Last edited by Fenrigrel
Tuesday, July 21, 2020 | History

3 edition of Defect Processes Induced by Electronic Excitation in Insulators (Directions in Condensed Matter Physics) found in the catalog.

Defect Processes Induced by Electronic Excitation in Insulators (Directions in Condensed Matter Physics)

by Noriaki Itoh

  • 290 Want to read
  • 18 Currently reading

Published by World Scientific Pub Co Inc .
Written in English

    Subjects:
  • Condensed matter physics (liquids & solids),
  • Electrical Properties Of Materials,
  • Science/Mathematics,
  • Electricity,
  • Technology,
  • Technology & Industrial Arts

  • The Physical Object
    FormatHardcover
    Number of Pages550
    ID Numbers
    Open LibraryOL9497873M
    ISBN 109971503514
    ISBN 109789971503512

    Abstract To extract electronic excitation effects from the synergistic damage processes, we have studied photon-irradiation effects on insulators under heavy ion irradiation. Copper ions (Cu 2+) of 3 MeV energy at an ion flux of 2 μA/cm 2 and eV photons at J/cm 2 pulse were used to amorphous SiO 2 (KU-1) and spinel MgO(Al 2 O 3. Order Number Electron beam decompositions of ionic crystals Dou, Qun, Ph.D. Iowa State University, UMI Ann Arbor, MI Author: Qun Dou.

    Nondestructive inspection of electrical insulators subjected to the high electrical stress and environmental damage is fundamental for reliable operation of a transmission lines. The breakage and defect of the insulator have great influence on the safe of transmission lines, and insulator defect detection with difference types is a complex work. This paper proposed an insulator defect Cited by: 2. Excitation, in physics, the addition of a discrete amount of energy (called excitation energy) to a system—such as an atomic nucleus, an atom, or a molecule—that results in its alteration, ordinarily from the condition of lowest energy (ground state) to one of higher energy (excited state). In.

    16 D.A. Wnght added at a positive ion site, w2, or subtracted at a negative ion site, w. In all cases the estimation of a, and a2 has been made taking the observed value of KO which gives (a, + us) according to the formula Then we take the observed ratio alia2 for the free ions and determine the values of a, and u2 from.,/a2 and a, + a2. The values found in this way are shown in theCited by: Relaxations of Excited States and Photo-Induced Structural Phase Transitions are the topics discussed during the 19th Taniguchi Symposium. Here, 27 worldwide renowned physicists and chemists report recent topics related to this quite new theme from the view points of .


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Defect Processes Induced by Electronic Excitation in Insulators (Directions in Condensed Matter Physics) by Noriaki Itoh Download PDF EPUB FB2

A brief outline of defect processes induced by electronic excitation in solids is given. It is pointed out that self-trapping of holes and excitons plays the major role on the defect processes. Several aspects of the defect processes, including those in the bulk, interfaces and surfaces of solids are briefly described.

It is pointed out that the concept and experimental techniques derived from Author: Noriaki Itoh. Get this from a library. Defect processes induced by electronic excitation in insulators. [Noriaki Itoh;] -- This book is a collection of five papers on defect processes.

Chapter I provides an overview of the subject matter. Chapter II describes the theoretical background and theoretical developments for. Defect Processes Induced by Electronic Excitation in Insulators Not Available. Publication: Defect Processes Induced by Electronic Excitation in Insulators.

Edited by ITOH N. Published by World Scientific Publishing Co. Pte. Ltd. Pub Date: DOI: / Bibcode: .I full text sources. Cited by: ISBN: OCLC Number: Language Note: English. Description: vii, pages: illustrations ; 23 cm.

Contents: Overview of defect processes induced by electronic excitation in insulators / N. Itoh --Excitonic mechanism of defect formation in alkali halides as spontaneous symmetry breaking / Y.

Kayanuma --Luminescence and self-trapping of excitons in alkali. Series on Directions in Condensed Matter Physics Defect Processes Induced by Electronic Excitation in Insulators, pp. () No Access EXCITONIC MECHANISM OF DEFECT FORMATION IN ALKALI HALIDES AS SPONTANEOUS SYMMETRY BREAKING.

The most characteristic feature of the RE excitation in semiconductors is the drastically different spatial localization of the partners in the energy transfer process: delocalized shallow excitonic or defect bound states that are gateways to the energy transfer from the semiconductor host, and the atomic-like localized 4f states of the RE dopants.

Both experimental and theoretical studies. Materials modification by electronic excitation Electronic excitation is a means to change materials book analyses the impor-tant features ofthe changes induced by electronic excitation,identifies what is critical,and pro-vides a basis from which materials modification can be developed successfully.

Electronic. Electronic excitation by lasers or electron beams can modify the properties of materials. The changes are not just due to heat, nor do they result from the well-known collision dynamics of much radiation damage.

Everyday examples of modification by electronic excitation include photography, and photochromics (such as sunglasses) which change Cited by: Ionization-induced defect formation and amorphization were investigated in x- and z-cut LiNbO3 crystals irradiated with Si and O ions at energies yielding an electronic energy deposition Se close.

The existence of the threshold for ablation or desorption is one of the most frequently remarked features of these processes. Because of the superliner character of the yield-fluence relation in ablation, it is not always clear whether the threshold is a manifestation of a critical process, a multiphoton excitation process, or simply of strong fluence dependence in the primary by: Sputtering by electronic processes is noted for many other insulators and they often show a preferential loss of one element until the non-sputtered component forms a surface barrier.

Some guide lines are considered to help predict which materials may decompose by electronic excitation. The mechanisms differ from those in alkali halides but Cited by: 3.

Defect-related relaxation processes in irradiated rare gas solids Article (PDF Available) in Radiation Effects and Defects in Solids () January with 34 Reads. Volume 5-Defect Processes Induced by Electronic Excitation in Insulators.

Edited By: N Itoh (Nagoya) Volume 4-Directions in Chaos — Volume 2. Edited By: B-L Hao (ITP, Beijing) Volume 3-Directions in Chaos — Volume 1. Edited By: B-L Hao (ITP, Beijing) Volume 2-Ionic Solids at High Temperatures.

Edited By: A M Stoneham (Harwell Labs). We demonstrate evidence of selective laser-induced desorption of ground state Br(2P3/2) and spin–orbit excited state Br(2P1/2) atoms from KBr single crystals following eV irradiation. Defect Processes Induced by Electronic Excitation of Insulators, edited by N.

Itoh (World Scientific, Singapore, Materials Modification by Cited by: Brushless excitation. Brushless excitation creates the magnetic flux on the rotor of electrical machines without the need of carbon brushes.

It is typically used for reducing the regular maintenance costs and to reduce the risk of brush-fire. It was developed in the s, as a result of the advances in high-power semiconductor devices. I developed theories of the mechanisms of photo-induced processes at ionic surfaces and models of self-trapped excitons and hole polarons in solids and at surfaces, especially in relation to ultrafast processes induced by electronic excitation.

During the last several years I was strongly involved in the development of theoretical models of. This book surveys the theory of defects in solids, concentrating on the electronic structure of point defects in insulators and semiconductors.

The relations between different approaches are described, and the predictions of the theory compared critically with experiment. The physical assumptions and approximations are : Paperback.

STUDIES of the induced conductivity in insulators due to X-rays1 are difficult owing to the extremely low values to be measured, and hitherto have been made primarily with condenser by: Tanimura, Defect Processes Induced by Electronic Excitation in Insulators, edited by N.

Itoh (World Scientific, Singapore, ), Chap. 5, and references cited therein. Google Scholar Cited by: Prof Alexander Shluger Professor of Physics especially in relation to ultrafast processes induced by electronic excitation.

During the last several years I was strongly involved in the development of theoretical models of atomic force microscopy on ionic surfaces. I am a co-author of one book and a co-editor of another book on. However, most stimulated surface processes do share a common physics: initial electronic excitation, localization of the excitation, and conversion of electronic energy into nuclear kinetic energy.

It is the rich variation of this theme which makes the field so interesting and fruitful.Table of Contents 1. Introduction.- The Ground State of Many-Body Systems and the Modes of Excitation.- Electronic Excitation in Insulators and the Wannier-Mott Exciton.- The Frenkel Exciton.- The General Case.- Effective Mass Approximation.- The Role of Spin.- Interplay of Spin-Orbit and Exchange Interactions.- Davydov Splitting.- Charge Transfer.X.

Ding and J. C. Wright, Chem. Phys. Lett.(). "Laser Induced Fluorescence Line Narrowing in Buckminsterfullerene Hydroquinone Crystals." Def. and Amorph. Mat. 12, (). "Laser Spectroscopy of Point Defect Equilibria in Insulators and Transitions of Insulators to Superionic State." "Defect Processes Involving.