Femtosecond Reaction Dynamics in the Gas Phase PDF Download
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Author: Una Marvet
Publisher:
ISBN:
Category : Chemical reaction, Conditions and laws of
Languages : en
Pages : 354
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Book Description
Author: Una Marvet
Publisher:
ISBN:
Category : Chemical reaction, Conditions and laws of
Languages : en
Pages : 354
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Book Description
Author: Abraham Vamattathil Scaria
Publisher:
ISBN:
Category :
Languages : en
Pages : 112
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Book Description
Ultrafast spectroscopy is one of the most active areas of research in chemical physics. Understanding the ultrafast behavior of molecules, and influencing it with the help of laser fields may lead to the ultimate goal of controlling the flow and outcome of chemical reactions. This thesis work focuses on the investigation and control of molecular dynamics using time-resolved four-wave mixing (FWM) techniques in gas phase samples. Femtosecond FWM spectroscopy has established itself as a powerful tool to uncover molecular dynamics on ultrafast time scales. The femtosecond time resolution combined with a background-free, highly collimated coherent signal makes the approach unique for studying the dynamics especially under conditions of low concentrations. In gas phase, the elementary reaction paths can be directly probed without the interference of solvent molecules. A comparative study of the molecular dynamics in the gas phase and condensed phase gives a detailed picture on the effect of environment. Utilization of Raman as well as optical resonances in FWM spectroscopy provided high selectivity with respect to the type of molecular dynamics observed in the transient signal. New schemes of FWM spectroscopy, which employs an initial pump pulse along with a fully time resolved FWM process, were devised to monitor also the dynamics of higher lying excited states. A feed back controlled optimization process in a FWM scheme is used to selectively excite or suppress vibrational modes in gas phase and liquid phase of the same molecule. The results of the experiments performed using different FWM techniques to monitor, understand, and also to control diverse aspects of molecular dynamics in different systems are presented and discussed.
Author: Douwe A. Wiersma
Publisher: North Holland
ISBN:
Category : Science
Languages : en
Pages : 324
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Book Description
Presents the state-of-the-art, both from a theoretical and experimental point of view, in the field of femtochemistry. The book contains in-depth coverage of femtosecond gasphase reaction dynamics, coherent and coherence effects in solution, and coherent control of chemical reactions.
Author: Emily J. S. Brown
Publisher:
ISBN:
Category : Anisotropy
Languages : en
Pages : 680
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Book Description
Author: Ahmed Zewail
Publisher: Elsevier
ISBN: 008092669X
Category : Science
Languages : en
Pages : 333
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Book Description
This inspired book by some of the most influential scientists of our time--including six Nobel laureates--chronicles our emerging understanding of the chemical bond through the last nine decades and into the future. From Pauling's early structural work using x-ray and electron diffraction to Zewail's femtosecond lasers that probe molecular dynamics in real time; from Crick's molecular biology to Rich's molecular recognition, this book explores a rich tradition of scientific heritage and accomplishment. The perspectives given by Pauling, Perutz, Rich, Crick, Porter, Polanyi, Herschbach, Zewail, and Bernstein celebrate major scientific achievements in chemistry and biology with the chemical bond playing a fundamental role. In a unique presentation that also provides some lively insights into the very nature of scientific thought and discovery, The Chemical Bond: Structure and Dynamics will be of general interest to scientists, science historians, and the scientifically inclined populous.
Author: Abderrazzak Douhal
Publisher: World Scientific
ISBN: 9810248660
Category : Science
Languages : en
Pages : 854
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Book Description
This book contains important contributions from top international scientists on the-state-of-the-art of femtochemistry and femtobiology at the beginning of the new millennium. It consists of reviews and papers on ultrafast dynamics in molecular science.The coverage of topics highlights several important features of molecular science from the viewpoint of structure (space domain) and dynamics (time domain). First of all, the book presents the latest developments, such as experimental techniques for understanding ultrafast processes in gas, condensed and complex systems, including biological molecules, surfaces and nanostructures. At the same time it stresses the different ways to control the rates and pathways of reactive events in chemistry and biology. Particular emphasis is given to biological processes as an area where femtodynamics is becoming very useful for resolving the structural dynamics from techniques such as electron diffraction, and X-ray and IR spectroscopy. Finally, the latest developments in quantum control (in both theory and experiment) and the experimental pulse-shaping techniques are described.
Author: V.N. Kondratiev
Publisher: Springer Science & Business Media
ISBN: 3642676081
Category : Science
Languages : en
Pages : 254
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Book Description
The present monograph appears after the death of Professor V. N. Kondratiev, one of those scientists who have greatly contributed to the foundation of contem porary gas kinetics. The most fundamental idea of chemical kinetics, put for ward at the beginning of the twentieth century and connected with names such as W. Nernst, M. Bodenstein, N. N. Semenov, and C. N. Hinshelwood, was that the complex chemical reactions are in fact a manifestation of a set of simpler elementary reactions involving but a small number of species. V. N. Kondratiev was one of the first to adopt this idea and to start investigations on the elementary chemical reactions proper. These investigations revealed explicitly that every elementary reaction in turn consisted of many elementary events usually referred to as elementary processes. It took some time to realize that an elementary reaction, represented in a very simple way by a macroscopic kinetic equation, can be described on a microscopic level by a generalized Boltzmann equation. Neverheless, up to the middle of the twentieth century, gas kinetics was mainly concerned with the interpretation of complex chemical reactions via a set of elementary reactions. But later on, the situation changed drastically. First, the conditions for reducing microscopic cquations to macroscopic ones were clearly set up. These are essentially based on the fact that the small perturbations of the Maxwell-Boltzmann distribution are caused by the reaction proper.
Author: Niklas Gador
Publisher:
ISBN: 9789172833050
Category :
Languages : en
Pages : 42
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Book Description
Author: Joel M. Bowman
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Book Description
