Fragmentation Dynamics Of Molecular Ions
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Fragmentation Dynamics of Molecular Ions
Author: Rajesh Kumar Kushawaha
language: en
Publisher: LAP Lambert Academic Publishing
Release Date: 2011-02
This book is concerns the study of fragmentation dynamics of molecular ions created by high energy electron impact on neutral molecules. We pay particular attention to the rare process of associative fragmentation, i.e. the formation of a bond between atoms that are separated in the neutral molecule, but get associated during the evolution of the neutral molecule into an unstable molecular ion. Various aspects of associative reactions in fragmentation dynamics of polyatomic molecular ion is discussed in details. Some theoretical model and computational work for explaining the Coulomb effect on the trajectory of ionic fragments had been described in details.
Many-Particle Quantum Dynamics in Atomic and Molecular Fragmentation
Author: Joachim Ullrich
language: en
Publisher: Springer Science & Business Media
Release Date: 2013-06-29
This book aims to give a comprehensive view on the present status of a tremendously fast-developing field - the quantum dynamics of fragmenting many-particle Coulomb systems. In striking contrast to the profound theo retical knowledge, achieved from extremely precise experimental results on the static atomic and molecular structure, it was only three years ago when the three-body fundamental dynamical problem of breaking up the hydro gen atom by electron impact was claimed to be solved in a mathematically consistent way. Until now, more "complicated", though still fundamental scenarios, ad dressing the complete fragmentation of the "simplest" many-electron system, the helium atom, under the action of a time-dependent external force, have withstood any consistent theoretical description. Exceptions are the most "trivial" situations where the breakup is induced by the impact of a single real photon or of a virtual photon under a perturbation caused by fast, low charged particle impact. Similarly, the dissociation of the "simplest" molecu lar systems like Ht or HD+, fragmentating in collisions with slow electrons, or the H3 molecule breaking apart into two or three" pieces" as a result of a single laser-photon excitation, establish a major challenge for state-of-the-art theoretical approaches.
Chemical Applications of Synchrotron Radiation: Dynamics and VUV spectroscopy
Annotation. This book is organized into two parts, in order of increasing photon energy. Part I deals with the applications of low energy photons and covers areas such as gas phase photodissociation reactions and dynamics, soft X-ray fluorescence, IR and photoemission analysis of surfaces, spectroscopy of organic and polymeric materials, catalysts, electronic and magnetic materials, and spectromicroscopy. Part II encompasses applications using soft to hard X-rays, including spectroscopy of surface and thin films, XAFS, diffraction and scattering, and several technological applications, namely the microprobe, photoetching and tribology.