Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Dissociation Dynamics Of Transient Molecules Studied By Photoelectron Photofragment Coincidence Spectroscopy
Download Dissociation Dynamics Of Transient Molecules Studied By Photoelectron Photofragment Coincidence Spectroscopy full books in PDF, epub, and Kindle. Read online Dissociation Dynamics Of Transient Molecules Studied By Photoelectron Photofragment Coincidence Spectroscopy ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Dissociation Dynamics of Transient Molecules Studied by Photoelectron-Photofragment Coincidence Spectroscopy by : Amelia Wolpert Ray
Download or read book Dissociation Dynamics of Transient Molecules Studied by Photoelectron-Photofragment Coincidence Spectroscopy written by Amelia Wolpert Ray and published by . This book was released on 2016 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the simplest carboxyl free radical the formyloxyl radical, HCO2, serves as a prototype for more complex carboxyl free radicals such as CH3CO2, C6H5CO2 and HC2CO2. It is also an intermediate in the OH + CO [right arrow] H + CO2 reaction, of increasing interest for both atmospheric and combustion chemistry. The predissociation dynamics for the DCO2− + hv [right arrow] D + CO2 + e− reaction were studied by DPD of DCO2−. Photodetachment near threshold (hv = 4.27 eV) accesses all three of the lowest-lying electronic states (2B2, 2A1, and 2A2) of the formyloxyl radical. The photoelectron spectrum indicates vibrational excitation dominated by the O--C--O bending mode in the 2A1. In the PPC spectra for DCO2−, each vibrational state of the nascent neutral is coupled to bending excitation in the resulting CO2 product observed in the eKE-gated state-resolved translational energy distribution. Each CO2 product-state distribution exhibits a substantial level of bending excitation, more than predicted by recent quantum-dynamics calculations on an ab initio potential energy surface. Extending our work on carboxyl free radicals, the dissociation dynamics of the propiolyl radical, HCCCO2, and its related isomer CCCO2H were studied by DPD of their respective anions using PPC spectroscopy. At hv = 4.27 eV, the HCCCO2− anions is found to readily dissociate to HCC + CO2. Similar to the formyloxyl radical, dissociation to HCC + CO2 results in a series of resolved peaks in the translational energy release spectrum corresponding to the O--C--O bending mode in the CO2 fragment. The isomeric CCCO2H were not observed. High level ab initio calculations and Franck-Condon simulations were carried out to reproduce the stable photoelectron spectrum. Extending the recent work on the F + H2O benchmark F initiated hydrogen abstraction reaction, the effects of vibrational excitation of the precursor anion was explored. To carry out this experiment, an IR laser was coupled into the existing PPC spectrometer using a mirror on the existing neutral beam block. Excitation of the internal hydrogen bond F--H--OH of the anion causes a noticeable change in dissociation dynamics, increasing access to the HF + OH products. Finally, the effects of intramolecular vibrational relaxation of the excited anions was explored by looking at how the anions aged during confinement in the electrostatic ion beam trap. Finally, the F + HOCH3 [right arrow] HF + OCH3 reaction was studied; expanding our work on F initiated hydrogen abstraction reactions. The HF product is formed with considerable excitation while the OCH3 product behaves as a spectator to the reaction. Both the metastable reactant channel van der Waals complex and stable product hydrogen bonded complexes were observed, along with a series of long-lived metastable vibrational Feshbach resonances.
Book Synopsis Modelling the Dissociation Dynamics and Threshold Photoelectron Spectra of Small Halogenated Molecules by : Jonelle Harvey
Download or read book Modelling the Dissociation Dynamics and Threshold Photoelectron Spectra of Small Halogenated Molecules written by Jonelle Harvey and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jonelle Harvey's book outlines two related experimental techniques, threshold photoelectron spectroscopy and threshold photoelectron photoion coincidence techniques, which are utilised to investigate small halogenated molecules. All the experiments were conducted at the vacuum ultraviolet beamline of the Swiss Light Source, a synchrotron photon source, which has the advantage over popular laser photon-sources of extreme ease of tunability. Three studies are presented which combine experimental and computational ab initio approaches: studying the fast dissociations of halogenated methanes in order to construct a self-consistent thermochemical network; investigating the fragmentations of fluoroethenes from timebombs, which break apart very slowly but explosively, to fast dissociators; and uncovering how vital conical interactions underpin both the results of photoelectron spectra and dissociation patterns. The details included in this thesis are useful for researchers working in the same field and those readers wishing to obtain a solid introduction into the types of systems encountered in threshold photoelectron photoion coincidence spectroscopy.
Book Synopsis Dynamics of Gas-phase Transient Species Studied by Dissociative Photodetachment of Molecular Anions by : Zhou Lu
Download or read book Dynamics of Gas-phase Transient Species Studied by Dissociative Photodetachment of Molecular Anions written by Zhou Lu and published by . This book was released on 2007 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoionization And Photodetachment (In 2 Parts) by : Cheuk-yiu Ng
Download or read book Photoionization And Photodetachment (In 2 Parts) written by Cheuk-yiu Ng and published by World Scientific. This book was released on 2000-06-30 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Owing to the advances of vacuum ultraviolet and ultrafast lasers and third generation synchrotron sources, the research on photoionization, photoelectrons, and photodetachment has gained much vitality in recent years. These new light sources, together with ingenious experimental techniques, such as the coincidence imaging, molecular beam, pulsed field ionization photoelectron, mass-analyzed threshold ion, and pulsed field ion pair schemes, have allowed spectroscopic, dynamic, and energetic studies of gaseous species to a new level of detail and accuracy. Profitable applications of these methods to liquids are emerging.This invaluable two-volume review consists of twenty-two chapters, focusing on recent developments in photoionization and photodetachment studies of atoms; molecules, transient species, clusters, and liquids.
Book Synopsis Multi-body Dissociative Photodetachment Dynamics of Small Molecular and Cluster Anions by : Todd Glenn Clements
Download or read book Multi-body Dissociative Photodetachment Dynamics of Small Molecular and Cluster Anions written by Todd Glenn Clements and published by . This book was released on 2002 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoionization and Photodetachment by : Cheuk-Yiu Ng
Download or read book Photoionization and Photodetachment written by Cheuk-Yiu Ng and published by World Scientific. This book was released on 2000 with total page 1415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Owing to the advances of vacuum ultraviolet and ultrafast lasers and third generation synchrotron sources, the research on photoionization, photoelectrons, and photodetachment has gained much vitality in recent years. These new light sources, together with ingenious experimental techniques, such as the coincidence imaging, molecular beam, pulsed field ionization photoelectron, mass-analyzed threshold ion, and pulsed field ion pair schemes, have allowed spectroscopic, dynamic, and energetic studies of gaseous species to a new level of detail and accuracy. Profitable applications of these methods to liquids are emerging.This invaluable two-volume review consists of twenty-two chapters, focusing on recent developments in photoionization and photodetachment studies of atoms; molecules, transient species, clusters, and liquids.
Book Synopsis Molecular Physics by : Theodore Buyana
Download or read book Molecular Physics written by Theodore Buyana and published by World Scientific. This book was released on 1997 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines in one concise volume the diverse work of several similar books in the market. Each chapter is self-contained and designed to serve the needs of graduates and undergraduates in physics, biochemistry and chemistry. Numerous illustrations accompany the material and more than 60 problems in molecular physics are worked out. Tedious mathematics that obscures the essence of physics is avoided. Though mainly theoretical, many important experimental aspects are included and discussed. It aims at teaching, and not commenting on scientific knowledge. An essential compendium, it can be used both as a textbook and a reference.The main features covered include: Quantum-mechanical treatment of molecular physics; theoretical treatment of molecular spectra and experimental techniques in spectroscopy; interatomic interactions, potentials, molecular stability, energy levels, bonds, rotational and vibrational states, anharmonicity, polarization; theoretical consideration of real molecules. Resonance methods (NMR, NQR, EPR and ENDOR. Theory, experimental apparatus, techniques, numerical results, applications and utility thereof).
Book Synopsis Investigation of Reactive Oxides and Radical Dynamics by Photoelectron-Photofragment Coincidence Spectroscopy by : Katharine Lunny
Download or read book Investigation of Reactive Oxides and Radical Dynamics by Photoelectron-Photofragment Coincidence Spectroscopy written by Katharine Lunny and published by . This book was released on 2019 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon, hydrogen, oxygen, and nitrogen are the most common elements necessary for life and in combination create a multitude of molecules. These include highly reactive species with complicated electronic structures, such as oxygenated hydrocarbon radicals and nitrogen oxides. These short-lived species can be important in atmospheric and combustion processes, but difficult to characterize due to their transient nature. Photoelectron-photofragment coincidence spectroscopy is a technique designed to study short-lived species thought photodetachment of the corresponding stable anion and measure the energy partitioning within the neutral species. The oxyallyl anion was photodetached to the nearly degenerate states, 3B2 and 1A1 as well the 3B1 excited state, which were correlated to predominately stable C3H4O neutral. The photoelectron spectrum of the oxyallyl diradical and the acetone enolate radical, C3H5O, are the correct assignment for the C2O2 and HC2O2 photoelectron spectra reported in the literature. The oxyallyl diradical was observed to have a minor dissociation channel, at both Ehv= 3.20 eV and 1.60 eV. At Ehv = 3.20 eV, photodetachment to the 1A1 state is accessible, and results in dissociation to CO + C2H4. Dissociation was also observed from the triplet states, occurring after intersystem crossing. This system is further complicated by the observation of photodetachment ~0.3 eV below threshold. A stable neutral was the result of delayed photoemission during cyclization, as well as dissociative photodetachment resulting from a two photon process were observed. The complicated electronic structure of nitrogen oxides, N2O2 and NO3 exhibit photodissociation pathways due the several neutral dissociation channels accessible at Ehv = 3.20 eV. For N2O2, photodissociation resulted in vibrationally excited NO anions which undergoes autodetachment, as well as photodissociation of NO− ([nu]=0). Photodissociation was also observed to result in N2O + O− which undergoes sequential photodetachment. The peroxynitrite anion, a high energy isomer of the nitrate anion, was also observed to produce similar photodissociation pathways. Vibrationally excited NO− followed by autodetachment was observed, as well as the observation of sequential photodetachment of O2− via a two-photon process.
Book Synopsis Imaging in Chemical Dynamics by : Arthur G. Suits
Download or read book Imaging in Chemical Dynamics written by Arthur G. Suits and published by . This book was released on 2001 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the rapidly growing field of imaging-based probes of chemical dynamics. It includes discussions of state-resolved photodissociation dynamics, orbital alignment and vector correlations, radical photodissociation, surface scattering, imaging photoelectron spectroscopy, ultrafast dynamics and coincidence techniques.
Book Synopsis Vacuum Ultraviolet Photoionization and Photodissociation of Molecules and Clusters by : Cheuk-Yiu Ng
Download or read book Vacuum Ultraviolet Photoionization and Photodissociation of Molecules and Clusters written by Cheuk-Yiu Ng and published by World Scientific. This book was released on 1991 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph reviews the recent progress in vacuum ultraviolet (VUV) photoionization and photodissociation processes. Photoionization, photoelectron, and fluorescence spectroscopic techniques have played an important role in revealing the photoionization and photodissociation dynamics of molecules in the vacuum ultraviolet region and in providing accurate energetic and spectroscopic information of ions as well as neutral molecules. The book represents the first detailed review of major experimental developments in the studies of single vacuum ultraviolet photon ionization and dissociation processes of gaseous molecules and clusters.
Book Synopsis Dissociative Photodetachment and Photodissociation Dynamics of Cluster Anions by : Christopher Robert Sherwood
Download or read book Dissociative Photodetachment and Photodissociation Dynamics of Cluster Anions written by Christopher Robert Sherwood and published by . This book was released on 1995 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-body Dissociative Photodetachment of Small Cluster Anions by : Amy Khai Luong
Download or read book Three-body Dissociative Photodetachment of Small Cluster Anions written by Amy Khai Luong and published by . This book was released on 2001 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Trends in Chemical Reaction Dynamics by : Xueming Yang
Download or read book Modern Trends in Chemical Reaction Dynamics written by Xueming Yang and published by World Scientific. This book was released on 2004 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of chemical reaction dynamics has made tremendous progressduring the last decade or so. This is due largely to the developmentof many new, state-of-the-art experimental and theoretical techniquesduring that period. It is beneficial to present these advances, boththeoretical and experimental, in a review volume published in twoparts (Parts I and II). The primary purpose of this review volume isto provide graduate students and experts in the field with a ratherdetailed picture of the current status of advanced experimental andtheoretical research in chemical reaction dynamics. All chapters inthese two parts have been written by world-renowned experts active insuch research.
Book Synopsis Modern Trends In Chemical Reaction Dynamics - Part I: Experiment And Theory by : Kopin Liu
Download or read book Modern Trends In Chemical Reaction Dynamics - Part I: Experiment And Theory written by Kopin Liu and published by World Scientific. This book was released on 2004-03-09 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of chemical reaction dynamics has made tremendous progress during the last decade or so. This is due largely to the development of many new, state-of-the-art experimental and theoretical techniques during that period. It is beneficial to present these advances, both theoretical and experimental, in a review volume published in two parts (Parts I and II). The primary purpose of this review volume is to provide graduate students and experts in the field with a rather detailed picture of the current status of advanced experimental and theoretical research in chemical reaction dynamics. All chapters in these two parts have been written by world-renowned experts active in such research.
Book Synopsis Photodetachment Dynamics of Oxygenated Organic Anions and Solvated Iodide Clusters by : Michael Shane Bowen
Download or read book Photodetachment Dynamics of Oxygenated Organic Anions and Solvated Iodide Clusters written by Michael Shane Bowen and published by . This book was released on 2005 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on the photodetachment dynamics of small oxygen-containing organic anions and iodide atoms clustered with a series of different solvents. These molecular systems represent important classes of transient species that play a role in complex oxidation and solvation phenomena. Photoelectron-photofragment coincidence spectroscopy was used to characterize the photodetachment and dissociation dynamics of these species. Interpretation of the resulting energy spectra, photoelectron angular distributions and dissociation dynamics was aided by density functional theory calculations. Small oxygen-containing organic radicals, such as the vinoxy and allyloxy radicals presented in Chapters 3 and 4, are representative volatile organic compounds. These species are of great interest to atmospheric and physical chemists because they play important roles in atmospheric oxidation and combustion processes. A detailed understanding of the energetics and dynamics of these reactive species is essential to understanding complex combustion and atmospheric environments. The photodetachment dynamics of solvated iodide anions probes solvation phenomena at a microscopic level. The investigations presented in Chapters 5 and 6 approach the study of solvation by characterizing the dissociative photodetachment dynamics of solvated iodide atoms, I−(X). This approach characterizes the half-collision dynamics between a series of different solvents and the iodine atom, as configured in the equilibrium geometries of the anionic precursors. The solvents investigated, X, were CO2, NH3, H2O, C6H5NH2 and C6H5OH. These studies yield information about the effects of different types of intermolecular forces on the photodetachment dynamics of I− as well as the dissociation dynamics of the weakly interacting neutral cluster constituents. For the I−(C6H5NH2) complex, a novel wavelength-independent autodetachment process involving a transient C6H5NH2 species was found to compete with direct photodetachment.
Book Synopsis Handbook of High-resolution Spectroscopy by : Martin Quack
Download or read book Handbook of High-resolution Spectroscopy written by Martin Quack and published by John Wiley & Sons. This book was released on 2011-09-26 with total page 2236 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of High-Resolution Spectroscopy has been considerably extended and even redefined in some areas. Combining the knowledge of spectroscopy, laser technology, chemical computation, and experiments, Handbook of High-Resolution Spectroscopy provides a comprehensive survey of the whole field as it presents itself today, with emphasis on the recent developments. This essential handbook for advanced research students, graduate students, and researchers takes a systematic approach through the range of wavelengths and includes the latest advances in experiment and theory that will help and guide future applications. The first comprehensive survey in high-resolution molecular spectroscopy for over 15 years Brings together the knowledge of spectroscopy, laser technology, chemical computation and experiments Brings the reader up-to-date with the many advances that have been made in recent times Takes the reader through the range of wavelengths, covering all possible techniques such as Microwave Spectroscopy, Infrared Spectroscopy, Raman Spectroscopy, VIS, UV and VUV Combines theoretical, computational and experimental aspects Has numerous applications in a wide range of scientific domains Edited by two leaders in this field Provides an overview of rotational, vibration, electronic and photoelectron spectroscopy Volume 1 - Introduction: Fundamentals of Molecular Spectroscopy Volume 2 - High-Resolution Molecular Spectroscopy: Methods and Results Volume 3 - Special Methods & Applications
Book Synopsis Reaction Dynamics Involving Ions, Radicals, Neutral and Excited Species by : Stefano Falcinelli
Download or read book Reaction Dynamics Involving Ions, Radicals, Neutral and Excited Species written by Stefano Falcinelli and published by Frontiers Media SA. This book was released on 2020-01-22 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt:
