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Spectroscopy And Dynamics Of Transient And Energetic Species
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Book Synopsis Spectroscopy and Dynamics of Transient Energetic Species by :
Download or read book Spectroscopy and Dynamics of Transient Energetic Species written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of the spectroscopy and dynamics of transient energetic species by anion photodetachment and cation recombination processes are reported. Experimental efforts focused on sulfur, nitrogen and oxygen clusters. The research included the first report of a 5-fold coincidence measurement in a study of O bar-8 -> O2+O2+O2+O2+e.
Book Synopsis Spectroscopy and Dynamics of Transient and Energetic Species by :
Download or read book Spectroscopy and Dynamics of Transient and Energetic Species written by and published by . This book was released on 2009 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free radicals, weakly bound van der Waals complexes, and metal and semiconductor clusters are characterized by photodetachment of the corresponding negative ions using slow electron velocity-map imaging (SEVI), a recently developed, high-resolution (2-3 cm-1) variant of negative ion photoelectron spectroscopy. The SEVI spectrum of a negative ion yields the electron affinity of the neutral, term values for excited states accessible via one-photon detachment, and accurate vibrational frequencies for the ground and accessible excited states. The combination of high energy resolution and the simultaneous measurement of photoelectron angular distributions provides a sensitive probe of adiabatic potential energy surfaces and vibronic coupling in neutral species formed by photodetachment. The SEVI experiments are complemented by infrared studies of size-selected negative ions and clusters using the free electron laser FELIX.
Book Synopsis Seventh-day Adventists in Science Fiction by :
Download or read book Seventh-day Adventists in Science Fiction written by and published by . This book was released on 2005 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Spectroscopy and Dynamics of Transient Species Formed in Pyrolysis Reactions. Three Year Progress Report, June 1, 1989--May 31, 1992 by :
Download or read book Laser Spectroscopy and Dynamics of Transient Species Formed in Pyrolysis Reactions. Three Year Progress Report, June 1, 1989--May 31, 1992 written by and published by . This book was released on 1991 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research concerns the study of the spectroscopy and excited state dynamics of a number of transient molecules containing either sulfur or oxygen. The identification and study of sulfur species which are analogs of important oxygen-containing combustion intermediates is important to our understanding of reactive intermediates. The oxygen-containing species chosen for study are new systems whose electronic spectra have not previously been identified. The major experimental technique used in this work was pyrolysis jet spectroscopy. Since many of the species have not been previously studied by laser techniques, much effort was devoted to determining methods for producing and observing them. We have been very successful in a number of cases and have developed some further experimental techniques.
Book Synopsis Laser Spectroscopy and Dynamics of Transient Species Formed in Pyrolysis Reactions by :
Download or read book Laser Spectroscopy and Dynamics of Transient Species Formed in Pyrolysis Reactions written by and published by . This book was released on 1991 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research concerns the study of the spectroscopy and excited state dynamics of a number of transient molecules containing either sulfur or oxygen. The identification and study of sulfur species which are analogs of important oxygen-containing combustion intermediates is important to our understanding of reactive intermediates. The oxygen-containing species chosen for study are new systems whose electronic spectra have not previously been identified. The major experimental technique used in this work was pyrolysis jet spectroscopy. Since many of the species have not been previously studied by laser techniques, much effort was devoted to determining methods for producing and observing them. We have been very successful in a number of cases and have developed some further experimental techniques.
Download or read book Gas-Phase Molecular Dynamics written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research is carried out as part of the Gas-Phase Molecular Dynamics program in the Chemistry Department at Brookhaven National Laboratory. Chemical intermediates in the elementary gas-phase reactions involved in combustion chemistry are investigated by high resolution spectroscopic tools. Production, reaction, and energy transfer processes are investigated by transient, double resonance, polarization and saturation spectroscopies, with an emphasis on technique development and connection with theory, as well as specific molecular properties.
Book Synopsis Spectroscopy and Dynamics of Transient Species, the Vinyl Radical and Highly Vibrationally Excited Acetylene by : Matthew Nikow
Download or read book Spectroscopy and Dynamics of Transient Species, the Vinyl Radical and Highly Vibrationally Excited Acetylene written by Matthew Nikow and published by . This book was released on 2012 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Spectroscopy and Dynamics of Transient Species. Progress Report, June 1, 1993--May 31, 1994 by :
Download or read book Laser Spectroscopy and Dynamics of Transient Species. Progress Report, June 1, 1993--May 31, 1994 written by and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work was done on sub-Doppler spectroscopy of thioformaldehyde, electronic spectrum of FS2 radical, FTIR spectra of the transient molecule formyl chloride (HCOCl and DCOCl), and high-resolution FTIR spectra of the?9 (CH2 wag) and?5 (CSO symm. stretch) bands of sulfine (H2CSO), a transient species formed in pyrolysis of dimethyl sulfoxide and oxidation of thioformaldehyde.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopy, Dynamics and Molecular Theory of Carbon Plasmas and Vapors by : Laszlo Nemes
Download or read book Spectroscopy, Dynamics and Molecular Theory of Carbon Plasmas and Vapors written by Laszlo Nemes and published by World Scientific. This book was released on 2011 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ch. 1. Spectroscopy of carbon nanotube production processes / B.A. Cruden -- ch. 2. Spectroscopic studies on laser-produced carbon vapor / K. Sasaki -- ch. 3. Kinetic and diagnostic studies of carbon containing plasmas and vapors using laser absorption techniques / J. Ropcke, A. Rousseau and P.B. Davies -- ch. 4. Spectroscopy of carbon containing diatomic molecules / J.O. Hornkohl, L. Nemes and C. Parigger -- ch. 5. Optical emission spectroscopy of C[symbol] and C[symbol] molecules in laser ablation carbon plasma / N.A. Savastenko and N.V. Tarasenko -- ch. 6. Intra-cavity laser spectroscopy of carbon clusters / S. Raikov and L. Boufendi -- ch. 7. Dynamics of laser-ablated carbon plasma for thin film deposition : spectroscopic and imaging approach / R.K. Thareja and A.K. Sharma -- ch. 8. Laser spectroscopy of transient carbon species in the context of soot formation / V. Nevrly [und weitere] -- ch. 9. Developing new production and observation methods for various sized carbon nanomaterials from clusters to nanotubes / T. Sugai -- ch. 10. Potential model for molecular dynamics of carbon / A.M. Ito and H. Nakamura -- ch. 11. Electronic and molecular structures of small- and medium-sized carbon clusters / V. Parasuk -- ch. 12. Vibrational spectroscopy of linear carbon chains / C.-P. Chou [und weitere] -- ch. 13. Dynamics simulations of fullerene and SWCNT formation / S. Irle [und weitere] -- ch. 14. Mechanisms of carbon gasification reactions using electronic structure methods / J.F. Espinal, T.N. Truong and F. Mondragon
Book Synopsis Spectroscopy, Dynamics and Molecular Theory of Carbon Plasmas and Vapors by : Laszlo Nemes
Download or read book Spectroscopy, Dynamics and Molecular Theory of Carbon Plasmas and Vapors written by Laszlo Nemes and published by World Scientific. This book was released on 2011 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a stop-gap contribution to the science and technology of carbon plasmas and carbon vapors. It strives to cover two strongly related fields: the molecular quantum theory of carbon plasmas and carbon nanostructures; and the molecular and atomic spectroscopy of such plasmas and vapors. These two fields of research are strongly intertwined and thus reinforce one another.Even though the use of carbon nanostructures is increasing by the day and their practical uses are emerging, there is no modern review on carbon plasmas, especially from molecular theoretical and spectroscopic viewpoints. The importance of the present book is therefore great from both educational and practical aspects. This review might be the first step towards bringing such textbooks into existence for university education. Similarly, for applied and engineering works in carbon nanostructures, the book provides a theoretical salient point for technologists in the field.
Book Synopsis Advances in Chemical Reaction Dynamics by : Peter M. Rentzepis
Download or read book Advances in Chemical Reaction Dynamics written by Peter M. Rentzepis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the formal lectures and contributed papers presented at the NATO Advanced Study Institute on. the Advances in Chemical Reaction Dynamics. The meeting convened at the city of Iraklion, Crete, Greece on 25 August 1985 and continued to 7 September 1985. The material presented describes the fundamental and recent advances in experimental and theoretical aspects of, reaction dynamics. A large section is devoted to electronically excited states, ionic species, and free radicals, relevant to chemical sys tems. In addition recent advances in gas phase polymerization, formation of clusters, and energy release processes in energetic materials were presented. Selected papers deal with topics such as the dynamics of electric field effects in low polar solutions, high electric field perturbations and relaxation of dipole equilibria, correlation in picosecond/laser pulse scattering, and applications to fast reaction dynamics. Picosecond transient Raman spectroscopy which has been used for the elucidation of reaction dynamics and structural changes occurring during the course of ultrafast chemical reactions; propagation of turbulent flames and detonations in gaseous· energetic systems are also discussed in some detail. In addition a large portion of the program was devoted to current experimental and theoretical studies of the structure of the transition state as inferred from product state distributions; translational energy release in the photodissociation of aromatic molecules; intramolecu lar and intraionic dynamic processes.
Book Synopsis Ultrafast Infrared Vibrational Spectroscopy by : Michael D. Fayer
Download or read book Ultrafast Infrared Vibrational Spectroscopy written by Michael D. Fayer and published by CRC Press. This book was released on 2013-03-04 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of laser-based sources of ultrafast infrared pulses has extended the study of very fast molecular dynamics to the observation of processes manifested through their effects on the vibrations of molecules. In addition, non-linear infrared spectroscopic techniques make it possible to examine intra- and intermolecular interactions and how such interactions evolve on very fast time scales, but also in some instances on very slow time scales. Ultrafast Infrared Vibrational Spectroscopy is an advanced overview of the field of ultrafast infrared vibrational spectroscopy based on the scientific research of the leading figures in the field. The book discusses experimental and theoretical topics reflecting the latest accomplishments and understanding of ultrafast infrared vibrational spectroscopy. Each chapter provides background, details of methods, and explication of a topic of current research interest. Experimental and theoretical studies cover topics as diverse as the dynamics of water and the dynamics and structure of biological molecules. Methods covered include vibrational echo chemical exchange spectroscopy, IR-Raman spectroscopy, time resolved sum frequency generation, and 2D IR spectroscopy. Edited by a recognized leader in the field and with contributions from top researchers, including experimentalists and theoreticians, this book presents the latest research methods and results. It will serve as an excellent resource for those new to the field, experts in the field, and individuals who want to gain an understanding of particular methods and research topics.
Book Synopsis Transient Techniques in NMR of Solids by : Bernard C. Gerstein
Download or read book Transient Techniques in NMR of Solids written by Bernard C. Gerstein and published by . This book was released on 1985 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is an ideal starting point for the graduate student seeking a basic introduction to the theory and uses of solid-state nuclear magnetic resonance (NMR) spectroscopy. Accessible to students with only a survey-level physics background, the material assumes little prior knowledge of the basic theory of electromagnetism. All the major areas are covered, including an introduction to concepts of time-dependent quantum mechanics as they apply to NMR spectroscopy of the solid state. Each chapter includes problems designed to enhance the reader's understanding of the material. Instructive and practical, this volume provides the basic knowledge needed to access the general literature and the more advanced monographs on this subject. In addition to assisting entrance into the field, Transient Techniques in NMR of Solids will be a useful guide for professionals already working in related areas of chemistry. FROM THE PREFACE: Nuclear magnetic resonance (NMR) is truly a remarkable phenomenon. Remarkable can imply different things to different people. From the point of view of a physicist, spin dynamics is an elegant example of the use of time-dependent quantum mechanics, and NMR absorption of energy is a prototype for spectroscopic transitions. From the point of view of the practicing chemist and materials scientist, NMR spectroscopy is an invaluable tool for the identification of chemical species and structures. Had NMR spectroscopic techniques commercially available in the early 1960s been the only result of investigations of this phenomenon, it would have had a major impact on the course of chemical analysis. The study of liquids and solutions for chemical shifts and couplings of protons had produced a rapid means of identifying chemical species nondestructively. The study of dynamical properties also could be addressed by study of temperature dependence of the spectra or of the saturation of the resonance by high-power irradiation. Even at that time, however, studies of the spin dynamics had already begun to indicate that there were many interesting facets of the NMR phenomenon left to exploit. For example, the Fourier-transform relationship of the free-induction decay and the absorption spectrum had been shown and the basis of the cross-polarization experiment was being investigated. A number of chemists had begun to study the spin*b1lattice relaxation times of species by pulse NMR techniques by utilizing methods that were not familiar at that time to the typical chemist but that are now commonly employed in NMR analysis. The principal characteristic of the NMR technique that makes it so useful for chemical analysis of liquids and solutions is the high resolution that allows one to observe very small interactions such as the chemical shift and the spin*b1spin coupling. These weak interactions are quite sensitive to the local environment of the spin and therefore may be used as a diagnostic for the environment. The connectivity of chemical structure is often mimicked closely in the NMR connectivity of the spectrum, and quantitative informaton is relatively easy to obtain. Nuclear magnetic resonance spectra of solids exhibit such resolution only in special cases. The primary (although not the exclusive) reason for the lack of resolution in the spectrum of a typical solid is the presence of the dipole*b1dipole interaction, which dominates the NMR spectroscopy of solids that have been of interest to chemists. One solution (no pun intended) to the problem of obtaining chemical-shift information about such solids is to dissolve them and to study them in solution. However, if the solid is insoluble or otherwise intractable or if the analysis involves questions about the properties of the substance in the solid state, then there arises a need for techniques to study the weaker interactions in the presence of the dipole*b1dipole interaction or other overwhelming interactions. This volume describes the means dev
Book Synopsis Spectroscopy of Transient Species by : James Richard Chow
Download or read book Spectroscopy of Transient Species written by James Richard Chow and published by . This book was released on 1989 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopy, Structure, and Energy Transfer of Transient Radicals in Combustion by :
Download or read book Spectroscopy, Structure, and Energy Transfer of Transient Radicals in Combustion written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopy, structure, and energy transfer of transient radicals in combustion Period: 4/15/04-12/31/06 PI: Hai-Lung Dai, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104 [email protected] A newly developed approach based on nanosecond time resolved Fourier Transform IR Emission Spectroscopy (TR-FTIRES) has been applied to the investigation of the spectroscopy and structure of unknown transient radicals that are important in combustion processes. Several radicals including deuterated-vinyl, cyanooxomethyl (OCCN) and ketenyl (HCCO) whose vibrational structure has not been determined have been examined. The transient radical species is produced with high vibrational excitation through UV photolysis of a precursor molecule. The IR emission from the highly excited species through its IR active vibrational modes is detected with fast time resolution using the TR-FTIR technique. A new two-dimensional cross-spectra correlation technique has been developed for analyzing the time-resolved FTIR emission spectra. This analysis reveals the common set of emission bands from the same target radical in the emission spectra obtained using different precursors. The spectroscopic approach also allows the reactions of the excited radical and the photolysis reaction of the precursor molecules to be characterized. All these information are fundamentally important to the understanding of chemical dynamics of radicals as well as the combustion processes.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
