Ultrafast Core-Hole-Induced Dynamics in Water Probed by X-Ray Emission Spectroscopy

Journal Article · Fri Jun 10 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.94.227401· OSTI ID:20696364

Odelius, Michael; Nordlund, Dennis; Pettersson, Lars G.M. ^[1]; Ogasawara, Hirohito ^[2]; Fuchs, Oliver; Weinhardt, Lothar; Maier, Florian; Umbach, Eberhard ^[3]; Heske, Clemens ^[4]; Zubavichus, Yan; Grunze, Michael ^[5]; Denlinger, Jonathan D ^[6]; Nilsson, Anders ^[1]

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1. FYSIKUM, Stockholm University, Albanova, S-106 91 Stockholm (Sweden)
2. Stanford Synchrotron Radiation Laboratory, Post Office Box 20450, Stanford, California 94309 (United States)
3. Experimentelle Physik II, Universitaet Wuerzburg, Am Hubland, 97074 Wuerzburg (Germany)
4. Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003 (United States)
5. Angewandte Physikalische Chemie, Universitaet Heidelberg, INF 253, 69120 Heidelberg (Germany)
6. Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (United States)

The isotope effect and excitation-energy dependence have been measured in the oxygen K-edge x-ray emission spectrum (XES). The use of XES to monitor core decay processes provides information about molecular dynamics (MD) on an ultrafast time scale through the O1s lifetime of a few femtoseconds. Different nuclear masses give rise to differences in the dynamics and the observed isotope effect in XES is direct evidence of the importance of such processes. MD simulations show that even the excitation-energy dependence in the XES is mainly related to differences in core-excited-state dynamics.

• OSTI ID: 20696364
• Journal Information: Physical Review Letters, Vol. 94, Issue 22; Other Information: DOI: 10.1103/PhysRevLett.94.227401; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EMISSION SPECTRA
EMISSION SPECTROSCOPY
ENERGY DEPENDENCE
EXCITATION
EXCITED STATES
ISOTOPE EFFECTS
LIFETIME
MASS
MOLECULAR DYNAMICS METHOD
OXYGEN
SIMULATION
WATER
X-RAY SPECTRA