Superbanana transport in the collisional heating of a plasma column forced across a squeeze potential

When weakly collisional plasmas have locally trapped particle populations, perturbations to the plasma equilibrium (such as waves or static field-errors) can induce phase-space discontinuities in the particle distribution function that strongly enhance entropy production, plasma loss, and wave dampi...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2017-11, Vol.24 (11)
Main Author: Dubin, Daniel H. E.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by
cites
container_end_page
container_issue 11
container_start_page
container_title Physics of plasmas
container_volume 24
creator Dubin, Daniel H. E.
description When weakly collisional plasmas have locally trapped particle populations, perturbations to the plasma equilibrium (such as waves or static field-errors) can induce phase-space discontinuities in the particle distribution function that strongly enhance entropy production, plasma loss, and wave damping via superbanana transport. Here, this paper presents a simple version of this superbanana transport process, wherein a plasma is heated as it is slowly forced back and forth across a squeeze potential (at a frequency ω that is small compared with the particle bounce frequency). The squeeze potential traps low-energy particles on either side of the squeeze, but particles with higher energy can pass through it. Trapped and passing particles have different responses to the forcing, causing a collisionless discontinuity in the distribution function at the separatrix between the trapped and passing particles. Expressions for both the adiabatic and non-adiabatic distribution functions are presented, and the heating rate caused by collisional broadening of the separatrix discontinuity is derived. The heating rate is proportional to √νω , provided that ν
doi_str_mv 10.1063/1.5001062
format article
fullrecord <record><control><sourceid>osti</sourceid><recordid>TN_cdi_osti_scitechconnect_1514862</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1514862</sourcerecordid><originalsourceid>FETCH-osti_scitechconnect_15148623</originalsourceid><addsrcrecordid>eNqNikFOwzAQRa2KSi0tC24wYp923CZOWCMQe1iwqwYzIUbuOHicDacnlTgA-ov3pPeNubW4s-iOe7trEGc7LMzaYndfta6try7eYuVc_bYy16pfiFi7plsbfplGzu8k86BkEh1TLhAEysDgU4xBQxKKMDCVIJ-QeiAYI-mZLn06C_Qpe_4A8jmpzlW_J-YfhjEVlhIobs2yp6h888eNuXt6fH14rpKWcFIfCvvBJxH25WQbW3fucPzX6ReriUwc</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Superbanana transport in the collisional heating of a plasma column forced across a squeeze potential</title><source>American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)</source><source>American Institute of Physics</source><creator>Dubin, Daniel H. E.</creator><creatorcontrib>Dubin, Daniel H. E. ; Univ. of California, San Diego, CA (United States)</creatorcontrib><description>When weakly collisional plasmas have locally trapped particle populations, perturbations to the plasma equilibrium (such as waves or static field-errors) can induce phase-space discontinuities in the particle distribution function that strongly enhance entropy production, plasma loss, and wave damping via superbanana transport. Here, this paper presents a simple version of this superbanana transport process, wherein a plasma is heated as it is slowly forced back and forth across a squeeze potential (at a frequency ω that is small compared with the particle bounce frequency). The squeeze potential traps low-energy particles on either side of the squeeze, but particles with higher energy can pass through it. Trapped and passing particles have different responses to the forcing, causing a collisionless discontinuity in the distribution function at the separatrix between the trapped and passing particles. Expressions for both the adiabatic and non-adiabatic distribution functions are presented, and the heating rate caused by collisional broadening of the separatrix discontinuity is derived. The heating rate is proportional to √νω , provided that ν&lt;&lt;ω, where ν is the collision rate (i.e., the √ν regime of superbanana theory).</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.5001062</identifier><language>eng</language><publisher>United States: American Institute of Physics (AIP)</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><ispartof>Physics of plasmas, 2017-11, Vol.24 (11)</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,778,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1514862$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Dubin, Daniel H. E.</creatorcontrib><creatorcontrib>Univ. of California, San Diego, CA (United States)</creatorcontrib><title>Superbanana transport in the collisional heating of a plasma column forced across a squeeze potential</title><title>Physics of plasmas</title><description>When weakly collisional plasmas have locally trapped particle populations, perturbations to the plasma equilibrium (such as waves or static field-errors) can induce phase-space discontinuities in the particle distribution function that strongly enhance entropy production, plasma loss, and wave damping via superbanana transport. Here, this paper presents a simple version of this superbanana transport process, wherein a plasma is heated as it is slowly forced back and forth across a squeeze potential (at a frequency ω that is small compared with the particle bounce frequency). The squeeze potential traps low-energy particles on either side of the squeeze, but particles with higher energy can pass through it. Trapped and passing particles have different responses to the forcing, causing a collisionless discontinuity in the distribution function at the separatrix between the trapped and passing particles. Expressions for both the adiabatic and non-adiabatic distribution functions are presented, and the heating rate caused by collisional broadening of the separatrix discontinuity is derived. The heating rate is proportional to √νω , provided that ν&lt;&lt;ω, where ν is the collision rate (i.e., the √ν regime of superbanana theory).</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqNikFOwzAQRa2KSi0tC24wYp923CZOWCMQe1iwqwYzIUbuOHicDacnlTgA-ov3pPeNubW4s-iOe7trEGc7LMzaYndfta6try7eYuVc_bYy16pfiFi7plsbfplGzu8k86BkEh1TLhAEysDgU4xBQxKKMDCVIJ-QeiAYI-mZLn06C_Qpe_4A8jmpzlW_J-YfhjEVlhIobs2yp6h888eNuXt6fH14rpKWcFIfCvvBJxH25WQbW3fucPzX6ReriUwc</recordid><startdate>20171128</startdate><enddate>20171128</enddate><creator>Dubin, Daniel H. E.</creator><general>American Institute of Physics (AIP)</general><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20171128</creationdate><title>Superbanana transport in the collisional heating of a plasma column forced across a squeeze potential</title><author>Dubin, Daniel H. E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_15148623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dubin, Daniel H. E.</creatorcontrib><creatorcontrib>Univ. of California, San Diego, CA (United States)</creatorcontrib><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dubin, Daniel H. E.</au><aucorp>Univ. of California, San Diego, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Superbanana transport in the collisional heating of a plasma column forced across a squeeze potential</atitle><jtitle>Physics of plasmas</jtitle><date>2017-11-28</date><risdate>2017</risdate><volume>24</volume><issue>11</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><abstract>When weakly collisional plasmas have locally trapped particle populations, perturbations to the plasma equilibrium (such as waves or static field-errors) can induce phase-space discontinuities in the particle distribution function that strongly enhance entropy production, plasma loss, and wave damping via superbanana transport. Here, this paper presents a simple version of this superbanana transport process, wherein a plasma is heated as it is slowly forced back and forth across a squeeze potential (at a frequency ω that is small compared with the particle bounce frequency). The squeeze potential traps low-energy particles on either side of the squeeze, but particles with higher energy can pass through it. Trapped and passing particles have different responses to the forcing, causing a collisionless discontinuity in the distribution function at the separatrix between the trapped and passing particles. Expressions for both the adiabatic and non-adiabatic distribution functions are presented, and the heating rate caused by collisional broadening of the separatrix discontinuity is derived. The heating rate is proportional to √νω , provided that ν&lt;&lt;ω, where ν is the collision rate (i.e., the √ν regime of superbanana theory).</abstract><cop>United States</cop><pub>American Institute of Physics (AIP)</pub><doi>10.1063/1.5001062</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 1070-664X
ispartof Physics of plasmas, 2017-11, Vol.24 (11)
issn 1070-664X
1089-7674
language eng
recordid cdi_osti_scitechconnect_1514862
source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list); American Institute of Physics
subjects 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
title Superbanana transport in the collisional heating of a plasma column forced across a squeeze potential
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-29T12%3A25%3A10IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-osti&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Superbanana%20transport%20in%20the%20collisional%20heating%20of%20a%20plasma%20column%20forced%20across%20a%20squeeze%20potential&rft.jtitle=Physics%20of%20plasmas&rft.au=Dubin,%20Daniel%20H.%20E.&rft.aucorp=Univ.%20of%20California,%20San%20Diego,%20CA%20(United%20States)&rft.date=2017-11-28&rft.volume=24&rft.issue=11&rft.issn=1070-664X&rft.eissn=1089-7674&rft_id=info:doi/10.1063/1.5001062&rft_dat=%3Costi%3E1514862%3C/osti%3E%3Cgrp_id%3Ecdi_FETCH-osti_scitechconnect_15148623%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true