Radiationless Processes

Radiationless Processes PDF Author: Baldassare Di Bartolo
Publisher: Springer Science & Business Media
ISBN: 1461331749
Category : Science
Languages : en
Pages : 555

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Book Description
This book presents an account of the NATO Advanced Study Institute on "Radiationless Processes," held in Erice, Italy, from November 18 to December 1, 1979. This meeting was organized by the International School of Atomic and Molecular Spectroscopy of the "Ettore Majorana" Centre for Scientific Culture. The objective of the Institute was to formulate a comprehensive treatment of the various processes by which molecules and crystals in excited electronic levels relax nonradiatively to the ground level. A total of 83 participants came from 62 laboratories and 22 nations (Australia, Belgium, Brasil, Canada, Czechoslovakia, France, F. R. Germany, Greece, Hungary, India, Ireland, Israel, Italy, Mexico, The Netherlands, Poland, Portugal, Switzerland, Turkey, United Kingdom, United States, and U.S.S.R.). The secretaries of the Institute were: Velda Goldberg for the scientific aspects and Antonino La Francesca for the administrative aspects of the meeting. Eleven series of lectures for a total of 36 hours were given. Nine "long" seminars and 7 "short" seminars were also presented. In addition, two informal seminars and 2 round-table discussions were held. After an introductory overview of the theory of radiation1ess processes, the Institute dealt firstly with the interaction of electrons with the distribution of vibrational modes in simple molecules, then with the increasingly complex situation found in large lsolated molecules, gnd finally with the coupling of excited electrons with the continuous phonon distribution in insulating solids.

Radiationless Processes

Radiationless Processes PDF Author: Baldassare Di Bartolo
Publisher: Springer Science & Business Media
ISBN: 1461331749
Category : Science
Languages : en
Pages : 555

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Book Description
This book presents an account of the NATO Advanced Study Institute on "Radiationless Processes," held in Erice, Italy, from November 18 to December 1, 1979. This meeting was organized by the International School of Atomic and Molecular Spectroscopy of the "Ettore Majorana" Centre for Scientific Culture. The objective of the Institute was to formulate a comprehensive treatment of the various processes by which molecules and crystals in excited electronic levels relax nonradiatively to the ground level. A total of 83 participants came from 62 laboratories and 22 nations (Australia, Belgium, Brasil, Canada, Czechoslovakia, France, F. R. Germany, Greece, Hungary, India, Ireland, Israel, Italy, Mexico, The Netherlands, Poland, Portugal, Switzerland, Turkey, United Kingdom, United States, and U.S.S.R.). The secretaries of the Institute were: Velda Goldberg for the scientific aspects and Antonino La Francesca for the administrative aspects of the meeting. Eleven series of lectures for a total of 36 hours were given. Nine "long" seminars and 7 "short" seminars were also presented. In addition, two informal seminars and 2 round-table discussions were held. After an introductory overview of the theory of radiation1ess processes, the Institute dealt firstly with the interaction of electrons with the distribution of vibrational modes in simple molecules, then with the increasingly complex situation found in large lsolated molecules, gnd finally with the coupling of excited electrons with the continuous phonon distribution in insulating solids.

Studies of Radiationless Processes in Molecules Prepared in a Molecular Beam

Studies of Radiationless Processes in Molecules Prepared in a Molecular Beam PDF Author: David M. Lubman
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 370

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Book Description


Polymer Photodegradation

Polymer Photodegradation PDF Author: J.F. Rabek
Publisher: Springer Science & Business Media
ISBN: 9401112746
Category : Technology & Engineering
Languages : en
Pages : 679

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Book Description
During the last two decades, the production of polymers and plastics has been increasing rapidly. In spite of developing new polymers and polymeric materials, only 40~60 are used commercially on a large scale. It has been estimated that half of the annual production of polymers is employed outdoors. The photochemical instability of most polymers limits their outdoor application as they are photodegraded quickly over periods from months to a few years. To the despair of technologists and consumers alike, photodegradation and environmental ageing of polymers occur much faster than can be expected from knowledge collected in laboratories. In order to improve polymer photostability there has been a very big effort during the last 30 years to understand the mechanisms involved in photodegradation and environmental ageing. This book represents the author's attempt, based on his 25 years' experience in research on photodegradation and photo stabilization, to collect and generalize a number of available data on the photodegradation of polymers. The space limitation and the tremendous number of publications in the past two decades have made a detailed presentation of all important results and data difficult. The author apologizes to those whose work has not been quoted or widely presented in this book. Because many published results are very often contradictory, it has been difficult to present a fully critical review of collected knowledge, without antagonizing authors. For that reason, all available theories, mechanisms and different suggestions have been presented together, and only practice can evaluate which of them are valid.

Survey of Progress in Chemistry

Survey of Progress in Chemistry PDF Author: Arthur F. Scott
Publisher: Elsevier
ISBN: 1483225097
Category : Science
Languages : en
Pages : 303

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Book Description
Survey of Progress in Chemistry, Volume 4 considers the principles common to all chemistry that undergo major developments and modifications, including aqueous solutions, carbanions, stable isotopes, nitrogen fixation, ionizing radiation, and organic compound luminescence. This volume is organized into six chapters. The first chapter surveys first the theories of water and aqueous solutions structure, followed by the evaluation of temperature, pressure, and electrolytes on water. This chapter emphasizes the role of water structure in biological systems. The second chapter covers the generation, capture, mechanism of stabilization, and isomerization of carbanions, while the separation and practical applications of isotopes are examined in the third chapter. The following chapter describes the mechanism of nitrogen fixation by those cells capable of fixing nitrogen. The concluding chapters explore some aspects of the energy transfer process and the formation of intermediate molecular species. These chapters also evaluate the luminescence of organic systems. This book is of value to college chemistry teachers and students.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 748

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Book Description
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.

Photochemistry

Photochemistry PDF Author: D.. Bryce-Smith
Publisher: Royal Society of Chemistry
ISBN: 0851860052
Category : Photochemistry
Languages : en
Pages : 486

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Book Description


Theoretical Solid State Physics

Theoretical Solid State Physics PDF Author: Albert Haug
Publisher: Elsevier
ISBN: 1483159795
Category : Science
Languages : en
Pages : 370

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Book Description
Theoretical Solid State Physics, Volume 2 deals with the electron-lattice interaction and the effect of lattice imperfections. Conductivity, semiconductors, and luminescence are discussed, with emphasis on the basic physical problems and the various phenomena derived from them. The theoretical basis of interaction between electrons and lattices is considered, along with basic concepts of conduction theory, scattering of electrons by imperfections, and radiationless transitions. This volume is comprised of 19 chapters and begins with an overview of the coupling of electrons and the crystal lattice in a solid, followed by a discussion on the conduction phenomena. The reader is then introduced to defects in the crystal lattice and their effects on the distribution and energy spectrum of the electrons as well as the frequency spectrum of the lattice vibrations. Subsequent chapters focus on semiconductors and their conductivity, thermoelectric effects, and effects in a magnetic field; radiative processes; and radiationless transitions. This book will be of interest to physicists and students of solid state physics.

Theoretical Aspects of Laser Radiation and Its Interaction with Atomic and Molecular Systems

Theoretical Aspects of Laser Radiation and Its Interaction with Atomic and Molecular Systems PDF Author:
Publisher:
ISBN:
Category : Laser beams
Languages : en
Pages : 64

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Book Description


Advances in Quantum Chemistry

Advances in Quantum Chemistry PDF Author:
Publisher: Academic Press
ISBN: 0080582419
Category : Science
Languages : en
Pages : 300

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Book Description
Advances in Quantum Chemistry

AFOSR Chemical & Atmospheric Sciences Program Review

AFOSR Chemical & Atmospheric Sciences Program Review PDF Author: United States. Air Force. Directorate of Chemical and Atmospheric Sciences
Publisher:
ISBN:
Category : Atmospheric chemistry
Languages : en
Pages : 236

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Book Description