Characterisation of Radiation Damage by Transmission Electron Microscopy PDF Download
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Author: M.L Jenkins
Publisher: CRC Press
ISBN: 1420034642
Category : Medical
Languages : en
Pages : 233
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Book Description
Characterization of Radiation Damage by Transmission Electron Microscopy details the electron microscopy methods used to investigate complex and fine-scale microstructures, such as those produced by fast-particle irradiation of metals or ion implantation of semiconductors. The book focuses on the methods used to characterize small point-defect clus
Author: M.L Jenkins
Publisher: CRC Press
ISBN: 1420034642
Category : Medical
Languages : en
Pages : 233
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Book Description
Characterization of Radiation Damage by Transmission Electron Microscopy details the electron microscopy methods used to investigate complex and fine-scale microstructures, such as those produced by fast-particle irradiation of metals or ion implantation of semiconductors. The book focuses on the methods used to characterize small point-defect clus
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Book Description
We report that the displacement damage induced in W and W-5 wt.% Re and W-5 wt.% Ta alloys by 2 MeV W+ irradiation to doses 3.3 x 1017 - 2.5 x 1019 W+/m2 at temperatures ranging from 300 to 750 °C has been characterised by transmission electron microscopy. An automated sizing and counting approach based on Image J (a Java-based image processing programme developed at the National Institutes of Health) [1] has been performed for all near-bulk irradiation data. In all cases the damage comprised dislocation loops, mostly of interstitial type, with Burgers vectors b = 1/2 111 (>60%) and b = (1 00). The diameters of loops did not exceed 20 nm with most being d"= 6 nm diameter. The loop number density varied between 1022 and 1023 loops/m3. With increasing irradiation temperature, the loop size distributions shifted towards larger sizes, and there was a substantial decrease in loop number densities. The damage microstructure was less sensitive to dose than to temperature. Under the same irradiation conditions, loop number densities in the W-Re and W-Ta alloys were higher than in pure W but loops were smaller. In grains with normals close to z = 001, loop strings developed in pure W at temperatures e"= 500 °C and doses e" 1.2 dpa, but such strings were not observed in the W-Re or W-Ta alloys. However, in other grain orientations complex structures appeared in all materials and dense dislocation networks formed at higher doses.
Author: M. L. Jenkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Philip Edmondson
Publisher: Butterworth-Heinemann
ISBN: 9780128053164
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Microstructural Characterization of Radiation Effects in Nuclear Materials provides an overview into experimental techniques that can be used to examine those effects (both neutron and charged particle) and can be used by researchers, technicians or students as a tool to introduce them to the various techniques. The need to examine the effect of radiation on materials is becoming increasingly important as nuclear energy is emerging as a growing source of renewable energy. The book opens with a discussion of why it is important to study the effects of radiation on materials and looks at current and future reactor designs and the various constraints faced by materials as a result of those designs. The book also includes an overview of the radiation damage mechanisms. The next section explores the various methods for characterizing damage including transmission electron microscopy, scanning transmission electron microscopy, analytical electron microscopy, electron backscatter diffraction, atom probe tomography, X-ray scattering techniques and ion beam analysis techniques. Lastly, a brief introduction into modelling radiation effects in materials, and the synergy of experiments and modelling to provide an atomic-scale to macro-scale understanding of damage processes is included. Focuses on structural analysis techniques, describing their instrumentation, and introduces specific case studies showcasing the techniques Covers the fundamental aspects of TEM as well as the specific aspects of radiation damage Discusses the characterization of real materials systems that have been neutron irradiated Encompasses sample preparation and statistical analysis into the individual technique chapters Written by well-known experts in the field of materials characterization
Author: Matheus A. Tunes
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Emmanuel Korawinga Nshingabigwi
Publisher:
ISBN:
Category : Ion implantation
Languages : en
Pages : 166
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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A transmission electron microscopy study of radiation damage microstructures in iron and iron-chromium alloys has been performed. This study consisted of both qualitative and quantitative characterization of the dislocation and cavity microstructures, including determination of vacancy/interstitial character and Burgers vectors for dislocation loops and analysis of the cavity morphology. The effects of irradiation temperature, fluence, helium implantation, and chromium content were investigated. Neutron irradiation (iron specimens, 1 dpa, 455 to 1000 K) and triple-beam ion irradiation (Fe-10% Cr specimens, 10 dpa, 725 to 950 K; Fe-10% Cr specimens, 850 K, 0.3 to 100 dpa; and Fe, Fe-5% Cr, Fe-10% Cr specimens, 850 K, 10 dpa) were employed. In the triple-beam ion irradiation procedure, simultaneous bombardment with 4 MeV Fe/sup + +/ ions and energetic He/sup +/ and D2/sup +/ ions was used to simulate the fusion environment (10 at. ppM He/dpa and 41 at. ppM D/dpa). In addition, single-beam 4 MeV Fe/sup + +/ ion irradiations of Fe-10% Cr both with and without pre-injection of helium and deuterium were performed.
Author: Simonpietro Agnello
Publisher: John Wiley & Sons
ISBN: 1119697328
Category : Technology & Engineering
Languages : en
Pages : 500
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Book Description
SPECTROSCOPY FOR MATERIALS CHARACTERIZATION Learn foundational and advanced spectroscopy techniques from leading researchers in physics, chemistry, surface science, and nanoscience In Spectroscopy for Materials Characterization, accomplished researcher Simonpietro Agnello delivers a practical and accessible compilation of various spectroscopy techniques taught and used to today. The book offers a wide-ranging approach taught by leading researchers working in physics, chemistry, surface science, and nanoscience. It is ideal for both new students and advanced researchers studying and working with spectroscopy. Topics such as confocal and two photon spectroscopy, as well as infrared absorption and Raman and micro-Raman spectroscopy, are discussed, as are thermally stimulated luminescence and spectroscopic studies of radiation effects on optical materials. Each chapter includes a basic introduction to the theory necessary to understand a specific technique, details about the characteristic instrumental features and apparatuses used, including tips for the appropriate arrangement of a typical experiment, and a reproducible case study that shows the discussed techniques used in a real laboratory. Readers will benefit from the inclusion of: Complete and practical case studies at the conclusion of each chapter to highlight the concepts and techniques discussed in the material Citations of additional resources ideal for further study A thorough introduction to the basic aspects of radiation matter interaction in the visible-ultraviolet range and the fundamentals of absorption and emission A rigorous exploration of time resolved spectroscopy at the nanosecond and femtosecond intervals Perfect for Master and Ph.D. students and researchers in physics, chemistry, engineering, and biology, Spectroscopy for Materials Characterization will also earn a place in the libraries of materials science researchers and students seeking a one-stop reference to basic and advanced spectroscopy techniques.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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An intense beam of 122 MeV/u (9.3 GeV) 76Ge ions was stopped in aluminum samples at the Coupled Cyclotron Facility at NSCL, MSU. Attempts were made at ORNL to measure changes in material properties by measuring changes in electrical resistivity and microhardness, and by transmission electron microscopy characterization, for defect density caused by radiation damage, as a function of depth and integrated ion flux. These measurements are relevant for estimating damage to components at a rare isotope beam facility.
Author: Frances M. Holland
Publisher:
ISBN:
Category :
Languages : en
Pages :
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