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Author : W. E. Roake
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.3/5 (91 download)
Download or read book Irradiation Alteration of Uranium Dioxide written by W. E. Roake and published by . This book was released on 1962 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Henry C. Quigley
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (91 download)
Download or read book Irradiation of Uranium Dioxide Fuel Tubes in the VBWR written by Henry C. Quigley and published by . This book was released on 1963 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (873 download)
Download or read book Radiation-Induced Decomposition of U(VI) Alteration Phases of UO2 written by and published by . This book was released on 2005 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: U{sup 6+} phases are common alteration products of spent nuclear fuel under oxidizing conditions, and they may potentially incorporate actinides, such as long-lived 239Pu and 237Np, delaying their transport to the biosphere. In order to evaluate the ballistic effects of [alpha]-decay events on the stability of the U{sup 6+}-phases, they report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) for six different structures of U{sup 6+}-phases: uranophane, kasolite, boltwoodite, saleeite, carnotite, and liebigite. The target uranyl-minerals were characterized by powder X-ray diffraction and identification confirmed by SAED in TEM. The TEM observation revealed no initial contamination of uraninite in these U{sup 6+} phases. All of the samples were irradiated with in situ TEM observation using 1.0 MeV Kr{sup 2+} in the IVEM (intermediate-voltage electron microscope) at the IVEM-Tandem Facility of Argonne National Laboratory. The ion flux was 6.3 x 1011 ions/cm2/sec. The specimen temperatures during irradiation were 298 and 673 K, respectively. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to nanocrystals of UO2 at doses as low as 0.006 dpa. The cumulative doses for the pure U{sup 6+}-phases, e.g., uranophane, at 0.1 and 1 m.y. are calculated to be 0.009 and 0.09 dpa using SRIM2003. However, with the incorporation of 1 wt.% 239Pu, the calculated doses reach 0.27 and ≈ 1.00 dpa in ten thousand and one hundred thousand years, respectively. Under oxidizing conditions, multiple cycles of radiation-induced decomposition to UO2 followed by alteration to U6-phases should be further investigated to determine the fate of trace elements that may have been incorporated in the U{sup 6+}-phases.
Author : R. C. Ewing
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)
Download or read book Radiation-Induced Decomposition of U(vi) Alteration Phases of UO2 written by R. C. Ewing and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: U{sup 6+}-phases are common alteration products of spent nuclear fuel under oxidizing conditions, and they may potentially incorporate actinides, such as long-lived {sup 239}Pu and {sup 237}Np, delaying their transport to the biosphere. In order to evaluate the ballistic effects of {alpha}-decay events on the stability of the U{sup 6+}-phases, we report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) for six different structures of U{sup 6+}-phases: uranophane, kasolite, boltwoodite, saleeite, carnotite, and liebigite. The target uranyl-minerals were characterized by powder X-ray diffraction and identification confirmed by SAED (selected area electron diffraction) in TEM (transmission electron microscopy). The TEM observation revealed no initial contamination of uraninite in these U{sup 6+} phases. All of the samples were irradiated with in situ TEM observation using 1.0 MeV Kr{sup 2+} in the IVEM (intermediate-voltage electron microscope) at the IVEM-Tandem Facility of Argonne National Laboratory. The ion flux was 6.3 x 10{sup 11} ions/cm{sup 2}/sec. The specimen temperatures during irradiation were 298 and 673 K, respectively. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to nanocrystals of UO{sub 2} at doses as low as 0.006 dpa. The cumulative doses for the pure U{sup 6+}-phases, e.g., uranophane, at 0.1 and 1 million years (m.y.) are calculated to be 0.009 and 0.09 dpa using SRIM2003. However, with the incorporation of 1 wt.% {sup 239}Pu, the calculated doses reach 0.27 and {approx}1.00 dpa in ten thousand and one hundred thousand years, respectively. Under oxidizing conditions, multiple cycles of radiation-induced decomposition to UO{sub 2} followed by alteration to U{sup 6+}-phases should be further investigated to determine the fate of trace elements that may have been incorporated in the U{sup 6+}-phases.
Author : J. Belle
Publisher :
ISBN 13 :
Total Pages : 750 pages
Book Rating : 4.3/5 (91 download)
Download or read book Uranium Dioxide written by J. Belle and published by . This book was released on 1961 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Guon
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book Gaseous Chemical Treatment of Irradiated Uranium Dioxide written by J. Guon and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tianyi Chen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (874 download)
Download or read book A Study of UO2 Grain Boundary Structure and Thermal Resistance Change Under Irradiation Using Molecular Dynamics Simulations written by Tianyi Chen and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Our study is focused on the behavior of grain boundaries in uranium dioxide system under irradiation conditions. The research can be seen as two parts: the study of interaction of the grain boundary and the damage cascade, and the calculation of Kapitza resistance of grain boundaries. The connection between these two parts lies in that damage cascades bring in changes in the structure and other properties of grain boundaries, and inevitably the Kapitza resistance of the grain boundary changes as well. For the first part, we studied interactions of grain boundaries and damage cascades in uranium dioxide system by simulating two types of bombardments: one direct bombardment into a grain boundary leading to ballistic-collision-mediated interface mixing; the other bombardment is in the close vicinity of a grain boundary causing interface biased defect migration. We found that more defects are trapped by the grain boundary followed by the first type of bombardment, resulting in enhanced grain boundary energy. By comparing with the second type of bombardment, we are able to reveal the mechanisms of the interaction between defects and grain boundaries. For the second part, we employed the non-equilibrium molecular dynamics method to calculate the Kapitza resistance of different coincident site lattice boundaries with or without defects loaded, and later we found that a universal positive correlation between the Kapitza resistance and the grain boundary energy can be well established, regardless of the cause of boundary energy changes. Our study provides a deeper understanding of the Kapitza resistance of the grain boundary and its evolutions under irradiation, which benefits multi-scale modeling of uranium dioxide thermal properties under extreme radiation conditions as well as experimental studies of fuel material thermal properties. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151387
Author : J. A. Christensen
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book Thermal Expansion and Change in Volume on Melting for Uranium Dioxide written by J. A. Christensen and published by . This book was released on 1962 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. L. Bates
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.3/5 (91 download)
Download or read book Irradiation Effects in Uranium Dioxide Single Crystal written by J. L. Bates and published by . This book was released on 1962 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuping Wu
Publisher : Elsevier
ISBN 13 : 0128104163
Total Pages : 452 pages
Book Rating : 4.1/5 (281 download)
Download or read book Metal Oxides in Energy Technologies written by Yuping Wu and published by Elsevier. This book was released on 2018-10-05 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxides in Energy Technologies provides, for the first time, a look at the wide range of energy applications of metal oxides. Topics covered include metal oxides materials and their applications in batteries, supercapacitors, fuel cells, solar cells, supercapacitors, and much more. The book is written by an experienced author of over 240 papers in peer-reviewed journals who was also been recognized as one of Thomson Reuter’s “World’s Most Influential Scientific Minds in 2015. This book presents a unique work that is ideal for academic researchers and engineers. Presents an authoritative overview on metal oxides in energy technologies as written by an expert author who has published extensively in the area Offers up-to-date coverage of a large, rapidly growing and complex literature Focuses on applications, making it an ideal resource for those who want to apply this knowledge in industry
Author : Oak Ridge National Laboratory
Publisher :
ISBN 13 :
Total Pages : 498 pages
Book Rating : 4.3/5 (91 download)
Download or read book Meeting on Characterization of Uranium Dioxide written by Oak Ridge National Laboratory and published by . This book was released on 1961 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Belle
Publisher :
ISBN 13 :
Total Pages : 744 pages
Book Rating : 4.:/5 (319 download)
Download or read book Uranium Dioxide written by J. Belle and published by . This book was released on 1961 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. A. Christensen
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.3/5 (91 download)
Download or read book Irradiation Effects on Uranium Dioxide Melting written by J. A. Christensen and published by . This book was released on 1962 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Belle
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.3/5 (91 download)
Download or read book Resume of Uranium Dioxide Oxide Data written by J. Belle and published by . This book was released on 1957 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 964 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Z. M. Shapiro
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.3/5 (91 download)
Download or read book Resum©Øe of Uranium Dioxide Oxide Data written by Z. M. Shapiro and published by . This book was released on 1955 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward Mark Butler
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (358 download)
Download or read book Interdiffusion Between Uranium Dioxide and Uranium-plutonium Dioxide During Irradiation written by Edward Mark Butler and published by . This book was released on 1972 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
