Author: Shivshankar Gopala PrakashPublisher:
ISBN:
Category : Energy transfer
Languages : en
Pages : 206
Book Description
Vibrational Energy Transfer Rate Studies in Shock-heated Carbon Dioxide-helium Mixtures by Infrared Emissions and Tuned-laser Absorption
Author: Shivshankar Gopala PrakashPublisher:
ISBN:
Category : Energy transfer
Languages : en
Pages : 206
Book Description
Scientific and Technical Aerospace Reports
Author: Dynamics of Molecular Collisions
Author: W. MillerPublisher: Springer Science & Business Media
ISBN: 1475706448
Category : Science
Languages : en
Pages : 391
Book Description
Activity in any theoretical area is usually stimulated by new experimental techniques and the resulting opportunity of measuring phenomena that were previously inaccessible. Such has been the case in the area under consideration he re beginning about fifteen years aga when the possibility of studying chemical reactions in crossed molecular beams captured the imagination of physical chemists, for one could imagine investigating chemical kinetics at the same level of molecular detail that had previously been possible only in spectroscopic investigations of molecular stucture. This created an interest among chemists in scattering theory, the molecular level description of a bimolecular collision process. Many other new and also powerful experimental techniques have evolved to supplement the molecular be am method, and the resulting wealth of new information about chemical dynamics has generated the present intense activity in molecular collision theory. During the early years when chemists were first becoming acquainted with scattering theory, it was mainly a matter of reading the physics literature because scattering experiments have long been the staple of that field. It was natural to apply the approximations and models that had been developed for nuclear and elementary particle physics, and although some of them were useful in describing molecular collision phenomena, many were not.
Research in Progress
Author: Journal of Research of the National Institute of Standards and Technology
Author: Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 816
Book Description
Reports NIST research and development in the physical and engineering sciences in which the Institute is active. These include physics, chemistry, engineering, mathematics, and computer sciences. Emphasis on measurement methodology and the basic technology underlying standardization.
Review, Naval Research Laboratory, Washington, D.C.
Author: United States. Office of Naval ResearchPublisher:
ISBN:
Category :
Languages : en
Pages : 260
Book Description
Energy Research Abstracts
Author: Fiscal Year 1986 Department of Energy Authorization (basic Research Programs)
Author: United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Development and ApplicationsPublisher:
ISBN:
Category : Fossil fuels
Languages : en
Pages : 1160
Book Description
Gas Lasers
Author: E. W. McDanielPublisher: Academic Press
ISBN: 1483218686
Category : Science
Languages : en
Pages : 486
Book Description
Applied Atomic Collision Physics, Volume 3: Gas Lasers describes the applications of atomic collision physics in the development of many types of gas lasers. Topics covered range from negative ion formation in gas lasers to high-pressure ion kinetics and relaxation of molecules exchanging vibrational energy. Ion-ion recombination in high-pressure plasmas is also discussed, along with electron-ion recombination in gas lasers and collision processes in chemical lasers. Comprised of 14 chapters, this volume begins with a historical summary of gas laser developments and an overview of the basic operating principles of major gas laser types. The discussion then turns to the mechanism of formation of negative ions in gas lasers; ion-ion recombination in high-pressure plasmas; electron-ion recombination in gas lasers; and collision processes in chemical lasers. Subsequent chapters focus on high-energy carbon dioxide laser amplifiers; spectroscopy and excited state chemistry of excimer lasers; rare-gas halide lasers; transient optical absorption in the ultraviolet; and pre-ionized self-sustained laser discharges. The final chapter considers the stability of excimer laser discharges. This book will be of interest to physicists and chemists.
Uniform Supersonic Flows In Chemical Physics: Chemistry Close To Absolute Zero Studied Using The Cresu Method
Author: Bertrand R RowePublisher: World Scientific
ISBN: 1800611005
Category : Science
Languages : en
Pages : 728
Book Description
Radioastronomy has painted an extraordinary picture of the Galactic interstellar medium, which displays an amazing organization and structuring of matter from very hot ultra-diluted media to very cold denser milieus considered as the cradles of stars. In these latter environments, the discovery of a chemical diversity of molecules, including those associated with precursors to life itself, immediately brought to light the question of the mechanisms leading to their formation and persistence at temperatures as low as 10 K. The chemical networks developed to understand telescope observations required a great deal of physical and chemical parameters relevant to interstellar conditions, particularly at very low temperatures. These included the rate coefficients of thousands of gas phase chemical reactions. Such data were missing in the 1970s, when the very first molecular discoveries were made. Then, in the early eighties, it was realized that uniform supersonic flows were ideal chemical reactors to study reaction kinetics at interstellar temperatures.Uniform Supersonic Flows in Chemical Physics reviews 40 years of use of such reactors, the so-called CRESU machines, focusing on major breakthroughs brought to chemical physics, physical chemistry, astrophysics and astrochemistry by the various experiments carried out with such apparatuses. The wealth of kinetic data at very low temperatures provided new targets for the predictions of theory, with new theoretical methods being developed to explain observed behavior. The first two chapters describe the physical context of reaction kinetics at very low temperatures and the requirements needed to run optimally such uniform supersonic flows, together with a historical perspective. Chapters 3 to 9 describe the various families of chemical processes that have been explored within the CRESU technique, highlighting major advances and offering an exhaustive up-to-date bibliography. Chapters 10 and 11 show how these experimental results have helped in improving the ideas in quantum chemistry and interstellar modeling. The book concludes with an overview of potential perspectives and new routes to be explored.