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Atom specific view of chemical reaction at surfaces/interfaces “Need a pump pulse”

Atom specific view of chemical reaction at surfaces/interfaces “Need a pump pulse”. Laser-ablation sample damage >> x-ray induced damage. Laser induced temperature jump 1. fs -optical laser pump 2. < 1ps electronic excitation 3. > 1ps phononic excitation 4. Molecules do chemistry.

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Atom specific view of chemical reaction at surfaces/interfaces “Need a pump pulse”

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  1. Atom specific view of chemical reaction at surfaces/interfaces“Need a pump pulse” Laser-ablation sample damage >> x-ray induced damage Laser induced temperature jump 1. fs-optical laser pump 2. <1ps electronic excitation 3. >1ps phononicexcitation 4. Molecules do chemistry Can we resonantly excite the molecular motion on the surface? Frustrated rotation/translation energy ~10 THz LCLS e-beam can produce THz! "Single-cycle terahertz pulses with >0.2 V/Å field amplitudes via coherent transition radiation", D. Daranciang, J. Goodfellow, M. Fuchs, H. Wen, S. Ghimire, D.A. Reis, H. Loos, A.S. Fisher, and A.M. Lindenberg, Appl. Phys. Lett.99, 141117 (2011) Can we use strong THz field (>0.2 V/Å) to control the molecular motion on the surface? manipulation by THz sliding pulling pushing

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