Download or read book Photoionization Dynamics and Cation Spectroscopy with Coherent VUV Radiation written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photoionization Dynamics and Cation Spectroscopy with Coherent VUV Radiation written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulsed field ionization (PFI) has been used in conjunction with coherent VUV radiation to investigate the rotational state distributions of molecular cations following single photon ionization. For photoionization of the H2X (X = O, S) molecules, transitions between asymmetric top levels involving the rotational angular momentum projections, K{sub a} and K{sub c}, permit resolution of the photoelectron continua according to symmetry. The observed spectra also clearly demonstrate the importance of the non-spherical nature of the molecular ion potential which leads to photoelectron final states which are unexpected from atomic-like analogies.
Download or read book Rotationally Resolved Photoionization with Coherent VUV Radiation written by and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulsed field ionization (PFI) has been used in conjunction with coherent VUV radiation to investigate the rotational state distributions of molecular cations following single photon ionization. The rotational state distributions for several linear cations (O2, NO, OH(OD), HCl and N20 can be interpreted predominately on the basis of the near-threshold, one-electron photoionization dynamics; however, field-induced autoionization is often the dominate ionization pathway for rotational branches involving negative changes in core angular momentum. For photoionization of the H2X (X = 0, S) non-linear triatomic molecules, transitions between asymmetric top levels involving the rotational angular momentum projections, K{sub a} and K{sub c} permit resolution of the photoelectron continua according to symmetry. The observed spectra clearly demonstrate the importance of the non-spherical nature of the molecular ion potential which leads to photoelectron final states which are unexpected from atomic-like analogies.
Download or read book Resonance Ionization Spectroscopy 1992 Proceedings of the Sixth INT Symposium on Resonance Ionization Spectroscopy and its Applications Santa Fe New Mexico 24 29 May 1992 written by Charles M. Miller and published by CRC Press. This book was released on 1992-11-01 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resonance Ionization Spectroscopy 1992 brings together developments in resonance ionization spectroscopy (RIS), an ultrasensitive analytical technique for elemental or isotopic analysis. The development of RIS in this book is of great interest to researchers in laboratories working in physics, chemistry, materials science, and earth and environmental sciences.
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 1991-06-25 with total page 582 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.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vacuum Ultraviolet Radiation Physics Proceedings Of The 10th Vuv Conference written by F Wuileumier and published by World Scientific. This book was released on 1993-10-16 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: When after three decades of research Singapore could produce its own water, the little city-state was said to have lost its vulnerability. No longer would every policy have to bend at the knees for water survival. It was finally time to celebrate liberty!When did the same moment come in Bala's life? Was it when in mid-Atlantic he heard of his promotion as Controller of Posts? Or was it when he was appointed by the President as member of the Parliamentary Elections Minority Committee? Or was it at a moment of tragic loss when he realised he had nothing more to lose?Singapore, My Country tells M Bala Subramanion's story, a second generation Indian who lost his father to the Death Railway, witnessed Subhas Chandra Bose at the Padang and later emerged as not only a senior civil servant but the man behind multiple social interventions, living in a fast evolving Singapore.The histories of the man and his nation remain seamlessly intertwined, each peppered with equal doses of endeavour, ingenuity and a sheer will to survive!
Download or read book Resonance Ionization Spectroscopy written by and published by . This book was released on 1992 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photoabsorption Photoionization and Photoelectron Spectroscopy written by Joseph Berkowitz and published by Academic Press. This book was released on 2012-12-02 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoabsorption, Photoionization, and Photoelectron Spectroscopy explores photoabsorption processes involving individual, isolated molecules in the wavelength or photon energy range from the ionization thresholds of molecules (usually in the vacuum ultraviolet region) through the soft and hard X-ray region and beyond the ""K edge."" The interaction between electromagnetic radiation and isolated molecules based on photoabsorption, photoionization, and photoelectron spectroscopy studies is described, along with the techniques for measurement of total and partial cross sections. This book is comprised of eight chapters and examines the decomposition of molecules and molecular ions as well as mildly excited (valence shell excitation) and highly excited (inner shell excitation) molecules. After providing a general theoretical background, it discusses certain classes of atoms and molecules and considers electromagnetic interactions with gases. The following chapters focus on photoabsorption below the first ionization limit; quasi-discrete states above the first ionization potential; and the ionization continuum. Total photoabsorption and photoionization cross sections for selected molecules are also considered, and the angular distribution of photoelectrons is analyzed. The various measurement techniques are described in the last chapter. This monograph will be of interest to radiation chemists, radiation physicists, photochemists, mass spectrometrists, and perhaps radiation biologists.
Download or read book Coherent Vibrational Dynamics written by Guglielmo Lanzani and published by CRC Press. This book was released on 2007-11-29 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remarkable developments in the spectroscopy field regarding ultrashort pulse generation have led to the possibility of producing light pulses ranging from 50 to5 fs and frequency tunable from the near infrared to the ultraviolet range. Such pulses enable us to follow the coupling of vibrational motion to the electronic transitions in molecules and solids in real time. Detailing these advanced developments, as well as the fundamental methods and tools of vibrational spectroscopy, Coherent Vibrational Dynamics providesresearchers and students with a uniquely comprehensive resource. With the contributions of pioneering scientists, this seminal volume – · Outlines the principles and tools used on time-domain vibrational spectroscopy and provides a general introduction to the subject of coherent phonons · Describes the modern methods for tunable ultrashort pulse generation from infrared to visible-UV · Reviews coherent vibrational dynamics in small molecules in liquids (hydrogen bonds), and in carbon based conjugated materials (polyenes, carotenoids, and semiconducting polymers) · Explores phonon dynamics in semiconductors (bulk and heterostructures) and in quasi-one-dimensional systems Supplemented with a great number of references, and covering fundamental as well advanced topics, this text provides a valuable reference for both graduate students and senior researchers investigating materials in physics, chemistry, and biology. It is also an excellent starting point for those who want to pursue research in the field of ultrafast optics and spectroscopy.
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.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992-11 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rotationally Resolved Photoionization with Coherent VUV Radiation written by and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frontiers of Chemical Dynamics written by E. Yurtsever and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the lectures presented at the NATO Advanced Study Institute (ASI) on " Frontiers of Chemical Dynamics ", held in the Club AIda, Kerner, Turkey, from 5th September to 16th September 1994. The Kerner area, famous for its pristine beaches and craggy mountains provided an excellent atmosphere for an intellectually and socially active meeting. The first class facilities of Club AIda allowed the participants to concentrate on the scientific activities without any outside interferences and disturbances. The main objective of the meeting was to bring experts of chemical dynamics to discuss problems from both experimental and theoretical points of view. The organizing committee has helped a great deal to collect an impressive list of lecturers, although there were quite a number of other scientists whom we would have liked to invite. Unfortunately, the number of lecturers is limited and we had to leave out some of them. The selection of the lecturers from a very long list was a difficult process and those who are approached in our very first attempt were all known for giving very good lectures. The purpose of the ASI's are mainly educational even though they may be at a very high level and it is essential to keep in mind the pedagogical aspects of the meeting without sacrificing the scientific quality. This point was underlined several times in our communications with lecturers.
Download or read book Resonance Enhanced Multiphoton and Single photon Ionization of Molecules and Molecular Fragments Final Report May 1993 April 1997 written by and published by . This book was released on 1998 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resonance enhanced multiphoton ionization (REMPI) utilizes pulsed laser radiation to prepare a molecule in an excited state via absorption of one or more photons and to subsequently ionize that level before it decays. A remarkable feature of REMPI is that the very narrow bandwidth of laser radiation makes it possible to select a specific rotational level in the initial (ground) state and to prepare the excited state of interest in a single rotational level. Thus, by suitable choice of the excitation step, it is possible to selectively ionize a species that may be present. The key objective of the effort is to carry out quantitative studies of REMPI of molecules and molecular fragments, as well as of single-photon ionization of these species by coherent VUV radiation, in order to provide a robust description of significant spectral features of interest in related experiments and needed insight into the underlying dynamics of these spectra. A major focus of the effort is joint theoretical and experimental studies of these ion rotational distributions which are being widely studied by the zero-kinetic-energy (ZEKE) technique. This technique, which is based on the detection of photoelectrons resulting from pulsed-field ionization of very high Rydberg states lying just below an ion threshold, makes it possible to obtain cation distributions with subwavenumber resolution. The unprecedented resolution of this ZEKE technique is opening up entirely new vistas in studies of photoionization dynamics, ion spectroscopy, and state-selected ion-molecule reactions. Emerging applications built on the ultra-high resolution of this technique include its use for accurate determination of thermochemically important ionization energies, for characterization of ion rovibrational level structure of large organic molecules, of elemental clusters, and of weakly bound molecular complexes, for probing reactive fragments, and for pump-probe photoelectron studies of wavepacket dynamics. This surge of experimental activity in ultra-high resolution studies of molecular photoelectron spectra continues to raise new theoretical challenges and has provided the stimulus for several of the collaborations with experimental groups in North America and Europe.
Download or read book Advances In Multi photon Processes And Spectroscopy Vol 2 written by Shih-i Chu and published by World Scientific. This book was released on 1986-05-01 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the recent rapid growth in both experimental and theoretical studies of multiphoton processes and multiphoton spectroscopy of atoms, ions and molecules in chemistry, physics, biology, material sciences, etc. It contains papers readable by active researchers and by those who intend to enter it. Theory and experiment are equally emphasized, and each review article is written in a self-contained manner by experts in the field so that readers learn the subject without much preparation.
Download or read book High Resolution Laser Photoionization and Photoelectron Studies written by Ivan Powis and published by John Wiley & Sons. This book was released on 1995-08-29 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in both experimental techniques and theoretical methodologies have meant that increasingly sophisticated studies concerning the formation, structures, energetics, and reaction dynamics of state- or energy-selected molecular ions can now be performed. In order to better serve the ion chemistry and physics community, each volume of this series will be dedicated to reviewing a specific topic, emphasizing new experimental and theoretical developments in the study of ions. The Wiley Series in Ion Chemistry and Physics will help stimulate new research directions and point to future opportunities in the field of ion chemistry and physics. This fourth volume is devoted to developments associated with the high resolution study of molecular photoionization, presented from both experimental and theoretical viewpoints. This field has been revolutionized in recent years through the rapid development of zero kinetic energy (ZEKE) photoelectron spectroscopy, which is featured prominently within this volume. These advances have expanded the researcher' s ability to probe not just structural features, but also the detailed dynamics of a system, resulting in the interest and applicability of the technique being broadened to areas of chemical physics extending beyond the traditional study of photoionization per se. Each of the twelve chapters making up this volume is written by leading researchers in their respective fields.
