دورية أكاديمية
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Transient vibration and product formation of photoexcited CS 2 measured by time-resolved x-ray scattering.

التفاصيل البيبلوغرافية
العنوان: Transient vibration and product formation of photoexcited CS 2 measured by time-resolved x-ray scattering.
المؤلفون: Gabalski I; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Sere M; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Acheson K; School of Chemistry, University of Edinburgh, Edinburgh EH8 9YL, United Kingdom., Allum F; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Boutet S; Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Dixit G; Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India., Forbes R; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Glownia JM; Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Goff N; Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA., Hegazy K; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Howard AJ; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Liang M; Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Minitti MP; Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Minns RS; School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom., Natan A; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Peard N; Department of Applied Physics, Stanford University, Stanford, California 94305, USA., Rasmus WO; School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom., Sension RJ; Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA., Ware MR; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Weber PM; Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA., Werby N; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Wolf TJA; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Kirrander A; Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QX Oxford, United Kingdom., Bucksbaum PH; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
المصدر: The Journal of chemical physics [J Chem Phys] 2022 Oct 28; Vol. 157 (16), pp. 164305.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Institute of Physics Country of Publication: United States NLM ID: 0375360 Publication Model: Print Cited Medium: Internet ISSN: 1089-7690 (Electronic) Linking ISSN: 00219606 NLM ISO Abbreviation: J Chem Phys Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Publication: New York, NY : American Institute of Physics
Original Publication: Lancaster, Pa., American Institute of Physics.
مستخلص: We have observed details of the internal motion and dissociation channels in photoexcited carbon disulfide (CS 2 ) using time-resolved x-ray scattering (TRXS). Photoexcitation of gas-phase CS 2 with a 200 nm laser pulse launches oscillatory bending and stretching motion, leading to dissociation of atomic sulfur in under a picosecond. During the first 300 fs following excitation, we observe significant changes in the vibrational frequency as well as some dissociation of the C-S bond, leading to atomic sulfur in the both 1 D and 3 P states. Beyond 1400 fs, the dissociation is consistent with primarily 3 P atomic sulfur dissociation. This channel-resolved measurement of the dissociation time is based on our analysis of the time-windowed dissociation radial velocity distribution, which is measured using the temporal Fourier transform of the TRXS data aided by a Hough transform that extracts the slopes of linear features in an image. The relative strength of the two dissociation channels reflects both their branching ratio and differences in the spread of their dissociation times. Measuring the time-resolved dissociation radial velocity distribution aids the resolution of discrepancies between models for dissociation proposed by prior photoelectron spectroscopy work.
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معلومات مُعتمدة: S10 OD025079 United States OD NIH HHS
تواريخ الأحداث: Date Created: 20221101 Latest Revision: 20231029
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC9625835
DOI: 10.1063/5.0113079
PMID: 36319419
قاعدة البيانات: MEDLINE
الوصف
تدمد:1089-7690
DOI:10.1063/5.0113079