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Three Dimensional Collision Induced Vibrational Transitions In Homogeneous Diatomic Molecules

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Three Dimensional Collision Induced Vibrational Transitions In Homogeneous Diatomic Molecules

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Author : C. Frederick Hansen
language : en
Publisher:
Release Date : 1970

Three Dimensional Collision Induced Vibrational Transitions In Homogeneous Diatomic Molecules written by C. Frederick Hansen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Collisions (Nuclear physics) categories.

The one-dimensional, semiclassical theory of vibrational transitions in diatomic molecules is extended to three dimensions. Simple exponential interaction potentials are assumed and are spherically averaged to determine the collision trajectory that defines the perturbation. For use over the range of temperatures where small perturbation theory applies, fully analytic approximations are derived for the cross sections, the rate coefficients, and the relaxation rates. Vibrational transitions (predominantly changes of one vibrational level) are found to be accompanied by simultaneous rotational transitions (predominantly changes of zero and two rotational levels) with the result that vibrational transition rates are increased by 50 percent or more. The three-dimensional theory enables one to determine both the gradient and the magnitude of the potential, whereas only the gradient can be determined with one-dimensional theory. The theory can be fit to data reasonably well by appropriate choice of an "effective" interaction potential. This potential is considerably steeper and of shorter range than potentials appropriate for scattering. This is consistent with the concept that many interaction potentials exist for molecules, just as for atoms. We conclude that the steeper inner potentials are primarily responsible for vibrational transitions, whereas the outer potentials are primarily responsible for scattering.

Three Dimensional Collision Induced Vibrational Transitions In Homogeneous Diatomic Molecules With List Of References

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Author :
language : en
Publisher:
Release Date : 1970

Three Dimensional Collision Induced Vibrational Transitions In Homogeneous Diatomic Molecules With List Of References written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1991

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.

Monthly Catalog Of United States Government Publications

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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1971

Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Government publications categories.

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.

Nasa Technical Report

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Author :
language : en
Publisher:
Release Date : 1970

Nasa Technical Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Aerodynamics categories.

Monthly Catalog Of United States Government Publications

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Author :
language : en
Publisher:
Release Date :

Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Government publications categories.

Monthly Catalog Of United States Government Publications Cumulative Index

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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1976

Monthly Catalog Of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with United States categories.