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Photoexcitation of gas-phase CS2 with a 200\u00a0nm laser pulse launches oscillatory bending and stretching motion, leading to dissociation of atomic sulfur in under a picosecond. During the first 300\u00a0fs following excitation, we observe significant changes in the vibrational frequency as well as some dissociation of the C\u2013S bond, leading to atomic sulfur in the both 1D and 3P states. Beyond 1400\u00a0fs, the dissociation is consistent with primarily 3P 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.<\/jats:p>","DOI":"10.1063\/5.0113079","type":"journal-article","created":{"date-parts":[[2022,10,4]],"date-time":"2022-10-04T14:05:10Z","timestamp":1664892310000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":24,"title":["Transient vibration and product formation of photoexcited CS2 measured by time-resolved x-ray scattering"],"prefix":"10.1063","volume":"157","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6782-6566","authenticated-orcid":false,"given":"Ian","family":"Gabalski","sequence":"first","affiliation":[{"name":"Stanford PULSE Institute, SLAC National Accelerator Laboratory 1 , Menlo Park, California 94025, USA"},{"name":"Department of Applied Physics, Stanford University 2 , Stanford, California 94305, 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