Multiple-Photon Excitation and Dissociation of Polyatomic Molecules

Multiple-Photon Excitation and Dissociation of Polyatomic Molecules PDF Author: Cyrus D. Cantrell
Publisher: Springer Science & Business Media
ISBN: 3642822924
Category : Science
Languages : en
Pages : 300

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Book Description
In the early 1970s, researchers in Canada, the Soviet Union and the United States discovered that powerful infrared laser pulses are capable of dissociating mole cules such as SiF4 and SF6' This result, which was so unexpected that for some time the phenomenon of multiple-photon dissociation was not recognized in many cir cumstances in which we now know that it occurs, was first publicized at a time when the possibility of using lasers for the separation of isotopes had attracted much attention in the scientific community. From the mid-1970s to the early 1980s, hun dreds of experimental papers were published describing the multiple-photon absorp tion of C02 laser pulses in nearly every simple molecule with an absorption band in the 9 - 11 jJm region. Despite this impressive volume of experimental results, and despite the efforts of numerous theorists, there is no agreement among re searchers in the field on many fundamental aspects of the absorption of infrared laser light by polyatomic molecules. This book is devoted to reviells of the experimental and theoretical research that provides the foundations for our current understanding of molecular multiple photon exc itat i on, and to rev i ews of research that is pert i nent to the 1 aser sep aration of isotopes.

Multiple-Photon Excitation and Dissociation of Polyatomic Molecules

Multiple-Photon Excitation and Dissociation of Polyatomic Molecules PDF Author: Cyrus D. Cantrell
Publisher: Springer Science & Business Media
ISBN: 3642822924
Category : Science
Languages : en
Pages : 300

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Book Description
In the early 1970s, researchers in Canada, the Soviet Union and the United States discovered that powerful infrared laser pulses are capable of dissociating mole cules such as SiF4 and SF6' This result, which was so unexpected that for some time the phenomenon of multiple-photon dissociation was not recognized in many cir cumstances in which we now know that it occurs, was first publicized at a time when the possibility of using lasers for the separation of isotopes had attracted much attention in the scientific community. From the mid-1970s to the early 1980s, hun dreds of experimental papers were published describing the multiple-photon absorp tion of C02 laser pulses in nearly every simple molecule with an absorption band in the 9 - 11 jJm region. Despite this impressive volume of experimental results, and despite the efforts of numerous theorists, there is no agreement among re searchers in the field on many fundamental aspects of the absorption of infrared laser light by polyatomic molecules. This book is devoted to reviells of the experimental and theoretical research that provides the foundations for our current understanding of molecular multiple photon exc itat i on, and to rev i ews of research that is pert i nent to the 1 aser sep aration of isotopes.

Multiphoton Dissociation of Polyatomic Molecules

Multiphoton Dissociation of Polyatomic Molecules PDF Author: Peter A. Schulz
Publisher:
ISBN:
Category :
Languages : en
Pages : 288

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Book Description


Laser Stimulated Scattering and Multiphoton Excitation

Laser Stimulated Scattering and Multiphoton Excitation PDF Author: Guang S. He
Publisher: Oxford University Press
ISBN: 0192649523
Category : Science
Languages : en
Pages : 640

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Book Description
Laser Stimulated Scattering and Multiphoton Excitation is the first book to comprehensively cover quantum electrodynamic theory of stimulated scattering and multiphoton excitation processes, as well as various stimulated scattering effects. These include stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS), as well as more recent advances in the field such as stimulated Kerr scattering (SKS), stimulated Rayleigh-Bragg scattering (SRBS) and stimulated Mie scattering (SMS). The book goes on to discuss multiphoton excitation-based nonlinear optical effects, photoelectric effects, atomic and molecular ionization effects, and molecular dissociation effects. Each chapter includes a description of the key concepts and mechanisms alongside the necessary theoretical formulations, as well as engaging with the latest experimental research achievements and the scientific and technological applications. Laser Stimulated Scattering and Multiphoton Excitation is essential reading for academics, research scientists, and students working or interested in the areas of nonlinear optics, nonlinear photonics, laser spectroscopy, physical optics, physical chemistry, and optoelectronic engineering.

Dynamics of the Excited State

Dynamics of the Excited State PDF Author: K. P. Lawley
Publisher: John Wiley & Sons
ISBN: 0470143177
Category : Science
Languages : en
Pages : 676

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Book Description
The Advances in Chemical Physics series provides the chemical physics and physical chemistry fields with a forum for critical, authoritative evaluations of advances in every area of the discipline. Filled with cutting-edge research reported in a cohesive manner not found elsewhere in the literature, each volume of the Advances in Chemical Physics series serves as the perfect supplement to any advanced graduate class devoted to the study of chemical physics.

Directions In Chaos - Volume 1

Directions In Chaos - Volume 1 PDF Author: Bailin Hao
Publisher: World Scientific
ISBN: 9814513717
Category : Science
Languages : en
Pages : 367

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Book Description
This volume, the first of a two-volume book, consists of a collection of comprehensive reviews and lectures written by active researchers on topics in chaotic phenomena.

Nonlinear Laser Chemistry

Nonlinear Laser Chemistry PDF Author: V. S. Letokhov
Publisher: Springer Science & Business Media
ISBN: 3642876463
Category : Science
Languages : en
Pages : 430

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Book Description
Prefaces are usually written when a manuscript is finished. Having finished this book I can clearly see many shortcomings in it. But if I began to eliminate them I would probably write quite a different book in another two years; indeed, this has already happened once. In 1979, when I finished the first version of this book, it was much broader in scope and was to be titled "Laser Photochemistry." Corrections and additions to that unpublished manuscript gave rise to the present book with its revised title and more specific subject matter. I resolved to have it published in exactly this form, despite the fact that it concerns a dynamically developing field of research and will soon make way for other works. This book contains the basic ideas and results I have been developing with my colleagues, friends and students at the Institute of Spectroscopy, USSR Academy of Sciences, in the town of Troitsk since 1970. It deals with the interaction of light with atoms and molecules via multiple-phonon inter action. Nonlinear processes in the resonant interaction are used to illustrate the physical mechanisms involved and to indicate how these processes have led to modern applications such as isotope separation, detection of single atoms and molecules, and chemical and biochemical synthesis.

Gas-Phase IR Spectroscopy and Structure of Biological Molecules

Gas-Phase IR Spectroscopy and Structure of Biological Molecules PDF Author: Anouk M. Rijs
Publisher: Springer
ISBN: 3319192043
Category : Science
Languages : en
Pages : 409

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Book Description
The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.

Theoretical Aspects of Laser Radiation and Its Interaction with Atomic and Molecular Systems

Theoretical Aspects of Laser Radiation and Its Interaction with Atomic and Molecular Systems PDF Author:
Publisher:
ISBN:
Category : Laser beams
Languages : en
Pages : 64

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Book Description


Laser-Induced Chemical Processes

Laser-Induced Chemical Processes PDF Author: Jeffrey I. Steinfeld
Publisher: Springer Science & Business Media
ISBN: 1468438638
Category : Technology & Engineering
Languages : en
Pages : 283

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Book Description
The possibility of initiating chemical reactions by high-intensity laser exci tation has captured the imagination of chemists and physicists as well as of industrial scientists and the scientifically informed public in general ever since the laser first became available. Initially, great hopes were held that laser-induced chemistry would revolutionize synthetic chemistry, making possible "bond-specific" or "mode-specific" reactions that were impos sible to achieve under thermal equilibrium conditions. Indeed, some of the early work in this area, typically employing high-power continuous-wave sources, was interpreted in just this way. With further investigation, however, a more conservative picture has emerged, with the laser taking its place as one of a number of available methods for initiation of high-energy chemical transformations. Unlike a number of these methods, such as flash photolysis, shock tubes, and electron-beam radiolysis, the laser is capable of a high degree of spatial and molecular localization of deposited energy, which in turn is reflected in such applications as isotope enrichment or localized surface treatments. The use of lasers to initiate chemical processes has led to the discovery of several distinctly new molecular phenomena, foremost among which is that of multiple-photon excitation and dissociation of polyatomic molecules. This research area has received the greatest attention thus far and forms the focus of the present volume.

Lasers and Chemical Change

Lasers and Chemical Change PDF Author: A. Ben-Shaul
Publisher: Springer Science & Business Media
ISBN: 3642678262
Category : Science
Languages : en
Pages : 511

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Book Description
Lasers and chemical change is the study of radiation and molecules in dis equilibrium. The distinguishing feature of such systems is the extreme de parture from thermal equilibrium: the radiation is usually confined to a narrow frequency range, is well coll imated, and is far brighter than black body radiation; the chemical composition and also the distribution of mole cules over their different energy states are often markedly displaced from that expected at equilibrium. Such systems can be used as a source of laser radiation and, reversedly, lasers can rapidly and selectively displace mole cular systems from equilibrium. The subsequent evolution of the initially prepared state can then be monitored - again using lasers. One purpose of this book is to introduce the concepts required to d- cuss systems of radiation and molecules in disequilibrium. These include the physics of (laser) radiation and of radiation-matter interaction and molecular structure and spectroscopy. Excellent textbooks of these topics are available and our survey (in Chap. 3) is only intended to accent the es sential points, with special reference to atomic and molecular radiation physics. Considerably more attention is given to the topic of disequilibrium in chemical systems (Chap. 2). In particular we consider both inter- and intra molecular dynamics with special reference to energy requirements and energy disposal in chemical reactions and to what goes on in between - intramole cular energy migration.