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Femtosecond Clocking of the Chemical Bond

Rosker, Mark J. and Dantus, Marcos and Zewail, Ahmed H. (1988) Femtosecond Clocking of the Chemical Bond. Science, 241 (4870). pp. 1200-1202. ISSN 0036-8075. doi:10.1126/science.241.4870.1200.

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When a chemical bond is broken in a direct dissociation reaction, the process is so rapid that it has generally been considered instantaneous and thus unmeasurable. However, the bond does persist for times on the order of 10^(-13) seconds after the photon has been absorbed. Femtosecond (10^(-15) second) laser techniques can be used to directly clock this process, which describes the dynamics of the chemical bond. The time required to break the chemical bond in an elementary reaction has been measured and the characteristic repulsion length for the potential governing fragment separation has been obtained.

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Additional Information:© 1998 American Association for the Advancement of Science. Received 6 June 1988; accepted 6 July 1988. We thank R. Zare, R. Dixon, J. Simons, and K. Wilson for very enlightening discussions. Supported by the AFOSR grant 87-0071. A.H.Z. is a John Simon Guggenheim Foundation Fellowship.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)87-0071
John Simon Guggenheim FoundationUNSPECIFIED
Issue or Number:4870
Record Number:CaltechAUTHORS:20141222-152314297
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Official Citation:Femtosecond Clocking of the Chemical Bond MARK J. ROSKER, MARCOS DANTUS, and AHMED H. ZEWAIL Science 2 September 1988: 241 (4870), 1200-1202. [DOI:10.1126/science.241.4870.1200]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53118
Deposited By: Tony Diaz
Deposited On:23 Dec 2014 17:07
Last Modified:10 Nov 2021 19:48

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