Femtosecond Time-resolved Spectroscopy of Organic Molecular Crystals PDF Download
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Author: Leah Ruby Williams
Publisher:
ISBN:
Category :
Languages : en
Pages : 278
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Author: Leah Ruby Williams
Publisher:
ISBN:
Category :
Languages : en
Pages : 278
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Author: Gary Phillip Wiederrecht
Publisher:
ISBN:
Category :
Languages : en
Pages : 243
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Author: Hiroaki Takahashi
Publisher: Springer Science & Business Media
ISBN: 3642847714
Category : Science
Languages : en
Pages : 343
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Book Description
The work contained in this volume is representative of the presentations made by the participants at the Fifth International Conference on Time-Resolved Vibra tional Spectroscopy, which was held at Waseda University, Tokyo, Japan, from June 3 to 7, 1991. The conference was the fifth in a biennial series initiated in 1982 by Prof. George H. Atkinson (University of Arizona) at Lake Placid, USA, and subsequently convened by Prof. Alfred Laubereau (University of Bayreuth, Germany) and Dr. Manfred Stockburger (Max-Planck Institut, G6ttingen, Ger many) at Bayreuth-BischofsgrUn, Germany, in 1985, by Prof. Joop D.W. Van Voorst (University of Amsterdam) at Amersfoort, The Netherlands, in 1987, and by Prof. Thomas G. Spiro (princeton University) at Princeton, USA, in 1989. The purpose of the conference is to bring together researchers from various disciplines and provide a forum for discussion of the latest advances in time resolved spectroscopies concerned with transient vibrational phenomena and their application to fundamental scientific and engineering studies. The 167 registered participants, including 46 students, from 14 different countries, represented a wide range of scientific disciplines, and clearly indicated that the field continues to expand into new areas of physics, chemistry, biology, and materials science. Their enthusiasm and the originality and quality of the contributions presented produced a very successful and enjoyable conference.
Author: Claude Phipps
Publisher: Springer Science & Business Media
ISBN: 0387304525
Category : Science
Languages : en
Pages : 598
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Book Description
Laser ablation describes the interaction of intense optical fields with matter, in which atoms are selectively driven off by thermal or nonthermal mechanisms. The field of laser ablation physics is advancing so rapidly that its principal results are seen only in specialized journals and conferences. This is the first book that combines the most recent results in this rapidly advancing field with authoritative treatment of laser ablation and its applications, including the physics of high-power laser-matter interaction. Many practical applications exist, ranging from inertial confinement fusion to propulsion of aerostats for pollution monitoring to laser ignition of hypersonic engines to laser cleaning nanoscale contaminants in high-volume computer hard drive manufacture to direct observation of the electronic or dissociative states in atoms and molecules, to studying the properties of materials during 200kbar shocks developed in 200fs. Selecting topics which are representative of such a broad field is difficult. Laser Ablation and its Applications emphasizes the wide range of these topics rather than - as is so often the case in advanced science – focusing on one specialty or discipline. The book is divided into four sections: theory and modeling, ultrafast interactions, material processing and laser-matter interaction in novel regimes. The latter range from MALDI to ICF, SNOM’s and femtosecond nanosurgery to laser space propulsion. The book arose from the SPIE series of High Power Laser Ablation Symposia which began in 1998. It is intended for a graduate course in laser interactions with plasmas and materials, but it should be accessible to anyone with a graduate degree in physics or engineering. It is also intended as a major reference work to familiarize scientists just entering the field with laser ablation and its applications.
Author: Masami Sakamoto
Publisher: Springer Nature
ISBN: 9811550859
Category : Science
Languages : en
Pages : 532
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Book Description
This book summarizes and records the recent notable advances in diverse topics in organic crystal chemistry, which has made substantial progress along with the rapid development of a variety of analysis and measurement techniques for solid organic materials. This review book is one of the volumes that are published periodically on this theme. The previous volume, published in 2015, systematically summarized the remarkable progress in assorted topics of organic crystal chemistry using organic solids and organic–inorganic hybrid materials during the previous 5 years, and it has been widely read. The present volume also shows the progress of organic solid chemistry in the last 5 years, with contributions mainly by invited members of the Division of Organic Crystal Chemistry of the Chemical Society of Japan (CSJ), together with prominent invited authors from countries other than Japan.
Author: W. L. Peticolas
Publisher:
ISBN: 9780871141767
Category : Science
Languages : en
Pages : 830
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Author: Pawel L. Urban
Publisher: John Wiley & Sons
ISBN: 1118887344
Category : Science
Languages : en
Pages : 376
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Book Description
Time is an important factor in physical and natural sciences. It characterizes the progress of chemical and biochemical processes. Mass spectrometry provides the means to study molecular structures by detecting gas-phase ions with the unique mass-to-charge ratios. Time-resolved mass spectrometry (TRMS) allows one to differentiate between chemical states that can be observed sequentially at different time points. Real-time mass spectrometric monitoring enables recording data continuously with a specified temporal resolution. The TRMS approaches – introduced during the past few decades – have shown temporal resolutions ranging from hours down to microseconds and beyond. This text covers the key aspects of TRMS. It introduces ion sources, mass analyzers, and interfaces utilized in time-resolved measurements; discusses the influence of data acquisition and treatment; finally, it reviews most prominent applications of TRMS – in the studies of reaction kinetics and mechanism, physicochemical phenomena, protein structure dynamics, biocatalysis, and metabolic profiling. It will assist science and engineering students to gain a basic understanding of the TRMS concept, and to recognize its usefulness. In addition, it may benefit scientists who conduct molecular studies in the areas of chemistry, physics and biology.
Author:
Publisher: Cuvillier Verlag
ISBN: 3736906021
Category : Science
Languages : de
Pages : 144
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Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1058
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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The first part of this thesis is devoted to ultrafast relaxation processes in quasi-one-dimensional organic molecular crystals. Crystalline samples of the perylene derivative MePTCDI are employed as a model system. Processes concerning the excitonic and phononic relaxation are investigated in time domain using various experimental techniques of optical ultrafast spectroscopy. The experimental setups attain a time-resolution of 20 femtoseconds. Free excitons at wavevector k=0 are formed in a molecular crystal by optical excitation of the lowest electronic transitions. Thereby, various intramolecular and intermolecular vibrational degrees of freedom are excited simultaneously. The excitation by fs-laser pulses results in the composition of coherent vibrational wave packets. Both, higher-energetic oscillations caused by intramolecular vibrations (internal phonons) and, for the first time in a quasi-one-dimensional organic system, lower-energetic modulations which are related to coherent lattice phonons (external phonons) are observed. The coherence of both types of phonons in the electronic ground state is damped at room temperature within a few ps. Besides phononic coherence, optical excitation by fs-laser pulses additionally induces electronic coherence of the optical transitions. The electronic coherence decays with the dephasing time T2. In spite of the high time-resolution, finally it was not possible to time resolve the dephasing of the lowest excitonic transition - however, we can estimated it to be in the range of 17fs
