Reactive Scattering For H H2 And H H2 And Its Isotopologues

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Reactive scattering for H- + H2 and H+ + H2 and its isotopologues

Author : Dequan Wang
Publisher : Logos Verlag Berlin GmbH
Page : 139 pages
File Size : 55,9 Mb
Release : 2016-07-15
Category : Science
ISBN : 9783832542955

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Reactive scattering for H- + H2 and H+ + H2 and its isotopologues by Dequan Wang Pdf

The reactive scattering for H- + H2 and H+ + H2 and its isotopologues were investigated using different methods. The studies aimed at providing insights into elementary reactions, and go beyond these to more complexchemical reactions. By comparison of the reaction probabilities of H+ + H2 using adiabatic and non-adiabatic methods, it was found that, at low collision energies, the reaction preferentially occurs adiabatically, but at higher collision energies non-adiabatic effects should be taken into account. For H- + H2 and its isotopologues, we can see that, at low collision energies, the reaction probabilities and reaction cross section using SM-PES and AY-PES are very similar but different from PS-PES. The reaction cross sections investigated with quasi-classical trajectoriesare higher than those calculated with quantum wavepackets. For the collision H- and D- with HD, the main reaction path ways are different with the different collision energies.

The Theory of Chemical Reaction Dynamics

Author : D.C. Clary
Publisher : Springer Science & Business Media
Page : 420 pages
File Size : 43,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400946187

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The Theory of Chemical Reaction Dynamics by D.C. Clary Pdf

The calculation of cross sections and rate constants for chemical reactions in the gas phase has long been a major problem in theoretical chemistry. The need for reliable and applicable theories in this field is evident when one considers the significant recent advances that have been made in developing experimental techniques, such as lasers and molecular beams, to probe the microscopic details of chemical reactions. For example, it is now becoming possible to measure cross sections for chemical reactions state selected in the vibrational rotational states of both reactants and products. Furthermore, in areas such as atmospheric, combustion and interstellar chemistry, there is an urgent need for reliable reaction rate constant data over a range of temperatures, and this information is often difficult to obtain in experiments. The classical trajectory method can be applied routinely to simple reactions, but this approach neglects important quantum mechanical effects such as tunnelling and resonances. For all these reasons, the quantum theory of reactive scattering is an area that has received considerable attention recently. This book describes the proceedings of a NATO Advanced Research Workshop held at CECAM, Orsay, France in June, 1985. The Workshop concentrated on a critical examination and discussion of the recent developments in the theory of chemical reaction dynamics, with particular emphasis on quantum theories. Several papers focus on exact theories for reactions.

Nuclear Science Abstracts

Author : Anonim
Publisher : Unknown
Page : 1216 pages
File Size : 54,7 Mb
Release : 1976-06
Category : Nuclear energy
ISBN : PSU:000047758964

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Nuclear Science Abstracts by Anonim Pdf

Supercomputer Algorithms for Reactivity, Dynamics and Kinetics of Small Molecules

Author : Antonio Laganà
Publisher : Springer Science & Business Media
Page : 436 pages
File Size : 47,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400909458

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Supercomputer Algorithms for Reactivity, Dynamics and Kinetics of Small Molecules by Antonio Laganà Pdf

The need for accurate computational procedures to evaluate detailed properties of gas phase chemical reactions is evident when one considers the wealth of information provided by laser, molecular beam and fast How experiments. By stressing ordinary scalar computers to their limiting performance quantum chemistry codes can already provide sufficiently accurate estimates of the stability of several small molecules and of the reactivity of a few elementary processes. However, the accurate characterization of a reactive process, even for small systems, is so demanding in terms of computer resources to make the use of supercomputers having vector and parallel features unavoidable. Sometimes to take full advantage from these features all is needed is a restructure of those parts of the computer code which perform vector and matrix manipulations and a parallel execution of its independent tasks. More often, a deeper restructure has to be carried out. This may involve the problem of choosing a suitable computational strategy or the more radical alternative of changing the theoretical treatment. There are cases, in fact, where theoretical approaches found to be inefficient on a scalar computer exhibit their full computational strength on a supercomputer.

ERDA Energy Research Abstracts

Author : United States. Energy Research and Development Administration
Publisher : Unknown
Page : 1320 pages
File Size : 46,7 Mb
Release : 1976
Category : Power resources
ISBN : STANFORD:36105013133421

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ERDA Energy Research Abstracts by United States. Energy Research and Development Administration Pdf

Scientific and Technical Aerospace Reports

Author : Anonim
Publisher : Unknown
Page : 1282 pages
File Size : 50,5 Mb
Release : 1982
Category : Aeronautics
ISBN : UIUC:30112102359566

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Scientific and Technical Aerospace Reports by Anonim Pdf

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Energy Research Abstracts

Author : Anonim
Publisher : Unknown
Page : 852 pages
File Size : 46,5 Mb
Release : 1990
Category : Power resources
ISBN : MSU:31293010869307

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Energy Research Abstracts by Anonim Pdf

Theory of Molecular Collisions

Author : Gabriel G Balint-Kurti,Alexander Palov
Publisher : Royal Society of Chemistry
Page : 282 pages
File Size : 50,6 Mb
Release : 2015-07-02
Category : Science
ISBN : 9781782620198

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Theory of Molecular Collisions by Gabriel G Balint-Kurti,Alexander Palov Pdf

Almost 100 years have passed since Trautz and Lewis put forward their collision theory of molecular processes. Today, knowledge of molecular collisions forms a key part of predicting and understanding chemical reactions. This book begins by setting out the classical and quantum theories of atom-atom collisions. Experimentally observable aspects of the scattering processes; their relationship to reaction rate constants and the experimental methods used to determine them are described. The quantum mechanical theory of reactive scattering is presented and related to experimental observables. The role of lasers in the measurement and analysis of reactive molecular collisions is also discussed. Written with postgraduates and newcomers to the field in mind, mathematics is kept to a minimum, and readers are guided to appendices and further reading to gain a deeper understanding of the mathematics involved.

ERDA Energy Research Abstracts

Author : United States. Energy Research and Development Administration. Technical Information Center
Publisher : Unknown
Page : 1680 pages
File Size : 52,7 Mb
Release : 1977
Category : Force and energy
ISBN : MSU:31293010867178

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ERDA Energy Research Abstracts by United States. Energy Research and Development Administration. Technical Information Center Pdf

ERDA Research Abstracts

Author : United States. Energy Research and Development Administration
Publisher : Unknown
Page : 716 pages
File Size : 41,7 Mb
Release : 1976
Category : Power resources
ISBN : PSU:000018894929

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ERDA Research Abstracts by United States. Energy Research and Development Administration Pdf

The Chemical Dynamics and Kinetics of Small Radicals

Author : Ketian Liu,Albert Wagner
Publisher : World Scientific
Page : 616 pages
File Size : 45,9 Mb
Release : 1996-01-19
Category : Science
ISBN : 9789814317177

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The Chemical Dynamics and Kinetics of Small Radicals by Ketian Liu,Albert Wagner Pdf

This book highlights recent progress in the chemistry of radicals. Developments include the growing use of lasers to generate radicals, the application of lasers to provide state, angular, polarization, energy and real-time resolution in kinetics and dynamics experiments, the development of theories for handling the reactions of radicals, and the simulation of the reaction dynamics of increasingly larger systems for direct comparison to experimental results. The book emphasizes the increasing interaction between experimental dynamics, kinetics and theory. It is appropriate for chemistry graduate students and researchers about to enter the field. However, the discussions of some topics progress to a more advanced level so that even an expert will find the book useful.

The Chemical Dynamics and Kinetics of Small Radicals

Author : Kopin Liu,Albert Wagner
Publisher : World Scientific
Page : 1100 pages
File Size : 41,6 Mb
Release : 1996-01-19
Category : Science
ISBN : 9789814502047

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The Chemical Dynamics and Kinetics of Small Radicals by Kopin Liu,Albert Wagner Pdf

'0Keywords:Kinetics;Chemical Dynamics;Molecular Beams;Radical Reactions;Photodissociation;Energy Transfer;Half-Collision Studies;Stereodynamics;Transition State Theory;Alignment Effects;Free Radical;Transition State;Potential Energy Surface;Hund''s Case;Doppler Effect;Orbital Alignment;Differential Cross Section;Vector Correlation;Collision ComplexCollision Complex'

ERDA Energy Research Abstracts

Author : Anonim
Publisher : Unknown
Page : 640 pages
File Size : 52,7 Mb
Release : 1977
Category : Electronic
ISBN : MINN:31951000869485Y

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ERDA Energy Research Abstracts by Anonim Pdf

Physics Briefs

Author : Anonim
Publisher : Unknown
Page : 1420 pages
File Size : 42,6 Mb
Release : 1993
Category : Physics
ISBN : UOM:39015027828634

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Physics Briefs by Anonim Pdf