Titlebook: Ultrafast Phenomena in Molecular Sciences; Femtosecond Physics Rebeca Nalda,Luis Ba?ares Book 2014 Springer International Publishing Switz

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Time-Resolved Photoelectron Spectroscopy for Excited State Dynamics,It begins with a brief introduction to the basics of nonadiabatic dynamics in polyatomic molecules. This is followed by a description of the principles behind TRPES and a discussion of the roles of the ionisation continuum. We then describe the experimental toolkit, from light and molecule sources t

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Biomolecules, Photostability and ,,, States: Linking These with Femtochemistry,ecently targeted understanding why key DNA bases, amino acids and their corresponding chromophore subunits, exhibit a resistance to photochemical damage (photostability) following ultraviolet radiation absorption. The research considered in this chapter focuses on the role of dissociative ... states

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Ultrafast Laser-Induced Processes Described by Ab Initio Molecular Dynamics,dom and all types of couplings. We are concerned with methods that treat the electronic motion quantum-mechanically, by expanding the electronic wave function in a relatively small basis of eigenstates of the Hamiltonian, and the nuclear motion classically, as an ensemble of trajectories each unfold

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Ultrafast Ionization and Fragmentation: From Small Molecules to Proteomic Analysis,ular proteome can vary as a function of time or in response to stimuli. Beyond amino acid sequence, protein function depends on chemical modifications known as post-translational modifications (PTMs) that serve as “switches” and “signals” that activate or inhibit vital functions. Despite advances in

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On the Investigation of Excited State Dynamics with (Pump-)Degenerate Four Wave Mixing,echniques. In this chapter, we show how third- and fifth-order techniques using sub-20?fs pulses can be applied to address coherence and population dynamics in the excited states of biomolecules. In particular, broadband four wave mixing is combined with an initial pump pulse to promote population t

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Surface-Aligned Femtochemistry: Molecular Reaction Dynamics on Oxide Surfaces, A combination of an optical pump-probe configuration with time-of-flight mass spectrometry is employed to monitor the mass and the relative velocity of intermediates and products of a photoinduced surface reaction in real time. Starting from a well defined reactant adsorption geometry representing

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Optical Diagnostics with Ultrafast and Strong Field Raman Techniques,tokes Spectroscopy (fs-CARS). We will demonstrate their ability to be used as non-invasive optical diagnostic tools for temperature, density, or concentration measurements, as well as a means of testing collision induced energy transfer models (in a low field regime), and studying the so-called inho

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Book 2014r systems, from the simplest H2 molecule to polymers or biological macromolecules, constitute central objects of interest for Physics, Chemistry and Biology, and despite the broad range of phenomena that they exhibit, they share some common behaviors. One of the most significant of those is that man

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