Laser ablation of YBa2Cu3O7-delta (YBCO) superconductor samples was investigated in a Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS) to determine the morphology of the cluster ions produced. Cluster ion series increase exclusively by addition of BaO and Y2O3 neutral species. Collisionally induced dissociation (CID) of the clusters indicated that BaO was coordinated to the yttrium atoms, leading to preferential loss of BaO, but was coordinated to other BaO units in copper clusters, where Cu loss was observed. The degree of clustering and ion distributions were dependent on laser fluence but were independent of the Nd:YAG laser wavelength. The results suggest that gas-phase growth processes are responsible for the cluster formation. The heats of formation for the cluster ions become more negative as cluster ions size increases.

The rates and quantum yields of internal conversion and intersystem crossing have been measured for several vibronic levels of perdeuterobenzene. The molecule existed in the cold and collisionless environment of a supersonic expansion, while the excited state dynamics were measured by time-resolved multiphoton ionization mass spectrometry. It is found that the onset of rapid internal conversion is lowered by deuteration to ∼2400 cm−1 as compared to 3300 cm−1 for benzene-h6.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNonradiative processes in the channel three region of the S1 state of ultracold benzeneC. E. Otis, J. L. Knee, and P. M. JohnsonCite this: J. Phys. Chem. 1983, 87, 12, 2232–2239Publication Date (Print):June 1, 1983Publication History Published online1 May 2002Published inissue 1 June 1983https://pubs.acs.org/doi/10.1021/j100235a037https://doi.org/10.1021/j100235a037research-articleACS PublicationsRequest reuse permissionsArticle Views134Altmetric-Citations91LEARN 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 ISSUEPREVArticleNEXTPhotochemistry of benzene and oxygen in supersonic cluster beamsJ. L. Knee, C. E. Otis, and Philip M. JohnsonCite this: J. Phys. Chem. 1982, 86, 23, 4467–4469Publication Date (Print):November 1, 1982Publication History Published online1 May 2002Published inissue 1 November 1982https://pubs.acs.org/doi/10.1021/j100220a002https://doi.org/10.1021/j100220a002research-articleACS PublicationsRequest reuse permissionsArticle Views60Altmetric-Citations4LEARN 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

The ac Stark effect is observed to be the major cause of asymmetric line broadening in the low-pressure MPI spectrum of nitric oxide. The order of non-linearity near a resonance broadened by Stark shifts can be much higher than the minimum number of photons required to ionize the molecule.

Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More