气候变化领域集成服务门户(CCPortal): Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source

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DOI	10.1126/science.aah6114
	Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source
	Pertot Y.; Schmidt C.; Matthews M.; Chauvet A.; Huppert M.; Svoboda V.; Von Conta A.; Tehlar A.; Baykusheva D.; Wolf J.-P.; Wörner H.J.
发表日期	2017
ISSN	0036-8075
起始页码	264
结束页码	267
卷号	355 期号:6322
英文摘要	Time-resolved x-ray absorption spectroscopy (TR-XAS) has so far practically been limited to large-scale facilities, to subpicosecond temporal resolution, and to the condensed phase. We report the realization of TR-XAS with a temporal resolution in the low femtosecond range by developing a tabletop high-harmonic source reaching up to 350 electron volts, thus partially covering the spectral region of 280 to 530 electron volts, where water is transmissive. We used this source to follow previously unexamined light-induced chemical reactions in the lowest electronic states of isolated CF4 + and SF6 + molecules in the gas phase. By probing element-specific core-to-valence transitions at the carbon K-edge or the sulfur L-edges, we characterized their reaction paths and observed the effect of symmetry breaking through the splitting of absorption bands and Rydberg-valence mixing induced by the geometry changes. © 2017, American Association for the Advancement of Science. All rights reserved.
英文关键词	carbon; sulfur; water; chemical reaction; condensate; electrical method; geometry; harmonic analysis; photochemistry; temporal analysis; X-ray spectroscopy; absorption; Article; chemical reaction; electron; ionization; photon; priority journal; synchrotron; ultraviolet radiation; X ray absorption spectroscopy
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245064
作者单位	Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, 8092, Switzerland; GAP-Biophotonics, Université de Genève, Geneva, 1205, Switzerland; Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, United Kingdom
推荐引用方式 GB/T 7714	Pertot Y.,Schmidt C.,Matthews M.,et al. Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source[J],2017,355(6322).
APA	Pertot Y..,Schmidt C..,Matthews M..,Chauvet A..,Huppert M..,...&Wörner H.J..(2017).Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source.Science,355(6322).
MLA	Pertot Y.,et al."Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source".Science 355.6322(2017).