Properties of small-amplitude electron phase-space holes observed by Polar
We present Polar Plasma Wave Instrument (PWI) measurements of electrostatic solitary waves in the high‐altitude polar magnetosphere. These waves are electrostatic pulses that move parallel (and antiparallel) to the geomagnetic field and are similar to waves detected in many regions of the magnetosph...
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Veröffentlicht in: | Journal of Geophysical Research. A. Space Physics 2005-09, Vol.110 (A9), p.A09212.1-n/a |
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creator | Franz, J. R. Kintner, P. M. Pickett, J. S. Chen, L.-J. |
description | We present Polar Plasma Wave Instrument (PWI) measurements of electrostatic solitary waves in the high‐altitude polar magnetosphere. These waves are electrostatic pulses that move parallel (and antiparallel) to the geomagnetic field and are similar to waves detected in many regions of the magnetosphere by other spacecraft. The PWI instantaneous dynamic range was 72 dB with an added 30 dB obtained by changing gain states. This large dynamic range enables the study of amplitude‐size relations up to a maximum electric field of 44 mV/m in the lowest gain state as well as enabling the investigation of small‐amplitude waves ( |
doi_str_mv | 10.1029/2005JA011095 |
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R. ; Kintner, P. M. ; Pickett, J. S. ; Chen, L.-J.</creator><creatorcontrib>Franz, J. R. ; Kintner, P. M. ; Pickett, J. S. ; Chen, L.-J.</creatorcontrib><description>We present Polar Plasma Wave Instrument (PWI) measurements of electrostatic solitary waves in the high‐altitude polar magnetosphere. These waves are electrostatic pulses that move parallel (and antiparallel) to the geomagnetic field and are similar to waves detected in many regions of the magnetosphere by other spacecraft. The PWI instantaneous dynamic range was 72 dB with an added 30 dB obtained by changing gain states. This large dynamic range enables the study of amplitude‐size relations up to a maximum electric field of 44 mV/m in the lowest gain state as well as enabling the investigation of small‐amplitude waves (<0.1 mV/m). The Polar PWI data indicate that these small‐amplitude solitary waves have typical scale sizes the order of the Debye length, velocities the order of the electron thermal speed, and electrostatic potentials that are small compared with the electron thermal energy per charge (ϕ ≪ kBTe/e). Statistical distributions of the wave properties are presented, and the properties are compared with theoretical predictions of electron phase‐space holes and electron‐acoustic solitons. BGK‐type analysis of electron holes predicts a relationship between the minimum allowed scale size and the amplitude and velocity. The observed solitary waves are consistent with these predictions.</description><identifier>ISSN: 0148-0227</identifier><identifier>ISSN: 2169-9380</identifier><identifier>EISSN: 2156-2202</identifier><identifier>EISSN: 2169-9402</identifier><identifier>DOI: 10.1029/2005JA011095</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>BJK mode ; Dynamic range ; Earth sciences ; Earth, ocean, space ; electron phase-space holes ; Electrostatics ; Exact sciences and technology ; Gain ; Noise levels ; nonlinear waves ; plasma waves ; Solitary waves ; Solitons ; Spacecraft ; Statistical distributions</subject><ispartof>Journal of Geophysical Research. A. 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R.</creatorcontrib><creatorcontrib>Kintner, P. M.</creatorcontrib><creatorcontrib>Pickett, J. S.</creatorcontrib><creatorcontrib>Chen, L.-J.</creatorcontrib><title>Properties of small-amplitude electron phase-space holes observed by Polar</title><title>Journal of Geophysical Research. A. Space Physics</title><addtitle>J. Geophys. Res</addtitle><description>We present Polar Plasma Wave Instrument (PWI) measurements of electrostatic solitary waves in the high‐altitude polar magnetosphere. These waves are electrostatic pulses that move parallel (and antiparallel) to the geomagnetic field and are similar to waves detected in many regions of the magnetosphere by other spacecraft. The PWI instantaneous dynamic range was 72 dB with an added 30 dB obtained by changing gain states. This large dynamic range enables the study of amplitude‐size relations up to a maximum electric field of 44 mV/m in the lowest gain state as well as enabling the investigation of small‐amplitude waves (<0.1 mV/m). The Polar PWI data indicate that these small‐amplitude solitary waves have typical scale sizes the order of the Debye length, velocities the order of the electron thermal speed, and electrostatic potentials that are small compared with the electron thermal energy per charge (ϕ ≪ kBTe/e). Statistical distributions of the wave properties are presented, and the properties are compared with theoretical predictions of electron phase‐space holes and electron‐acoustic solitons. BGK‐type analysis of electron holes predicts a relationship between the minimum allowed scale size and the amplitude and velocity. The observed solitary waves are consistent with these predictions.</description><subject>BJK mode</subject><subject>Dynamic range</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>electron phase-space holes</subject><subject>Electrostatics</subject><subject>Exact sciences and technology</subject><subject>Gain</subject><subject>Noise levels</subject><subject>nonlinear waves</subject><subject>plasma waves</subject><subject>Solitary waves</subject><subject>Solitons</subject><subject>Spacecraft</subject><subject>Statistical distributions</subject><issn>0148-0227</issn><issn>2169-9380</issn><issn>2156-2202</issn><issn>2169-9402</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqF0U1vEzEQBmALgURUeuMH7AXEgYXxt32MKgiEikaID4mLNevMqgtOdrE30Px7NkpFOTW--ODnfa3RMPaUwysOwr8WAHo5B87B6wdsJrg2tRAgHrIZcOVqEMI-Zuel_IDpKG0U8BlbrnI_UB47KlXfVmWDKdW4GVI37tZUUaI45n5bDddYqC4DRqqu-3TQTaH8m9ZVs69WfcL8hD1qMRU6v73P2Je3bz5fvKsvrxbvL-aXddScq5qkV6rR3CkpG9QeQUhA672WZKRYR6ON5gpQr_X07rRtgNsWG47E0UV5xp4fe4fc_9pRGcOmK5FSwi31uxKEBzDOmdPQgZv-Vicht8o65f0EX5yAEsBa5Q705ZHG3JeSqQ1D7jaY94FDOCws_L-wiT-7bcYSMbUZt7Erdxkr1DSVnJw8uj9dov29nWG5-DTn1svDgPUx1ZWRbv6lMP8Mxkqrw7ePiwAfvn4XZuWDl38BNmewHQ</recordid><startdate>200509</startdate><enddate>200509</enddate><creator>Franz, J. R.</creator><creator>Kintner, P. M.</creator><creator>Pickett, J. S.</creator><creator>Chen, L.-J.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope><scope>7U5</scope></search><sort><creationdate>200509</creationdate><title>Properties of small-amplitude electron phase-space holes observed by Polar</title><author>Franz, J. R. ; Kintner, P. M. ; Pickett, J. S. ; Chen, L.-J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5114-e3944b518433ba59a0230a79953e632dc6565140a5d5ba5857b017fab1ae1a8c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>BJK mode</topic><topic>Dynamic range</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>electron phase-space holes</topic><topic>Electrostatics</topic><topic>Exact sciences and technology</topic><topic>Gain</topic><topic>Noise levels</topic><topic>nonlinear waves</topic><topic>plasma waves</topic><topic>Solitary waves</topic><topic>Solitons</topic><topic>Spacecraft</topic><topic>Statistical distributions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Franz, J. R.</creatorcontrib><creatorcontrib>Kintner, P. M.</creatorcontrib><creatorcontrib>Pickett, J. S.</creatorcontrib><creatorcontrib>Chen, L.-J.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><jtitle>Journal of Geophysical Research. A. Space Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Franz, J. R.</au><au>Kintner, P. M.</au><au>Pickett, J. S.</au><au>Chen, L.-J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Properties of small-amplitude electron phase-space holes observed by Polar</atitle><jtitle>Journal of Geophysical Research. A. Space Physics</jtitle><addtitle>J. Geophys. Res</addtitle><date>2005-09</date><risdate>2005</risdate><volume>110</volume><issue>A9</issue><spage>A09212.1</spage><epage>n/a</epage><pages>A09212.1-n/a</pages><issn>0148-0227</issn><issn>2169-9380</issn><eissn>2156-2202</eissn><eissn>2169-9402</eissn><abstract>We present Polar Plasma Wave Instrument (PWI) measurements of electrostatic solitary waves in the high‐altitude polar magnetosphere. These waves are electrostatic pulses that move parallel (and antiparallel) to the geomagnetic field and are similar to waves detected in many regions of the magnetosphere by other spacecraft. The PWI instantaneous dynamic range was 72 dB with an added 30 dB obtained by changing gain states. This large dynamic range enables the study of amplitude‐size relations up to a maximum electric field of 44 mV/m in the lowest gain state as well as enabling the investigation of small‐amplitude waves (<0.1 mV/m). The Polar PWI data indicate that these small‐amplitude solitary waves have typical scale sizes the order of the Debye length, velocities the order of the electron thermal speed, and electrostatic potentials that are small compared with the electron thermal energy per charge (ϕ ≪ kBTe/e). Statistical distributions of the wave properties are presented, and the properties are compared with theoretical predictions of electron phase‐space holes and electron‐acoustic solitons. BGK‐type analysis of electron holes predicts a relationship between the minimum allowed scale size and the amplitude and velocity. The observed solitary waves are consistent with these predictions.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2005JA011095</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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subjects | BJK mode Dynamic range Earth sciences Earth, ocean, space electron phase-space holes Electrostatics Exact sciences and technology Gain Noise levels nonlinear waves plasma waves Solitary waves Solitons Spacecraft Statistical distributions |
title | Properties of small-amplitude electron phase-space holes observed by Polar |
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