cold cathode in argon have been performed for various radii of the discharge tube. It is shown that the loss of the charged particles to the walls can significantly affect plasma parameters as well as properties of the cathode sheath. The longitude dimensions of the negative glow and Faraday dark space depend on the transverse loss of the charge particles and are not consistently predicted with a 1D model. The common assumption that the cathode sheath can be analyzed independently of the plasma also may not be valid. The transverse inhomogeneity of the plasma leads to a change in the current density distribution over the cathode surface. The thickness of the cathode sheath can vary with radial distance from the discharge axis, even for the case of negligible radial loss of the charge particles. The 2D model results provide an analysis of the conditions of applicability of the 1D model. |
| doi_str_mv | 10.1063/1.3486525 |
| format | Article |
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A. ; Adams, S. F. ; Demidov, V. I. ; Kudryavtsev, A. A. ; Williamson, J. M.</creator><creatorcontrib>Bogdanov, E. A. ; Adams, S. F. ; Demidov, V. I. ; Kudryavtsev, A. A. ; Williamson, J. M.</creatorcontrib><description>Two-dimensional (2D) simulations of a dc glow discharge with a cold cathode in argon have been performed for various radii of the discharge tube. It is shown that the loss of the charged particles to the walls can significantly affect plasma parameters as well as properties of the cathode sheath. The longitude dimensions of the negative glow and Faraday dark space depend on the transverse loss of the charge particles and are not consistently predicted with a 1D model. The common assumption that the cathode sheath can be analyzed independently of the plasma also may not be valid. The transverse inhomogeneity of the plasma leads to a change in the current density distribution over the cathode surface. The thickness of the cathode sheath can vary with radial distance from the discharge axis, even for the case of negligible radial loss of the charge particles. 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A.</creatorcontrib><creatorcontrib>Adams, S. F.</creatorcontrib><creatorcontrib>Demidov, V. I.</creatorcontrib><creatorcontrib>Kudryavtsev, A. A.</creatorcontrib><creatorcontrib>Williamson, J. M.</creatorcontrib><title>Influence of the transverse dimension on the structure and properties of dc glow discharges</title><title>Physics of plasmas</title><description>Two-dimensional (2D) simulations of a dc glow discharge with a cold cathode in argon have been performed for various radii of the discharge tube. It is shown that the loss of the charged particles to the walls can significantly affect plasma parameters as well as properties of the cathode sheath. The longitude dimensions of the negative glow and Faraday dark space depend on the transverse loss of the charge particles and are not consistently predicted with a 1D model. The common assumption that the cathode sheath can be analyzed independently of the plasma also may not be valid. The transverse inhomogeneity of the plasma leads to a change in the current density distribution over the cathode surface. The thickness of the cathode sheath can vary with radial distance from the discharge axis, even for the case of negligible radial loss of the charge particles. The 2D model results provide an analysis of the conditions of applicability of the 1D model.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>ARGON</subject><subject>CATHODES</subject><subject>CHARGED-PARTICLE TRANSPORT</subject><subject>DIMENSIONS</subject><subject>ELECTRIC DISCHARGES</subject><subject>ELECTRODES</subject><subject>ELEMENTS</subject><subject>FLUIDS</subject><subject>GASES</subject><subject>GLOW DISCHARGES</subject><subject>NONMETALS</subject><subject>PLASMA</subject><subject>PLASMA SHEATH</subject><subject>PLASMA SIMULATION</subject><subject>RADIATION TRANSPORT</subject><subject>RARE GASES</subject><subject>SIMULATION</subject><subject>THICKNESS</subject><subject>TWO-DIMENSIONAL CALCULATIONS</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhoMoWKsH_0HAk4etSTab3VwEKX4UCl4UBA8hTmbblTZZklTx37tLizdhYAbmed_DQ8glZzPOVHnDZ6VsVCWqIzLhrNFFrWp5PN41K5SSb6fkLKVPxphUVTMh7wvfbnboAWloaV4jzdH69IUxIXXdFn3qgqfDjL-U4w7yLiK13tE-hh5j7jCNWQd0tQnfQyjB2sYVpnNy0tpNwovDnpLXh_uX-VOxfH5czO-WBZRc5KJshXZVqYSWqgampHZaOlaJRoIQ8CGcbrAGXSPKpmKaSSYRXWORA1ZOl1Nyte8NKXcmQZcR1hC8R8hGcCm40PVAXe8piCGliK3pY7e18cdwZkZ3hpuDu4G93bNjmc2Dgf_hP4EmtGaQZAaB5S81E3af</recordid><startdate>20101001</startdate><enddate>20101001</enddate><creator>Bogdanov, E. 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M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of the transverse dimension on the structure and properties of dc glow discharges</atitle><jtitle>Physics of plasmas</jtitle><date>2010-10-01</date><risdate>2010</risdate><volume>17</volume><issue>10</issue><spage>103502</spage><epage>103502-11</epage><pages>103502-103502-11</pages><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>Two-dimensional (2D) simulations of a dc glow discharge with a cold cathode in argon have been performed for various radii of the discharge tube. It is shown that the loss of the charged particles to the walls can significantly affect plasma parameters as well as properties of the cathode sheath. The longitude dimensions of the negative glow and Faraday dark space depend on the transverse loss of the charge particles and are not consistently predicted with a 1D model. The common assumption that the cathode sheath can be analyzed independently of the plasma also may not be valid. The transverse inhomogeneity of the plasma leads to a change in the current density distribution over the cathode surface. The thickness of the cathode sheath can vary with radial distance from the discharge axis, even for the case of negligible radial loss of the charge particles. The 2D model results provide an analysis of the conditions of applicability of the 1D model.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><doi>10.1063/1.3486525</doi></addata></record> |
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| ispartof | Physics of plasmas, 2010-10, Vol.17 (10), p.103502-103502-11 |
| issn | 1070-664X 1089-7674 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21421297 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY ARGON CATHODES CHARGED-PARTICLE TRANSPORT DIMENSIONS ELECTRIC DISCHARGES ELECTRODES ELEMENTS FLUIDS GASES GLOW DISCHARGES NONMETALS PLASMA PLASMA SHEATH PLASMA SIMULATION RADIATION TRANSPORT RARE GASES SIMULATION THICKNESS TWO-DIMENSIONAL CALCULATIONS |
| title | Influence of the transverse dimension on the structure and properties of dc glow discharges |
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