Phys. Rev. Lett. 87, 025501 (2001) [4 pages]

Direct Observation of Surface Chemistry Using Ultrafast Soft-X-Ray Pulses

Abstract

References

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M. Bauer^1,*, C. Lei¹, K. Read^1,†, R. Tobey¹, J. Gland², M. M. Murnane¹, and H. C. Kapteyn^1,‡
¹JILA, University of Colorado, Boulder, Colorado 80309-0440
²Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109

Received 16 November 2000; published 22 June 2001

See accompanying Physics Focus

We present the first demonstration of the use of ultrafast extreme-ultraviolet pulses to directly monitor a surface chemical reaction on femtosecond time scales. By adsorbing molecular oxygen onto a platinum surface and exciting it with an ultrafast laser pulse, changes in the oxygen-platinum chemical bond on a subpicosecond time scale were observed through changes in the photoelectron spectra. This work demonstrates a powerful new technique for studying reactions of interest in catalysis and for probing changes of local order on surfaces on their fundamental time scales.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.87.025501

DOI:

10.1103/PhysRevLett.87.025501

PACS:

82.53.St, 79.60.Dp

^*Current address: Fachbereich Physik, University Kaiserslautern, 67663 Kaiserslautern, Germany.

^†Current address: Kapteyn-Murnane Laboratories LLC, Boulder, CO 80302.

^‡Email address: kapteyn@jila.colorado.edu

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Phys. Rev. Lett. 87, 025501 (2001) [4 pages]

Direct Observation of Surface Chemistry Using Ultrafast Soft-X-Ray Pulses