193 nm photodissociation of acetylene
The product translational energy distribution P(ET) for acetylene photodissociation at 193 nm was obtained from the time-of-flight spectrum of the H atom fragments. The P(ET) shows resolved structure from the vibrational and electronic excitation of the C2H fragment; comparison of the translational...
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| Veröffentlicht in: | The Journal of chemical physics 1991-06, Vol.94 (12), p.7958-7966 |
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| container_end_page | 7966 |
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| container_issue | 12 |
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| container_title | The Journal of chemical physics |
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| creator | BALKO, B. A ZHANG, J LEE, Y. T |
| description | The product translational energy distribution P(ET) for acetylene photodissociation at 193 nm was obtained from the time-of-flight spectrum of the H atom fragments. The P(ET) shows resolved structure from the vibrational and electronic excitation of the C2H fragment; comparison of the translational energy release for given excited states of C2H with the known energy levels of these states gives D0(HCC–H)=131.4±0.5 kcal/mol. This value is in agreement with that determined previously in this group from analogous studies of the C2H fragment and with the latest experimental and theoretical work. The high resolution of the experiment also reveals the nature of C2H internal excitation. A significant fraction of the H atoms detected at moderate laser power were from the secondary dissociation of C2H. The P(ET) derived for this channel indicates that most of the C2 is produced in excited electronic states. |
| doi_str_mv | 10.1063/1.460130 |
| format | Article |
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T</creator><creatorcontrib>BALKO, B. A ; ZHANG, J ; LEE, Y. T</creatorcontrib><description>The product translational energy distribution P(ET) for acetylene photodissociation at 193 nm was obtained from the time-of-flight spectrum of the H atom fragments. The P(ET) shows resolved structure from the vibrational and electronic excitation of the C2H fragment; comparison of the translational energy release for given excited states of C2H with the known energy levels of these states gives D0(HCC–H)=131.4±0.5 kcal/mol. This value is in agreement with that determined previously in this group from analogous studies of the C2H fragment and with the latest experimental and theoretical work. The high resolution of the experiment also reveals the nature of C2H internal excitation. A significant fraction of the H atoms detected at moderate laser power were from the secondary dissociation of C2H. The P(ET) derived for this channel indicates that most of the C2 is produced in excited electronic states.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.460130</identifier><identifier>CODEN: JCPSA6</identifier><language>eng</language><publisher>Woodbury, NY: American Institute of Physics</publisher><subject>400500 - Photochemistry ; ACETYLENE ; ALKYNES ; Atomic and molecular physics ; CHEMICAL BONDS ; CHEMICAL REACTIONS ; DECOMPOSITION ; DISSOCIATION ; ELECTROMAGNETIC RADIATION ; Exact sciences and technology ; FAR ULTRAVIOLET RADIATION ; HYDROCARBONS ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; Molecular properties and interactions with photons ; ORGANIC COMPOUNDS ; PHOTOCHEMICAL REACTIONS ; PHOTOLYSIS ; Photon interactions with molecules ; Physics ; RADIATIONS ; TIME-OF-FLIGHT METHOD ; ULTRAVIOLET RADIATION</subject><ispartof>The Journal of chemical physics, 1991-06, Vol.94 (12), p.7958-7966</ispartof><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-6214bc5ad22e2baf98c1c0b9916d65553ef598b217abfe63c6da32c7d3cb6d6f3</citedby><cites>FETCH-LOGICAL-c381t-6214bc5ad22e2baf98c1c0b9916d65553ef598b217abfe63c6da32c7d3cb6d6f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4951260$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/5683809$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>BALKO, B. A</creatorcontrib><creatorcontrib>ZHANG, J</creatorcontrib><creatorcontrib>LEE, Y. T</creatorcontrib><title>193 nm photodissociation of acetylene</title><title>The Journal of chemical physics</title><description>The product translational energy distribution P(ET) for acetylene photodissociation at 193 nm was obtained from the time-of-flight spectrum of the H atom fragments. The P(ET) shows resolved structure from the vibrational and electronic excitation of the C2H fragment; comparison of the translational energy release for given excited states of C2H with the known energy levels of these states gives D0(HCC–H)=131.4±0.5 kcal/mol. This value is in agreement with that determined previously in this group from analogous studies of the C2H fragment and with the latest experimental and theoretical work. The high resolution of the experiment also reveals the nature of C2H internal excitation. A significant fraction of the H atoms detected at moderate laser power were from the secondary dissociation of C2H. The P(ET) derived for this channel indicates that most of the C2 is produced in excited electronic states.</description><subject>400500 - Photochemistry</subject><subject>ACETYLENE</subject><subject>ALKYNES</subject><subject>Atomic and molecular physics</subject><subject>CHEMICAL BONDS</subject><subject>CHEMICAL REACTIONS</subject><subject>DECOMPOSITION</subject><subject>DISSOCIATION</subject><subject>ELECTROMAGNETIC RADIATION</subject><subject>Exact sciences and technology</subject><subject>FAR ULTRAVIOLET RADIATION</subject><subject>HYDROCARBONS</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>Molecular properties and interactions with photons</subject><subject>ORGANIC COMPOUNDS</subject><subject>PHOTOCHEMICAL REACTIONS</subject><subject>PHOTOLYSIS</subject><subject>Photon interactions with molecules</subject><subject>Physics</subject><subject>RADIATIONS</subject><subject>TIME-OF-FLIGHT METHOD</subject><subject>ULTRAVIOLET RADIATION</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNo90E1LxDAUheEgCtZR8CcUUXDT8d6kSZulDOMHDLjRdUhvEybSaUqTzfx7RyquzubhLF7GbhHWCEo84bpWgALOWIHQ6qpRGs5ZAcCx0grUJbtK6RsAsOF1wR5Qi3I8lNM-5tiHlCIFm0Mcy-hLSy4fBze6a3bh7ZDczd-u2NfL9nPzVu0-Xt83z7uKRIu5UhzrjqTtOXe8s163hASd1qh6JaUUzkvddhwb23mnBKneCk5NL6g7CS9W7G75jSkHkyhkR3uK4-goG6la0YI-occF0RxTmp030xwOdj4aBPPbwKBZGpzo_UInm8gOfrYjhfTvay2RKxA_cD5Y8g</recordid><startdate>19910615</startdate><enddate>19910615</enddate><creator>BALKO, B. A</creator><creator>ZHANG, J</creator><creator>LEE, Y. T</creator><general>American Institute of Physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19910615</creationdate><title>193 nm photodissociation of acetylene</title><author>BALKO, B. A ; ZHANG, J ; LEE, Y. T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c381t-6214bc5ad22e2baf98c1c0b9916d65553ef598b217abfe63c6da32c7d3cb6d6f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>400500 - Photochemistry</topic><topic>ACETYLENE</topic><topic>ALKYNES</topic><topic>Atomic and molecular physics</topic><topic>CHEMICAL BONDS</topic><topic>CHEMICAL REACTIONS</topic><topic>DECOMPOSITION</topic><topic>DISSOCIATION</topic><topic>ELECTROMAGNETIC RADIATION</topic><topic>Exact sciences and technology</topic><topic>FAR ULTRAVIOLET RADIATION</topic><topic>HYDROCARBONS</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>Molecular properties and interactions with photons</topic><topic>ORGANIC COMPOUNDS</topic><topic>PHOTOCHEMICAL REACTIONS</topic><topic>PHOTOLYSIS</topic><topic>Photon interactions with molecules</topic><topic>Physics</topic><topic>RADIATIONS</topic><topic>TIME-OF-FLIGHT METHOD</topic><topic>ULTRAVIOLET RADIATION</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>BALKO, B. A</creatorcontrib><creatorcontrib>ZHANG, J</creatorcontrib><creatorcontrib>LEE, Y. T</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>BALKO, B. A</au><au>ZHANG, J</au><au>LEE, Y. T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>193 nm photodissociation of acetylene</atitle><jtitle>The Journal of chemical physics</jtitle><date>1991-06-15</date><risdate>1991</risdate><volume>94</volume><issue>12</issue><spage>7958</spage><epage>7966</epage><pages>7958-7966</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>The product translational energy distribution P(ET) for acetylene photodissociation at 193 nm was obtained from the time-of-flight spectrum of the H atom fragments. The P(ET) shows resolved structure from the vibrational and electronic excitation of the C2H fragment; comparison of the translational energy release for given excited states of C2H with the known energy levels of these states gives D0(HCC–H)=131.4±0.5 kcal/mol. This value is in agreement with that determined previously in this group from analogous studies of the C2H fragment and with the latest experimental and theoretical work. The high resolution of the experiment also reveals the nature of C2H internal excitation. A significant fraction of the H atoms detected at moderate laser power were from the secondary dissociation of C2H. The P(ET) derived for this channel indicates that most of the C2 is produced in excited electronic states.</abstract><cop>Woodbury, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.460130</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The Journal of chemical physics, 1991-06, Vol.94 (12), p.7958-7966 |
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| language | eng |
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| source | AIP Digital Archive |
| subjects | 400500 - Photochemistry ACETYLENE ALKYNES Atomic and molecular physics CHEMICAL BONDS CHEMICAL REACTIONS DECOMPOSITION DISSOCIATION ELECTROMAGNETIC RADIATION Exact sciences and technology FAR ULTRAVIOLET RADIATION HYDROCARBONS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY Molecular properties and interactions with photons ORGANIC COMPOUNDS PHOTOCHEMICAL REACTIONS PHOTOLYSIS Photon interactions with molecules Physics RADIATIONS TIME-OF-FLIGHT METHOD ULTRAVIOLET RADIATION |
| title | 193 nm photodissociation of acetylene |
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