Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Determination of Stepsize Parameters for Intermolecular Vibrational Energy Transfer
Author: Determination of Stepsize Parameters for Intermolecular Vibrational Energy Transfer. Final Report, May 1, 1987--December 31, 1991
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Intermolecular energy transfer of highly excited polyatomic molecules plays an important role in many complex chemical systems: combustion, high temperature and atmospheric chemistry. By monitoring the relaxation of internal energy we have observed trends in the collisional efficiency for energy transfer as a function of the substrates̀ excitation energy and the complexities of substrate and deactivator. For a given substrate? increases as the deactivators̀ mass increase to -30 amu and then exhibits a nearly constant value; this is due to a mass mismatch between the atoms of the colliders. In a homologous series of substrate molecules (C3-C)? decreases as the number of atoms in the substrate increases; replacing F with H increases?. All substrates, except for CF2Cl2 and CF2HCl below 10,000 cm−1, exhibited that? is independent of energy, i.e. ?E{sub all} is linear with energy. The results are interpreted with a simple model which considers that? is a function of the ocillators energy and its vibrational frequency. Limitations of current approximations used in high temperature unimolecular reactions were evaluated and better approximations were developed. The importance of energy transfer in product yields was observed for the photoactivation of perfluorocyclopropene and the photoproduction of difluoroethyne. 3 refs., 18 figs., 4 tabs.
Scientific and Technical Aerospace Reports
Author: Energy Research Abstracts
Author: Summaries of FY ... Research in the Chemical Sciences
Author: Government Reports Announcements & Index
Author: Government Reports Annual Index
Author: Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1228
Book Description
INIS Atomindex
Author: Unimolecular Kinetics
Author: Publisher: Elsevier
ISBN: 012816218X
Category : Science
Languages : en
Pages : 540
Book Description
Unimolecular Kinetics: Part 2: Collisional Energy Transfer and the Master Equation, Volume 43 in Elsevier’s Comprehensive Molecular Kinetics series, addresses collision energy transfer and the effects it has on gas phase reactions, particularly at low gas density. Such systems include combustion, industrial gas phase processes and atmospheric/environmental processes. The book also discusses The Master Equation to give a good overview of the mechanics underpinning unimolecular kinetics. This new volume will be of interest to researchers investigating gas phase processes which involve unimolecular reactions and the related intermolecular reactions. Discusses collision energy transfer and the effects it has on gas phase reactions Introduces stochastic techniques to energy transfer methods, allowing for an extension of the unimolecular theory beyond simple molecular dissociation Draws an important connection between detailed reaction dynamic studies and the rate of coefficient determination
Photochemistry
Author: D Bryce-SmithPublisher: Royal Society of Chemistry
ISBN: 1847554679
Category : Science
Languages : en
Pages : 690
Book Description
The breadth of scientific and technological interests in the general topic of photochemistry is truly enormous and includes, for example, such diverse areas as microelectronics, atmospheric chemistry, organic synthesis, non-conventional photoimaging, photosynthesis, solar energy conversion, polymer technologies, and spectroscopy. This Specialist Periodical Report on Photochemistry aims to provide an annual review of photo-induced processes that have relevance to the above wide-ranging academic and commercial disciplines, and interests in chemistry, physics, biology and technology. In order to provide easy access to this vast and varied literature, each volume of Photochemistry comprises sections concerned with photophysical processes in condensed phases, organic aspects which are sub-divided by chromophore type, polymer photochemistry, and photochemical aspects of solar energy conversion. Volume 34 covers literature published from July 2001 to June 2002. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.