Structural Change of Graphite During Electron Irradiation
نویسندگان
چکیده
منابع مشابه
Transmission Electron Microscopy Study of Graphite Underin Situion Irradiation Original Citation Transmission Electron Microscopy Study of Graphite under in Situ Ion Irradiation
Graphite is employed as a moderator and structural component in 18 of the United Kingdom’s fleet of Magnox and Advanced Gas-cooled Reactors (AGRs). During the operational lifetime of a reactor, graphite undergoes complex physical and mechanical property changes including dimensional modification, owing to the effects of temperature, oxidation and irradiation-induced atomic displacements. In ord...
متن کاملStructural Preablation Dynamics of Graphite Observed by Ultrafast Electron Crystallography
Fabrizio Carbone, Peter Baum, Petra Rudolf, and Ahmed H. Zewail Physical Biology Center for Ultrafast Science & Technology, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena California, 91125, USA Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, NL-9747AG Groningen, The Netherlands (Received 15 October 2007; published ...
متن کاملElectron beam irradiation method to change polypropylene application: Rheology and thermomechanical properties
Irradiation of polymers is one of the most effective and economical methods for modifying their properties and for changing their applications. In this study, an extrusion grade polypropylene (PP) was treated by electron beam irradiation to produce a PP suitable for injection molding. Irradiation was carried out at different doses (0-80 kGy) under atmosphere air and at ambient temperature. Melt...
متن کاملPrimary structural dynamics in graphite
The structural dynamics of graphite and graphene are unique, because of the selective coupling between electron and lattice motions and hence the limit on electric and electro-optic properties. Here, we report on the femtosecond probing of graphite films (1–3 nm) using ultrafast electron crystallography in the transmission mode. Two time scales are observed for the dynamics: a 700 fs initial de...
متن کاملComment on "Structural preablation dynamics of graphite observed by ultrafast electron crystallography".
By means of time-resolved electron crystallography, we report direct observation of the structural dynamics of graphite, providing new insights into the processes involving coherent lattice motions and ultrafast graphene ablation. When graphite is excited by an ultrashort laser pulse, the excited carriers reach their equilibrium in less then one picosecond by transferring heat to a subset of st...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: MRS Proceedings
سال: 1992
ISSN: 0272-9172,1946-4274
DOI: 10.1557/proc-279-67