Determining Metastable Ion Lifetime and History through Wave-Particle Interaction
Laser-induced fluorescence (LIF) performed on metastable ions is frequently used to probe the dynamics of ground-state ion motions in many laboratory plasmas. However, these measurements place restrictions on the metastable ion lifetime. Metastable states are produced from direct ionization of neutr...
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| Veröffentlicht in: | Physical review letters 2019-02, Vol.122 (7) |
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| creator | Chu, F. Skiff, F. |
| description | Laser-induced fluorescence (LIF) performed on metastable ions is frequently used to probe the dynamics of ground-state ion motions in many laboratory plasmas. However, these measurements place restrictions on the metastable ion lifetime. Metastable states are produced from direct ionization of neutral atoms as well as ions in other electronic states, of which the former will only faithfully represent processes that act on the ion dynamics in a time shorter than the metastable lifetime. We present here the first experimental study of this type of systematic effect using wave-particle interaction in an argon multidipole plasma. Furthermore, the metastable lifetime and relative fraction of metastables produced from preexisting ions, necessary for correcting the LIF measurement errors, can be determined by fitting the experimental results with the theory we propose. |
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However, these measurements place restrictions on the metastable ion lifetime. Metastable states are produced from direct ionization of neutral atoms as well as ions in other electronic states, of which the former will only faithfully represent processes that act on the ion dynamics in a time shorter than the metastable lifetime. We present here the first experimental study of this type of systematic effect using wave-particle interaction in an argon multidipole plasma. 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Furthermore, the metastable lifetime and relative fraction of metastables produced from preexisting ions, necessary for correcting the LIF measurement errors, can be determined by fitting the experimental results with the theory we propose.</description><subject>ATOMIC AND MOLECULAR PHYSICS</subject><subject>Electronic excitation & ionization</subject><subject>Electrostatic waves & oscillations</subject><subject>Fluorescence spectroscopy</subject><subject>Laser light absorption in plasmas</subject><subject>Laser spectroscopy</subject><subject>Optical pumping</subject><subject>Physics</subject><subject>Plasma discharges in vacuum</subject><subject>Wave-wave, wave-particle interactions</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqNzMkKwjAUQNEgCtbhH4L7QNJqh7UDCgoKgssS42v7pE0geQr-vQp-gKu7Odwei5TMCpEpNe-zSMpEiULKbMhGIdyllCpO84idVkDgO7Roa34A0oH0tQW-c5bvsQLCDri2N77FQM6_ODXePeqGX_QTxFF7QvPl9nPRhtDZCRtUug0w_XXMZpv1ebkVLhCWwSCBaYyzFgyVKlXxIo-Tv9AbRBBAtg</recordid><startdate>20190219</startdate><enddate>20190219</enddate><creator>Chu, F.</creator><creator>Skiff, F.</creator><general>American Physical Society (APS)</general><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20190219</creationdate><title>Determining Metastable Ion Lifetime and History through Wave-Particle Interaction</title><author>Chu, F. ; Skiff, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_16125823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>ATOMIC AND MOLECULAR PHYSICS</topic><topic>Electronic excitation & ionization</topic><topic>Electrostatic waves & oscillations</topic><topic>Fluorescence spectroscopy</topic><topic>Laser light absorption in plasmas</topic><topic>Laser spectroscopy</topic><topic>Optical pumping</topic><topic>Physics</topic><topic>Plasma discharges in vacuum</topic><topic>Wave-wave, wave-particle interactions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chu, F.</creatorcontrib><creatorcontrib>Skiff, F.</creatorcontrib><creatorcontrib>Univ. of Iowa, Iowa City, IA (United States)</creatorcontrib><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chu, F.</au><au>Skiff, F.</au><aucorp>Univ. of Iowa, Iowa City, IA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determining Metastable Ion Lifetime and History through Wave-Particle Interaction</atitle><jtitle>Physical review letters</jtitle><date>2019-02-19</date><risdate>2019</risdate><volume>122</volume><issue>7</issue><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>Laser-induced fluorescence (LIF) performed on metastable ions is frequently used to probe the dynamics of ground-state ion motions in many laboratory plasmas. However, these measurements place restrictions on the metastable ion lifetime. Metastable states are produced from direct ionization of neutral atoms as well as ions in other electronic states, of which the former will only faithfully represent processes that act on the ion dynamics in a time shorter than the metastable lifetime. We present here the first experimental study of this type of systematic effect using wave-particle interaction in an argon multidipole plasma. Furthermore, the metastable lifetime and relative fraction of metastables produced from preexisting ions, necessary for correcting the LIF measurement errors, can be determined by fitting the experimental results with the theory we propose.</abstract><cop>United States</cop><pub>American Physical Society (APS)</pub><oa>free_for_read</oa></addata></record> |
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| ispartof | Physical review letters, 2019-02, Vol.122 (7) |
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| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | ATOMIC AND MOLECULAR PHYSICS Electronic excitation & ionization Electrostatic waves & oscillations Fluorescence spectroscopy Laser light absorption in plasmas Laser spectroscopy Optical pumping Physics Plasma discharges in vacuum Wave-wave, wave-particle interactions |
| title | Determining Metastable Ion Lifetime and History through Wave-Particle Interaction |
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