Download or read book Collision Processes and Excitation of UV Emission from Planetary Atmospheric Gases written by SV Avakyan and published by CRC Press. This book was released on 1999-01-27 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades, the excitation and ionization of atmospheric gases has become an area of intense research. A large amount of data have been accumulated concerning the various elementary processes which occur when photons, electrons and ions collide with atoms and molecules. This scattered information has now been collected in a handbook for the first time, and the authors give a critical analysis of relevant data. This book is a comprehensive and detailed study of the available information and is distinguished by the following outstanding features: the consideration of a large number of atmospheric constituents, including H^O2, H, N^O2, N, O^O2, O, CO, CO^O2, H^O2O, HCl and some hydrocarbons the maximum number of space particles, including magnetospheric particles, are considered as projectiles: photons, electrons, hydrogen atoms, protons and helium ionsthe energy range under study corresponds to the real spectrum of cosmic fluxes, from threshold values for elementary processes up to several thousand keV the recommended values of cross sections, obtained from analysis of the available experimental data, are given in the handbook and their accuracy is estimated. These features make the handbook particularly valuable to specialists in the aeronomy of planets, comets and active perturbations, as well as to experimentalists and theoreticians working in the fields of plasma physics, atomic and molecular physics, physics of the upper atmosphere, chemical physics, optics and spectroscopy.
Download or read book Collision Processes and Excitation of UV Emission from Planetary Atmospheric Gases written by SV Avakyan and published by Routledge. This book was released on 2022-03-11 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades, the excitation and ionization of atmospheric gases has become an area of intense research. A large amount of data have been accumulated concerning the various elementary processes which occur when photons, electrons and ions collide with atoms and molecules. This scattered information has now been collected in a handbook for the first time, and the authors give a critical analysis of relevant data. This book is a comprehensive and detailed study of the available information and is distinguished by the following outstanding features: the consideration of a large number of atmospheric constituents, including H^O2, H, N^O2, N, O^O2, O, CO, CO^O2, H^O2O, HCl and some hydrocarbons the maximum number of space particles, including magnetospheric particles, are considered as projectiles: photons, electrons, hydrogen atoms, protons and helium ionsthe energy range under study corresponds to the real spectrum of cosmic fluxes, from threshold values for elementary processes up to several thousand keV the recommended values of cross sections, obtained from analysis of the available experimental data, are given in the handbook and their accuracy is estimated. These features make the handbook particularly valuable to specialists in the aeronomy of planets, comets and active perturbations, as well as to experimentalists and theoreticians working in the fields of plasma physics, atomic and molecular physics, physics of the upper atmosphere, chemical physics, optics and spectroscopy.
Download or read book Collisional Processes Involving Atmospheric Gases written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes research works on the following areas. (1) Measurements of cross sections for electron impact excitation into the metastable levels of argon and number densities of metastable argon atoms have been completed. We also measured the disappearance rates of the metastable atoms after the electron beam is turned off and the observed decay modes are consistent with diffusion loss. (2) Electron impact excitation of the vibrational levels of the C32u electronic state of the N2 molecule and the emissions produced by the excited N2 molecules have been studied. The relative intensities of the various (v', v") bands in the electron beam experiments are compared with those observed in a dc discharge. (3) A new novel method has been developed utilizing magneto-optically trapped atoms as targets for measuring electron scattering cross sections and applied to electron-Rb scattering. This new method has advantages over the conventional methods. (4) Further studies of cold trapped atoms have led to development of another novel technique, i.e., a new method for measuring total electron impact ionization cross section using trapped atom targets. Application to Rb shows that this new method has advantages over the crossed beam method.
Download or read book Collisional Processes in the Solar System written by Mikhail Ya. Marov and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exploration of our Solar System is rapidly growing in importance as a scientific discipline. During the last decades, great progress has been achieved as the result of space missions to planets and small bodies - as teroids and comets - and improved remote-sensing methods, as well as due to refined techniques of laboratory measurements and a rapid progress in theoretical studies, involving the development of various astrophysical and geophysical models. These models are based, in particular, on the approach of comparative planetology becoming a powerful tool in revealing evolu tionary processes which have been shaping the planets since their origin. Comets and asteroids, being identified as remnants of planetary formation, serve as a clue to the reconstruction of Solar System history because they encapsulated the primordial material from which the planets were built up. At the same time, these interplanetary carriers of original matter and mes sengers from the past, being triggered by dynamical processes well outside our neighboring space, were responsible for numerous catastrophic events when impacting on the planets and thus causing dramatic changes of their natural conditions. In the crossroads of astronomy and geophysics, recent years have seen a growing understanding of the importance of collisional processes through out the history of the Solar System and, therefore, the necessity to get more insight into the problem of interactions of planets and small bodies.
Download or read book Collisional Line Broadening and Shifting of Atmospheric Gases written by Jeanna Buldyreva and published by World Scientific. This book was released on 2011 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of the modern theory of spectral line broadening and shifting by pressure of atmospheric gases. It describes current semi-classical methods for calculating vibrotational line widths and shifts, including very recent modifications and new developments realised by the authors themselves. For most of the considered molecular systems, analytical formulae are also given, which enable the calculation of line broadening coefficients without the use of semi-classical methods. The results of calculations by various approaches are compared with experimental data available in the literature. Numerous appendices list theoretical expressions and parameters' values required for the writing of computer programs for calculation of line broadening and line shifting coefficients.The book is addressed to undergraduate and postgraduate students as well as to professional scientists and researchers working in the field of molecular physics, molecular spectroscopy, quantum chemistry and mathematical physics.
Download or read book Studies and Experimental Work on Atomic Collision Processes Occuring in Atmospheric Gases written by A. V. Phelps and published by . This book was released on 1969 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate coefficient for the two-body attachment to O3 of 300K electrons has been measured. The attachment coefficient increases rapidly with increasing electron energy at characteristic electron energies of 0.3 eV. Measurements in pure O3 also show that the attachment process is directly porportional to pressure for pressures between 0.5 and 2 Torr, as expected for a dissociative attachment process. Unsuccessful attempts to detect electron detachment in collisions of O3( - ) and CO3( - ) with O3 suggest an upper limit to the rate coefficient for this process. (Author).
Download or read book Study and Experimental Work on Atomic Collision Process Occurring in Atmospheric Gases written by A. V. Phelps and published by . This book was released on 1966 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the research conducted under the AFWL-supported portion of our program of studies of atomic collision processes occurring in atmospheric gases.
Download or read book Nonequilibrium Processes in the Planetary and Cometary Atmospheres Theory and Applications written by Mikhail Ya. Marov and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the approach to the kinetic simulation of nonequilib rium processes in the planetary atmospheres which the authors developed and dealt with since the 1970s. The results of this study, which are focused on the nonequilibrium collisional processes in the atmospheres of planets and comets, are thoroughly reviewed and discussed. Many specific problems of atmospheric modeling, involving numerical evaluation of aeronomic pro cesses, are addressed and compared with the available experimental data. The kinetic approach proved to be especially effective to model the in teraction of the incident shortwave solar radiation with the rarefied gas of planetary upper atmospheres. It involves various processes of photolysis, en ergetic electron impacts, and accompanying numerous chemical reactions, as well as processes occurring in the intermediate ("transition") zones of planetary and cometary gas envelopes. The underlying mathematical treat ment is based on the stochastic approach for the solution of the Boltzmann type equation and implies the development of the efficient algorithms for its computer simulation. Some results of this study were previously summa rized in the monograph issued in Russian (Marov et al. , 1990) and later in the review paper published in Space Science Reviews (Marov et al. , 1996). The basic principles of stochastic simulation were first developed in the field of rarefied gas dynamics and were successfully applied to the solution of some engineering problems of aerodynamics and heat transfer.
Download or read book Nonequilibrium Processes in the Planetary and Cometary Atmospheres Theory and Applications written by Mikhail I︠A︡kovlevich Marov and published by Springer. This book was released on 1997-09-30 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the approach to the kinetic simulation of nonequilib rium processes in the planetary atmospheres which the authors developed and dealt with since the 1970s. The results of this study, which are focused on the nonequilibrium collisional processes in the atmospheres of planets and comets, are thoroughly reviewed and discussed. Many specific problems of atmospheric modeling, involving numerical evaluation of aeronomic pro cesses, are addressed and compared with the available experimental data. The kinetic approach proved to be especially effective to model the in teraction of the incident shortwave solar radiation with the rarefied gas of planetary upper atmospheres. It involves various processes of photolysis, en ergetic electron impacts, and accompanying numerous chemical reactions, as well as processes occurring in the intermediate ("transition") zones of planetary and cometary gas envelopes. The underlying mathematical treat ment is based on the stochastic approach for the solution of the Boltzmann type equation and implies the development of the efficient algorithms for its computer simulation. Some results of this study were previously summa rized in the monograph issued in Russian (Marov et al. , 1990) and later in the review paper published in Space Science Reviews (Marov et al. , 1996). The basic principles of stochastic simulation were first developed in the field of rarefied gas dynamics and were successfully applied to the solution of some engineering problems of aerodynamics and heat transfer.
Download or read book Experimental Laboratory Studies on Electron Collision Processes in Atmospheric Gases written by G. J. Schulz and published by . This book was released on 1973 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research topics briefly summarized include vibrational excitation in NO and O2; three-body attachment in O2 and its temperature dependence; resonance in CO, O2, and NO. Similar studies were performed on triatomic molecules. (Author).
Download or read book Heterogeneous Atmospheric Chemistry written by David R. Schryer and published by American Geophysical Union. This book was released on 1982 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 26. In the past few years it has become increasingly clear that heterogeneous, or multiphase, processes play an important role in the atmosphere. Unfortunately the literature on the subject, although now fairly extensive, is still rather dispersed. Furthermore, much of the expertise regarding heterogeneous processes lies in fields not directly related to atmospheric science. Therefore, it seemed desirable to bring together for an exchange of ideas, information, and methodologies the various atmospheric scientists who are actively studying heterogeneous processes as well as other researchers studying similar processes in the context of other fields.
Download or read book Collision Processes in Gases written by Frederick Latham Arnot and published by . This book was released on 1950 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is based on a course of lectures which I gave to advanced students in physics and chemistry in the University of St. Andrews during the winter of 1931-1932. Its main object is to assist those who are about to begin experimental research on problems involving the collision of electrons, photons and positive ions with atoms and molecules of a gas at low pressures"--Page v.
Download or read book Measurement of Atmospheric Gases written by Harold Schiff and published by . This book was released on 1991 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non lte Radiative Transfer In The Atmosphere written by Manuel Lopez-puertas and published by World Scientific. This book was released on 2001-12-13 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last three decades, it has become increasingly clear that atmospheric modelling and remote sounding of the atmosphere from space, to name just two important application areas, are affected by non-equilibrium processes which have not been incorporated into traditional radiative transfer calculations. These processes, dubbed “non-LTE”, are therefore the subject of growing interest among scholars and researchers dealing with the upper atmosphere. This important book provides the first comprehensive and “global” description of non-LTE infrared emissions in the atmosphere of the Earth and other planets, starting with the theoretical foundations and progressing to the most important applications. Besides giving an introduction to this complex subject, it is a guide to the state-of-the-art in incorporating non-LTE processes into radiative transfer algorithms and computer models of the atmosphere. Numerous examples are presented of the application of these methods to (a) atmospheric remote sensing, (b) atmospheric energy budget (cooling and heating rate) calculations, and (c) atmospheres other than the Earth's.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1977 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Chemistry written by E. D. Goldberg and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Research Resum s written by and published by . This book was released on with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
