ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe pump-pump picosecond mass spectrometric technique and the rate of energy distribution prior to ionic fragmentation of 2,4-hexadiyne by laser multiphoton processesD. A. Gobeli and M. A. El-SayedCite this: J. Phys. Chem. 1985, 89, 9, 1722–1729Publication Date (Print):April 1, 1985Publication History Published online1 May 2002Published inissue 1 April 1985https://pubs.acs.org/doi/10.1021/j100255a037https://doi.org/10.1021/j100255a037research-articleACS PublicationsRequest reuse permissionsArticle Views18Altmetric-Citations6LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChange in the mechanism of laser multiphoton ionization-dissociation in benzaldehyde by changing the laser pulse widthYang. J. J., D. A. Gobeli, and M. A. El-SayedCite this: J. Phys. Chem. 1985, 89, 15, 3426–3429Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://doi.org/10.1021/j100261a053Request reuse permissionsArticle Views167Altmetric-Citations45LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (493 KB) Get e-Alerts

The dynamics of energy redistribution in multiphoton ionization dissociation (MPID) of 2,4-hexadiyne have been studied with a two-color picosecond laser mass spectrometric technique. Two picosecond lasers, (25 ps fwhm) the 266 nm and 532 nm outputs of a Nd:YAG laser are used as the two pump sources in this experiment. By monitoring the parent and daughter ions as a function of a variable delay between the two pump lasers, dynamic information about energy redistribution in the electronic states of the molecule and the parent ion responsible for the formation of the different daughter ions may be obtained.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLaser multiphoton ionization-dissociation mass spectrometryD. A. Gobeli, J. J. Yang, and M. A. El-SayedCite this: Chem. Rev. 1985, 85, 6, 529–554Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Published inissue 1 December 1985https://pubs.acs.org/doi/10.1021/cr00070a002https://doi.org/10.1021/cr00070a002research-articleACS PublicationsRequest reuse permissionsArticle Views470Altmetric-Citations80LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of multiphoton ionization-dissociation of 2,4-hexadiyne by the two-color picosecond pump-pump mass spectrometric technique: formation of C6H5+, C4H4+, and C4H3+ ionsD. A. Gobeli, J. D. Simon, and M. A. El-SayedCite this: J. Phys. Chem. 1984, 88, 18, 3949–3951Publication Date (Print):August 1, 1984Publication History Published online1 May 2002Published inissue 1 August 1984https://pubs.acs.org/doi/10.1021/j150662a015https://doi.org/10.1021/j150662a015research-articleACS PublicationsRequest reuse permissionsArticle Views56Altmetric-Citations5LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts

Chemischer InformationsdienstVolume 15, Issue 17 Preparative Organic Chemistry ChemInform Abstract: STUDIES OF RAPID DYNAMICS IN LASER-MULTIPHOTON IONIZATION DISSOCIATION MASS SPECTROMETRY BY USING PUMP-PUMP TWO-COLOR PICOSECOND LASERS: 2,4-HEXADIYNE D. A. GOBELI, D. A. GOBELISearch for more papers by this authorJ. R. MORGAN, J. R. MORGANSearch for more papers by this authorR. J. ST. PIERRE, R. J. ST. PIERRESearch for more papers by this authorM. A. EL-SAYED, M. A. EL-SAYEDSearch for more papers by this author D. A. GOBELI, D. A. GOBELISearch for more papers by this authorJ. R. MORGAN, J. R. MORGANSearch for more papers by this authorR. J. ST. PIERRE, R. J. ST. PIERRESearch for more papers by this authorM. A. EL-SAYED, M. A. EL-SAYEDSearch for more papers by this author First published: April 24, 1984 https://doi.org/10.1002/chin.198417118Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume15, Issue17April 24, 1984 RelatedInformation

Chemischer InformationsdienstVolume 14, Issue 39 Preparative Organic Chemistry ChemInform Abstract: WAVELENGTH DEPENDENCE OF THE MULTIPHOTON IONIZATION-FRAGMENTATION MASS SPECTROMETRIC PATTERN OF BENZALDEHYDE J. J. YANG, J. J. YANGSearch for more papers by this authorD. A. GOBELI, D. A. GOBELISearch for more papers by this authorR. S. PANDOLFI, R. S. PANDOLFISearch for more papers by this authorM. A. EL-SAYED, M. A. EL-SAYEDSearch for more papers by this author J. J. YANG, J. J. YANGSearch for more papers by this authorD. A. GOBELI, D. A. GOBELISearch for more papers by this authorR. S. PANDOLFI, R. S. PANDOLFISearch for more papers by this authorM. A. EL-SAYED, M. A. EL-SAYEDSearch for more papers by this author First published: September 27, 1983 https://doi.org/10.1002/chin.198339134AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume14, Issue39September 27, 1983 RelatedInformation

Time of flight (TOF) mass spectrometry is used in conjunction with a variable repelling voltage technique to elucidate the mechanism by which phenol ionizes and dissociates under 266 nm pulsed laser irradiation in combination with a 532 nm or 355 nm pulsed laser. The results suggest that, like benzene, the molecular ion is the predominant precursor of all ionic species generated in the process. Predominance of species at relatively low powers confirms the presence of a low energy dissociation channel involving the elimination of CO. The use of a second laser at 532 nm is found to selectively destroy the (as compared to the parent ion) species. The parent ion is found to be protected from the radiation of the second laser pulse at 532 nm but not at 355 nm if the second laser pulse is delayed by 50 ns. This is explained in terms of relaxation within the parent ion energy levels, the location of a low energy dissociation channel and the wavelengths of the lasers used. The main aspects of the fragmentation pattern are discussed in terms of the statistical theory of Rebentrost and Ben‐Shaul.