Line shape analysis of Doppler broadened frequency-modulated line spectra
We present a method for recovering Doppler broadened absorption line shapes from frequency modulated (FM) line spectra. The method of analysis is calibrated and demonstrated with thermalized CN radicals produced by photodissociation of cyanogen (NCCN), probed on the A–X system near 800 nm with a fre...
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| Veröffentlicht in: | Journal of Chemical Physics 1996-02, Vol.104 (6), p.2129-2135 |
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| container_end_page | 2135 |
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| container_issue | 6 |
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| container_title | Journal of Chemical Physics |
| container_volume | 104 |
| creator | North, Simon W. Zheng, Xiaonan S. Fei, Ruian Hall, Gregory E. |
| description | We present a method for recovering Doppler broadened absorption line shapes from frequency modulated (FM) line spectra. The method of analysis is calibrated and demonstrated with thermalized CN radicals produced by photodissociation of cyanogen (NCCN), probed on the A–X system near 800 nm with a frequency modulated Ti: sapphire ring laser. Nonthermal, Doppler broadened lines from translationally nascent photofragments can also be recovered by direct transformations of experimental FM line profiles acquired with a time resolution exceeding 100 ns. The superior signal-to-noise afforded by FM spectroscopy, relative to other direct absorption methods, should encourage the application of transient FM spectroscopy to problems in photoinitiated reaction dynamics. |
| doi_str_mv | 10.1063/1.470969 |
| format | Article |
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(BNL), Upton, NY (United States)</creatorcontrib><description>We present a method for recovering Doppler broadened absorption line shapes from frequency modulated (FM) line spectra. The method of analysis is calibrated and demonstrated with thermalized CN radicals produced by photodissociation of cyanogen (NCCN), probed on the A–X system near 800 nm with a frequency modulated Ti: sapphire ring laser. Nonthermal, Doppler broadened lines from translationally nascent photofragments can also be recovered by direct transformations of experimental FM line profiles acquired with a time resolution exceeding 100 ns. The superior signal-to-noise afforded by FM spectroscopy, relative to other direct absorption methods, should encourage the application of transient FM spectroscopy to problems in photoinitiated reaction dynamics.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.470969</identifier><language>eng</language><publisher>United States</publisher><subject>40 CHEMISTRY ; ABSORPTION SPECTROSCOPY ; CYANOGEN ; DOPPLER BROADENING ; FREQUENCY MODULATION ; LASER RADIATION ; LEAST SQUARE FIT ; LINE BROADENING ; LINE SHAPE ; LINE SPECTRA ; PHOTOCHEMICAL REACTIONS ; PHOTODISSOCIATION ; PHYSICS ; SIGNAL-TO-NOISE RATIO</subject><ispartof>Journal of Chemical Physics, 1996-02, Vol.104 (6), p.2129-2135</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c251t-27c471a8f468ca95146da57dc2dca05a96874ca1be4a1667f00bc69c32c25f9b3</citedby><cites>FETCH-LOGICAL-c251t-27c471a8f468ca95146da57dc2dca05a96874ca1be4a1667f00bc69c32c25f9b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/277190$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>North, Simon W.</creatorcontrib><creatorcontrib>Zheng, Xiaonan S.</creatorcontrib><creatorcontrib>Fei, Ruian</creatorcontrib><creatorcontrib>Hall, Gregory E.</creatorcontrib><creatorcontrib>Brookhaven National Lab. (BNL), Upton, NY (United States)</creatorcontrib><title>Line shape analysis of Doppler broadened frequency-modulated line spectra</title><title>Journal of Chemical Physics</title><description>We present a method for recovering Doppler broadened absorption line shapes from frequency modulated (FM) line spectra. The method of analysis is calibrated and demonstrated with thermalized CN radicals produced by photodissociation of cyanogen (NCCN), probed on the A–X system near 800 nm with a frequency modulated Ti: sapphire ring laser. Nonthermal, Doppler broadened lines from translationally nascent photofragments can also be recovered by direct transformations of experimental FM line profiles acquired with a time resolution exceeding 100 ns. The superior signal-to-noise afforded by FM spectroscopy, relative to other direct absorption methods, should encourage the application of transient FM spectroscopy to problems in photoinitiated reaction dynamics.</description><subject>40 CHEMISTRY</subject><subject>ABSORPTION SPECTROSCOPY</subject><subject>CYANOGEN</subject><subject>DOPPLER BROADENING</subject><subject>FREQUENCY MODULATION</subject><subject>LASER RADIATION</subject><subject>LEAST SQUARE FIT</subject><subject>LINE BROADENING</subject><subject>LINE SHAPE</subject><subject>LINE SPECTRA</subject><subject>PHOTOCHEMICAL REACTIONS</subject><subject>PHOTODISSOCIATION</subject><subject>PHYSICS</subject><subject>SIGNAL-TO-NOISE RATIO</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNotkM1OwzAQhC0EEqUg8QjhxiVl13Hs-IjKX6VKXOBsbTa2GpQmwU4PfXsC5TTSaL7RaIS4RVgh6OIBV8qA1fZMLBAqmxtt4VwsACTmVoO-FFcpfQEAGqkWYrNte5-lHY0-o566Y2pTNoTsaRjHzsesjgM1vvdNFqL_Pviej_l-aA4dTbPX_cGj5ynStbgI1CV_869L8fny_LF-y7fvr5v14zZnWeKUS8PKIFVB6YrJlqh0Q6VpWDZMUJLVlVFMWHtFqLUJADVry4Wc-WDrYinuTr1DmlqXuJ0873jo-3mFk8aghTlzf8pwHFKKPrgxtnuKR4fgfm9y6E43FT_YNFnY</recordid><startdate>19960208</startdate><enddate>19960208</enddate><creator>North, Simon W.</creator><creator>Zheng, Xiaonan S.</creator><creator>Fei, Ruian</creator><creator>Hall, Gregory E.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19960208</creationdate><title>Line shape analysis of Doppler broadened frequency-modulated line spectra</title><author>North, Simon W. ; Zheng, Xiaonan S. ; Fei, Ruian ; Hall, Gregory E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c251t-27c471a8f468ca95146da57dc2dca05a96874ca1be4a1667f00bc69c32c25f9b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>40 CHEMISTRY</topic><topic>ABSORPTION SPECTROSCOPY</topic><topic>CYANOGEN</topic><topic>DOPPLER BROADENING</topic><topic>FREQUENCY MODULATION</topic><topic>LASER RADIATION</topic><topic>LEAST SQUARE FIT</topic><topic>LINE BROADENING</topic><topic>LINE SHAPE</topic><topic>LINE SPECTRA</topic><topic>PHOTOCHEMICAL REACTIONS</topic><topic>PHOTODISSOCIATION</topic><topic>PHYSICS</topic><topic>SIGNAL-TO-NOISE RATIO</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>North, Simon W.</creatorcontrib><creatorcontrib>Zheng, Xiaonan S.</creatorcontrib><creatorcontrib>Fei, Ruian</creatorcontrib><creatorcontrib>Hall, Gregory E.</creatorcontrib><creatorcontrib>Brookhaven National Lab. 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The method of analysis is calibrated and demonstrated with thermalized CN radicals produced by photodissociation of cyanogen (NCCN), probed on the A–X system near 800 nm with a frequency modulated Ti: sapphire ring laser. Nonthermal, Doppler broadened lines from translationally nascent photofragments can also be recovered by direct transformations of experimental FM line profiles acquired with a time resolution exceeding 100 ns. The superior signal-to-noise afforded by FM spectroscopy, relative to other direct absorption methods, should encourage the application of transient FM spectroscopy to problems in photoinitiated reaction dynamics.</abstract><cop>United States</cop><doi>10.1063/1.470969</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of Chemical Physics, 1996-02, Vol.104 (6), p.2129-2135 |
| issn | 0021-9606 1089-7690 |
| language | eng |
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| source | AIP Digital Archive |
| subjects | 40 CHEMISTRY ABSORPTION SPECTROSCOPY CYANOGEN DOPPLER BROADENING FREQUENCY MODULATION LASER RADIATION LEAST SQUARE FIT LINE BROADENING LINE SHAPE LINE SPECTRA PHOTOCHEMICAL REACTIONS PHOTODISSOCIATION PHYSICS SIGNAL-TO-NOISE RATIO |
| title | Line shape analysis of Doppler broadened frequency-modulated line spectra |
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