The role of dust particles with large gyroradii in the '2/3' fall-down process
The authors consider the Alfven-Arrhenius fall-down process and propose a mechanism whereby the Rosseland electric field (the field needed to maintain quasineutrality) may be responsible for the capture and confinement of large-gyroradius dust particles within a plasma shell stratified along the dir...
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| Veröffentlicht in: | IEEE Trans. Plasma Sci.; (United States) 1989-04, Vol.17 (2), p.228-237 |
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| creator | Azar, M.J. Thompson, W.B. |
| description | The authors consider the Alfven-Arrhenius fall-down process and propose a mechanism whereby the Rosseland electric field (the field needed to maintain quasineutrality) may be responsible for the capture and confinement of large-gyroradius dust particles within a plasma shell stratified along the direction of the magnetic-field lines. For these particles, the effect of the magnetic force is rather weak, and they move with a constant z component of the angular momentum in a one-dimensional equivalent potential (gravitational plus centrifugal). This has a maximum at the equator and a minimum at the '2/3' points, i.e. the points where the field-aligned components of the gravitational and centrifugal forces balance. It is shown that under suitable initial conditions these are points of maximum dust density and minimum plasma density. The plasma-planetisemal transition is therefore expected to take place at the '2/3' points in accordance with the Alfven-Arrhenius mechanism. It is also shown that the fraction of infalling dust particles that can accrete onto the equatorial plane by the Alfven-Arrhenius and Rosseland mechanisms is rather small ( approximately (L/R/sub e/) |
| doi_str_mv | 10.1109/27.24629 |
| format | Article |
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For these particles, the effect of the magnetic force is rather weak, and they move with a constant z component of the angular momentum in a one-dimensional equivalent potential (gravitational plus centrifugal). This has a maximum at the equator and a minimum at the '2/3' points, i.e. the points where the field-aligned components of the gravitational and centrifugal forces balance. It is shown that under suitable initial conditions these are points of maximum dust density and minimum plasma density. The plasma-planetisemal transition is therefore expected to take place at the '2/3' points in accordance with the Alfven-Arrhenius mechanism. It is also shown that the fraction of infalling dust particles that can accrete onto the equatorial plane by the Alfven-Arrhenius and Rosseland mechanisms is rather small ( approximately (L/R/sub e/)<<1), L being the thickness of the plasma shell, and R/sub e/, a characteristic length scale of the field line.< ></description><identifier>ISSN: 0093-3813</identifier><identifier>EISSN: 1939-9375</identifier><identifier>DOI: 10.1109/27.24629</identifier><identifier>CODEN: ITPSBD</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; 700101 - Fusion Energy- Plasma Research- Confinement, Heating, & Production ; 700108 - Fusion Energy- Plasma Research- Wave Phenomena ; 700202 - Fusion Power Plant Technology- Magnet Coils & Fields ; ALFVEN WAVES ; ANGULAR MOMENTUM ; ARRHENIUS EQUATION ; Astronomy ; Clouds ; CONFINEMENT ; COSMIC DUST ; DIMENSIONS ; DUSTS ; Dusty plasma ; Earth, ocean, space ; Electrodynamics ; EQUATIONS ; Exact sciences and technology ; Fundamental aspects of astrophysics ; Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations ; GRAVITATIONAL FIELDS ; GYROFREQUENCY ; HYDROMAGNETIC WAVES ; INTERACTIONS ; Magnetic confinement ; MAGNETIC FIELDS ; Magnetic forces ; Magnetohydrodynamics and plasmas ; Magnetosphere ; PLASMA ; PLASMA CONFINEMENT ; PLASMA DENSITY ; Plasma properties ; Solar system ; THICKNESS</subject><ispartof>IEEE Trans. Plasma Sci.; (United States), 1989-04, Vol.17 (2), p.228-237</ispartof><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c325t-1912069d3216176f74da0c10d82abbe89ba5eef8681d07df220f77b7c8357a9f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/24629$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,881,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/24629$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19387410$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6125730$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Azar, M.J.</creatorcontrib><creatorcontrib>Thompson, W.B.</creatorcontrib><creatorcontrib>Dept. of Physics, Univ. of California, San Diego, La Jolla, CA (US)</creatorcontrib><title>The role of dust particles with large gyroradii in the '2/3' fall-down process</title><title>IEEE Trans. Plasma Sci.; (United States)</title><addtitle>TPS</addtitle><description>The authors consider the Alfven-Arrhenius fall-down process and propose a mechanism whereby the Rosseland electric field (the field needed to maintain quasineutrality) may be responsible for the capture and confinement of large-gyroradius dust particles within a plasma shell stratified along the direction of the magnetic-field lines. For these particles, the effect of the magnetic force is rather weak, and they move with a constant z component of the angular momentum in a one-dimensional equivalent potential (gravitational plus centrifugal). This has a maximum at the equator and a minimum at the '2/3' points, i.e. the points where the field-aligned components of the gravitational and centrifugal forces balance. It is shown that under suitable initial conditions these are points of maximum dust density and minimum plasma density. The plasma-planetisemal transition is therefore expected to take place at the '2/3' points in accordance with the Alfven-Arrhenius mechanism. It is also shown that the fraction of infalling dust particles that can accrete onto the equatorial plane by the Alfven-Arrhenius and Rosseland mechanisms is rather small ( approximately (L/R/sub e/)<<1), L being the thickness of the plasma shell, and R/sub e/, a characteristic length scale of the field line.< ></description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>700101 - Fusion Energy- Plasma Research- Confinement, Heating, & Production</subject><subject>700108 - Fusion Energy- Plasma Research- Wave Phenomena</subject><subject>700202 - Fusion Power Plant Technology- Magnet Coils & Fields</subject><subject>ALFVEN WAVES</subject><subject>ANGULAR MOMENTUM</subject><subject>ARRHENIUS EQUATION</subject><subject>Astronomy</subject><subject>Clouds</subject><subject>CONFINEMENT</subject><subject>COSMIC DUST</subject><subject>DIMENSIONS</subject><subject>DUSTS</subject><subject>Dusty plasma</subject><subject>Earth, ocean, space</subject><subject>Electrodynamics</subject><subject>EQUATIONS</subject><subject>Exact sciences and technology</subject><subject>Fundamental aspects of astrophysics</subject><subject>Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations</subject><subject>GRAVITATIONAL FIELDS</subject><subject>GYROFREQUENCY</subject><subject>HYDROMAGNETIC WAVES</subject><subject>INTERACTIONS</subject><subject>Magnetic confinement</subject><subject>MAGNETIC FIELDS</subject><subject>Magnetic forces</subject><subject>Magnetohydrodynamics and plasmas</subject><subject>Magnetosphere</subject><subject>PLASMA</subject><subject>PLASMA CONFINEMENT</subject><subject>PLASMA DENSITY</subject><subject>Plasma properties</subject><subject>Solar system</subject><subject>THICKNESS</subject><issn>0093-3813</issn><issn>1939-9375</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNqN0EtLAzEUBeAgCtYHuHUXBK2bafNokslSxBcU3eg6pJmbNjJOapIi_ntHp-jWVSD57snlIHRCyYRSoqdMTdhMMr2DRlRzXWmuxC4aEaJ5xWvK99FBzq-E0JkgbIQen1eAU2wBR4-bTS54bVMJroWMP0JZ4damJeDlZ4rJNiHg0OHSj4zZlI-xt21bNfGjw-sUHeR8hPb6uwzH2_MQvdzePF_fV_Onu4frq3nlOBOlopoyInXDGZVUSa9mjSWOkqZmdrGAWi-sAPC1rGlDVOMZI16phXI1F8pqzw_R2ZAbcwkmu1DArVzsOnDFSMqE4qRHFwPql3vfQC7mLWQHbWs7iJtsWC2FUOofUAgqleQ9vBygSzHnBN6sU3iz6dNQYr7rN0yZn_p7er7NtNnZ1ifbuZD_vOa1mtHvv08HFwDg93nI-ALnmYmD</recordid><startdate>19890401</startdate><enddate>19890401</enddate><creator>Azar, M.J.</creator><creator>Thompson, W.B.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7U5</scope><scope>OTOTI</scope></search><sort><creationdate>19890401</creationdate><title>The role of dust particles with large gyroradii in the '2/3' fall-down process</title><author>Azar, M.J. ; Thompson, W.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c325t-1912069d3216176f74da0c10d82abbe89ba5eef8681d07df220f77b7c8357a9f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>700101 - Fusion Energy- Plasma Research- Confinement, Heating, & Production</topic><topic>700108 - Fusion Energy- Plasma Research- Wave Phenomena</topic><topic>700202 - Fusion Power Plant Technology- Magnet Coils & Fields</topic><topic>ALFVEN WAVES</topic><topic>ANGULAR MOMENTUM</topic><topic>ARRHENIUS EQUATION</topic><topic>Astronomy</topic><topic>Clouds</topic><topic>CONFINEMENT</topic><topic>COSMIC DUST</topic><topic>DIMENSIONS</topic><topic>DUSTS</topic><topic>Dusty plasma</topic><topic>Earth, ocean, space</topic><topic>Electrodynamics</topic><topic>EQUATIONS</topic><topic>Exact sciences and technology</topic><topic>Fundamental aspects of astrophysics</topic><topic>Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations</topic><topic>GRAVITATIONAL FIELDS</topic><topic>GYROFREQUENCY</topic><topic>HYDROMAGNETIC WAVES</topic><topic>INTERACTIONS</topic><topic>Magnetic confinement</topic><topic>MAGNETIC FIELDS</topic><topic>Magnetic forces</topic><topic>Magnetohydrodynamics and plasmas</topic><topic>Magnetosphere</topic><topic>PLASMA</topic><topic>PLASMA CONFINEMENT</topic><topic>PLASMA DENSITY</topic><topic>Plasma properties</topic><topic>Solar system</topic><topic>THICKNESS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Azar, M.J.</creatorcontrib><creatorcontrib>Thompson, W.B.</creatorcontrib><creatorcontrib>Dept. of Physics, Univ. of California, San Diego, La Jolla, CA (US)</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>OSTI.GOV</collection><jtitle>IEEE Trans. Plasma Sci.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Azar, M.J.</au><au>Thompson, W.B.</au><aucorp>Dept. of Physics, Univ. of California, San Diego, La Jolla, CA (US)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The role of dust particles with large gyroradii in the '2/3' fall-down process</atitle><jtitle>IEEE Trans. Plasma Sci.; (United States)</jtitle><stitle>TPS</stitle><date>1989-04-01</date><risdate>1989</risdate><volume>17</volume><issue>2</issue><spage>228</spage><epage>237</epage><pages>228-237</pages><issn>0093-3813</issn><eissn>1939-9375</eissn><coden>ITPSBD</coden><abstract>The authors consider the Alfven-Arrhenius fall-down process and propose a mechanism whereby the Rosseland electric field (the field needed to maintain quasineutrality) may be responsible for the capture and confinement of large-gyroradius dust particles within a plasma shell stratified along the direction of the magnetic-field lines. For these particles, the effect of the magnetic force is rather weak, and they move with a constant z component of the angular momentum in a one-dimensional equivalent potential (gravitational plus centrifugal). This has a maximum at the equator and a minimum at the '2/3' points, i.e. the points where the field-aligned components of the gravitational and centrifugal forces balance. It is shown that under suitable initial conditions these are points of maximum dust density and minimum plasma density. The plasma-planetisemal transition is therefore expected to take place at the '2/3' points in accordance with the Alfven-Arrhenius mechanism. It is also shown that the fraction of infalling dust particles that can accrete onto the equatorial plane by the Alfven-Arrhenius and Rosseland mechanisms is rather small ( approximately (L/R/sub e/)<<1), L being the thickness of the plasma shell, and R/sub e/, a characteristic length scale of the field line.< ></abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/27.24629</doi><tpages>10</tpages></addata></record> |
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| ispartof | IEEE Trans. Plasma Sci.; (United States), 1989-04, Vol.17 (2), p.228-237 |
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| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY 700101 - Fusion Energy- Plasma Research- Confinement, Heating, & Production 700108 - Fusion Energy- Plasma Research- Wave Phenomena 700202 - Fusion Power Plant Technology- Magnet Coils & Fields ALFVEN WAVES ANGULAR MOMENTUM ARRHENIUS EQUATION Astronomy Clouds CONFINEMENT COSMIC DUST DIMENSIONS DUSTS Dusty plasma Earth, ocean, space Electrodynamics EQUATIONS Exact sciences and technology Fundamental aspects of astrophysics Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations GRAVITATIONAL FIELDS GYROFREQUENCY HYDROMAGNETIC WAVES INTERACTIONS Magnetic confinement MAGNETIC FIELDS Magnetic forces Magnetohydrodynamics and plasmas Magnetosphere PLASMA PLASMA CONFINEMENT PLASMA DENSITY Plasma properties Solar system THICKNESS |
| title | The role of dust particles with large gyroradii in the '2/3' fall-down process |
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