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Author : Qigui Yang
Publisher :
ISBN 13 : 9789180403849
Total Pages : 0 pages
Book Rating : 4.4/5 (38 download)
Download or read book Modelling of Radiation Damage and Positron Annihilation in Metallic Materials written by Qigui Yang and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Race
Publisher : Springer Science & Business Media
ISBN 13 : 3642154395
Total Pages : 309 pages
Book Rating : 4.6/5 (421 download)
Download or read book The Modelling of Radiation Damage in Metals Using Ehrenfest Dynamics written by Christopher Race and published by Springer Science & Business Media. This book was released on 2011-01-04 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomistic simulations of metals under irradiation are indispensable for understanding damage processes at time- and length-scales beyond the reach of experiment. Previously, such simulations have largely ignored the effect of electronic excitations on the atomic dynamics, even though energy exchange between atoms and electrons can have significant effects on the extent and nature of radiation damage. This thesis presents the results of time-dependent tight-binding simulations of radiation damage, in which the evolution of a coupled system of energetic classical ions and quantum mechanical electrons is correctly described. The effects of electronic excitations in collision cascades and ion channeling are explored and a new model is presented, which makes possible the accurate reproduction of non-adiabatic electronic forces in large-scale classical molecular dynamics simulations of metals.
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Download or read book Study of Radiation Damage in Metals by Positron Annihilation. [Neutron Irradiation]. written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron annihilation is a sensitive technique for probing defects in metals and it has recently been shown to be a valuable tool for the study of radiation damage. After an introduction to the three basic experimental methods (angular correlation, Doppler broadening, and lifetime measurements), the interaction of positrons with lattice defects is reviewed. Results for the annealing of damage after low temperature irradiation are used to show that positron annihilation has provided new information on annealing kinetics. The role of positron techniques in characterizing complex defect structures resulting from high-temperature neutron irradiation is reviewed and the possible utility of positron annihilation as a nondestructive monitor of property changes is pointed out.
Author : R.P. Agarwala
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038130419
Total Pages : 64 pages
Book Rating : 4.0/5 (381 download)
Download or read book Radiation Damage in Some Refractory Metals written by R.P. Agarwala and published by Trans Tech Publications Ltd. This book was released on 2005-07-01 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Chapter1 of this timely book, radiation damage in vanadium, niobium, molybdenum and tungsten is discussed at the atomic level; treating for instance - third-stage recovery in terms of self-interstitials being mobile traps for - predominantly - vacancies. Higher recovery stages are treated by using various techniques, such as: electrical resistivity, electron microscopy, positron annihilation spectroscopy and computer simulation - thus revealing vacancy-cluster break-up in stage-V and interstitial cluster annealing in stage-VI.
Author : Waldemar Alfredo Monteiro
Publisher : BoD – Books on Demand
ISBN 13 : 953512417X
Total Pages : 464 pages
Book Rating : 4.5/5 (351 download)
Download or read book Radiation Effects in Materials written by Waldemar Alfredo Monteiro and published by BoD – Books on Demand. This book was released on 2016-07-20 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of radiation effects has developed as a major field of materials science from the beginning, approximately 70 years ago. Its rapid development has been driven by two strong influences. The properties of the crystal defects and the materials containing them may then be studied. The types of radiation that can alter structural materials consist of neutrons, ions, electrons, gamma rays or other electromagnetic waves with different wavelengths. All of these forms of radiation have the capability to displace atoms/molecules from their lattice sites, which is the fundamental process that drives the changes in all materials. The effect of irradiation on materials is fixed in the initial event in which an energetic projectile strikes a target. The book is distributed in four sections: Ionic Materials; Biomaterials; Polymeric Materials and Metallic Materials.
Download or read book Radiation Damage Analysis by Positron Annihilation Spectroscopy written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of positron annihilation spectroscopy (PAS) to the characterization and study of defects in metals produced by radiation damage is discussed. The physical basis for the positron annihilation techniques (lifetime, Doppler broadening, angular correlation) is introduced and the techniques briefly described. Some examples of the application of PAS to radiation damage analysis are presented with a view toward elucidating the particular advantages of PAS over more traditional defect characterization techniques.
Author : V. P. Calkins
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.3/5 (91 download)
Download or read book Radiation Damage to Non-metallic Materials written by V. P. Calkins and published by . This book was released on 195? with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. Hautojärvi
Publisher : Springer Science & Business Media
ISBN 13 : 364281316X
Total Pages : 266 pages
Book Rating : 4.6/5 (428 download)
Download or read book Positrons in Solids written by P. Hautojärvi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: In condensed matter initially fast positrons annihilate after having reached equi librium with the surroundings. The interaction of positrons with matter is governed by the laws of ordinary quantum mechanics. Field theory and antiparticle properties enter only in the annihilation process leading to the emergence of energetic photons. The monitoring of annihilation radiation by nuclear spectroscopic methods provides valuable information on the electron-positron system which can directly be related to the electronic structure of the medium. Since the positron is a positive electron its behavior in matter is especially interesting to solid-state and atomic physi cists. The small mass quarantees that the positron is really a quantum mechanical particle and completely different from any other particles and atoms. Positron physics started about 25 years ago but discoveries of new features in its interac tion with matter have maintained continuous interest and increasing activity in the field. Nowadays it is becoming part of the "stock-in-trade" of experimental physics.
Author : John Alexander Bjorkland
Publisher :
ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.:/5 (496 download)
Download or read book The Influence of Radiation Damage on the Positron Annihilation Lifetime in High-polymer Plastics written by John Alexander Bjorkland and published by . This book was released on 1956 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yongqiang Wang
Publisher : MDPI
ISBN 13 : 303936362X
Total Pages : 196 pages
Book Rating : 4.0/5 (393 download)
Download or read book Radiation Damage in Materials written by Yongqiang Wang and published by MDPI. This book was released on 2020-12-28 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complexity of radiation damage effects in materials that are used in various irradiation environments stems from the fundamental particle–solid interactions and the subsequent damage recovery dynamics after the collision cascades, which involves multiple length and time scales. Adding to this complexity are the transmuted impurities that are unavoidable from accompanying nuclear processes. Helium is one such impurity that plays an important and unique role in controlling the microstructure and properties of materials used in fast fission reactors, plasma-facing and structural materials in fusion devices, spallation neutron target designs, actinides, tritium-containing materials, and nuclear waste. Their ultra-low solubility in virtually all solids forces He atoms to self-precipitate into small bubbles that become nucleation sites for further void growth under radiation-induced vacancy supersaturations, resulting in material swelling and high-temperature He embrittlement, as well as surface blistering under low-energy and high-flux He bombardment. This Special Issue, “Radiation Damage in Materials—Helium Effects”, contains review articles and full-length papers on new irradiation material research activities and novel material ideas using experimental and/or modeling approaches. These studies elucidate the interactions of helium with various extreme environments and tailored nanostructures, as well as their impact on microstructural evolution and material properties.
Author : Roger E. Stoller
Publisher : ASTM International
ISBN 13 : 080311477X
Total Pages : 1315 pages
Book Rating : 4.8/5 (31 download)
Download or read book Effects of Radiation on Materials written by Roger E. Stoller and published by ASTM International. This book was released on 1992 with total page 1315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symposium held in Nashville, Tennessee, June 1990. Almost two-thirds of these 91 papers are authored by researchers outside of the US (including information on research in the former USSR, Japan, and Europe). Topics include: current commercial power reactor systems; microstructural characterization
Author : T. Suzuki
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (257 download)
Download or read book Radiation Damage of Polymers Studied by Positron Annihilation (positron and Gamma Ray Irradiation) written by T. Suzuki and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : N. L. Peterson
Publisher :
ISBN 13 :
Total Pages : 430 pages
Book Rating : 4.3/5 (91 download)
Download or read book Radiation Damage in Metals written by N. L. Peterson and published by . This book was released on 1976 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.3/5 (91 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gerhard Brauer
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (748 download)
Download or read book Positron annihilation study of radiation damage in neutron irradiated reactor pressure vessel steels written by Gerhard Brauer and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 742 pages
Book Rating : 4.:/5 (319 download)
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1977 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Energy Research and Development Administration. Technical Information Center
Publisher :
ISBN 13 :
Total Pages : 962 pages
Book Rating : 4.3/5 (129 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
