Advantage of spatial map ion imaging in the study of large molecule photodissociation
The original ion imaging technique has low velocity resolution, and currently, photodissociation is mostly investigated using velocity map ion imaging. However, separating signals from the background (resulting from undissociated excited parent molecules) is difficult when velocity map ion imaging i...
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Veröffentlicht in: | The Journal of chemical physics 2017-07, Vol.147 (1), p.013904-013904 |
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creator | Lee, Chin Lin, Yen-Cheng Lee, Shih-Huang Lee, Yin-Yu Tseng, Chien-Ming Lee, Yuan-Tseh Ni, Chi-Kung |
description | The original ion imaging technique has low velocity resolution, and currently, photodissociation is mostly investigated using velocity map ion imaging. However, separating signals from the background (resulting from undissociated excited parent molecules) is difficult when velocity map ion imaging is used for the photodissociation of large molecules (number of atoms ≥ 10). In this study, we used the photodissociation of phenol at the S1 band origin as an example to demonstrate how our multimass ion imaging technique, based on modified spatial map ion imaging, can overcome this difficulty. The photofragment translational energy distribution obtained when multimass ion imaging was used differed considerably from that obtained when velocity map ion imaging and Rydberg atom tagging were used. We used conventional translational spectroscopy as a second method to further confirm the experimental results, and we conclude that data should be interpreted carefully when velocity map ion imaging or Rydberg atom tagging is used in the photodissociation of large molecules. Finally, we propose a modified velocity map ion imaging technique without the disadvantages of the current velocity map ion imaging technique. |
doi_str_mv | 10.1063/1.4975671 |
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However, separating signals from the background (resulting from undissociated excited parent molecules) is difficult when velocity map ion imaging is used for the photodissociation of large molecules (number of atoms ≥ 10). In this study, we used the photodissociation of phenol at the S1 band origin as an example to demonstrate how our multimass ion imaging technique, based on modified spatial map ion imaging, can overcome this difficulty. The photofragment translational energy distribution obtained when multimass ion imaging was used differed considerably from that obtained when velocity map ion imaging and Rydberg atom tagging were used. We used conventional translational spectroscopy as a second method to further confirm the experimental results, and we conclude that data should be interpreted carefully when velocity map ion imaging or Rydberg atom tagging is used in the photodissociation of large molecules. Finally, we propose a modified velocity map ion imaging technique without the disadvantages of the current velocity map ion imaging technique.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.4975671</identifier><identifier>PMID: 28688420</identifier><identifier>CODEN: JCPSA6</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>Atomic properties ; Energy distribution ; Imaging ; Marking ; Photodissociation ; Physics ; Velocity</subject><ispartof>The Journal of chemical physics, 2017-07, Vol.147 (1), p.013904-013904</ispartof><rights>Author(s)</rights><rights>2017 Author(s). 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However, separating signals from the background (resulting from undissociated excited parent molecules) is difficult when velocity map ion imaging is used for the photodissociation of large molecules (number of atoms ≥ 10). In this study, we used the photodissociation of phenol at the S1 band origin as an example to demonstrate how our multimass ion imaging technique, based on modified spatial map ion imaging, can overcome this difficulty. The photofragment translational energy distribution obtained when multimass ion imaging was used differed considerably from that obtained when velocity map ion imaging and Rydberg atom tagging were used. We used conventional translational spectroscopy as a second method to further confirm the experimental results, and we conclude that data should be interpreted carefully when velocity map ion imaging or Rydberg atom tagging is used in the photodissociation of large molecules. Finally, we propose a modified velocity map ion imaging technique without the disadvantages of the current velocity map ion imaging technique.</description><subject>Atomic properties</subject><subject>Energy distribution</subject><subject>Imaging</subject><subject>Marking</subject><subject>Photodissociation</subject><subject>Physics</subject><subject>Velocity</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp90EtLxDAUhuEgio6jC_-ABNyo0PEkza1LGbzBgBtdlzQ9HSNtU5tW8N9bndGFC1fZPPk4vIScMFgwUOkVW4hMS6XZDpkxMFmiVQa7ZAbAWZIpUAfkMMZXAGCai31ywI0yRnCYkefr8t22g10jDRWNnR28rWljO-pDS31j175dU9_S4QVpHMby48vVtp8-NKFGN9ZIu5cwhNLHGJyfBkJ7RPYqW0c83r5z8nx787S8T1aPdw_L61XiBBNDoiRam4Lm1pnCpoWsuMNKy9KhNKqQApXjWkFmQBQMyhIlR54WaJUFTE06J-eb3a4PbyPGIW98dFjXtsUwxpxlTCulpYCJnv2hr2Hs2-m6nDMuZCqk4ZO62CjXhxh7rPKunyL0HzmD_Kt1zvJt68mebhfHosHyV_7EncDlBkTnh-8u_6x9ArHNhhM</recordid><startdate>20170707</startdate><enddate>20170707</enddate><creator>Lee, Chin</creator><creator>Lin, Yen-Cheng</creator><creator>Lee, Shih-Huang</creator><creator>Lee, Yin-Yu</creator><creator>Tseng, Chien-Ming</creator><creator>Lee, Yuan-Tseh</creator><creator>Ni, Chi-Kung</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-6503-8905</orcidid><orcidid>https://orcid.org/0000000165038905</orcidid></search><sort><creationdate>20170707</creationdate><title>Advantage of spatial map ion imaging in the study of large molecule photodissociation</title><author>Lee, Chin ; Lin, Yen-Cheng ; Lee, Shih-Huang ; Lee, Yin-Yu ; Tseng, Chien-Ming ; Lee, Yuan-Tseh ; Ni, Chi-Kung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c414t-65eaa3072ac8ba3b5f2cef75dce586b54e6c27609804b10dde52e23bea6a0e383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Atomic properties</topic><topic>Energy distribution</topic><topic>Imaging</topic><topic>Marking</topic><topic>Photodissociation</topic><topic>Physics</topic><topic>Velocity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Chin</creatorcontrib><creatorcontrib>Lin, Yen-Cheng</creatorcontrib><creatorcontrib>Lee, Shih-Huang</creatorcontrib><creatorcontrib>Lee, Yin-Yu</creatorcontrib><creatorcontrib>Tseng, Chien-Ming</creatorcontrib><creatorcontrib>Lee, Yuan-Tseh</creatorcontrib><creatorcontrib>Ni, Chi-Kung</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Chin</au><au>Lin, Yen-Cheng</au><au>Lee, Shih-Huang</au><au>Lee, Yin-Yu</au><au>Tseng, Chien-Ming</au><au>Lee, Yuan-Tseh</au><au>Ni, Chi-Kung</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Advantage of spatial map ion imaging in the study of large molecule photodissociation</atitle><jtitle>The Journal of chemical physics</jtitle><addtitle>J Chem Phys</addtitle><date>2017-07-07</date><risdate>2017</risdate><volume>147</volume><issue>1</issue><spage>013904</spage><epage>013904</epage><pages>013904-013904</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>The original ion imaging technique has low velocity resolution, and currently, photodissociation is mostly investigated using velocity map ion imaging. However, separating signals from the background (resulting from undissociated excited parent molecules) is difficult when velocity map ion imaging is used for the photodissociation of large molecules (number of atoms ≥ 10). In this study, we used the photodissociation of phenol at the S1 band origin as an example to demonstrate how our multimass ion imaging technique, based on modified spatial map ion imaging, can overcome this difficulty. The photofragment translational energy distribution obtained when multimass ion imaging was used differed considerably from that obtained when velocity map ion imaging and Rydberg atom tagging were used. We used conventional translational spectroscopy as a second method to further confirm the experimental results, and we conclude that data should be interpreted carefully when velocity map ion imaging or Rydberg atom tagging is used in the photodissociation of large molecules. Finally, we propose a modified velocity map ion imaging technique without the disadvantages of the current velocity map ion imaging technique.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>28688420</pmid><doi>10.1063/1.4975671</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0001-6503-8905</orcidid><orcidid>https://orcid.org/0000000165038905</orcidid></addata></record> |
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subjects | Atomic properties Energy distribution Imaging Marking Photodissociation Physics Velocity |
title | Advantage of spatial map ion imaging in the study of large molecule photodissociation |
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