DOE-HDBK-1017/2-93THERMAL AND DISPLACEMENT SPIKES DUE TO IRRADIATIONPlant MaterialsSummaryThe important information in this chapter is summarized below.Thermal and Displacement Spikes Due To Irradiation SummaryThermal spikes occur when radiation deposits energy in the form of a knock-on,which in turn, transfers its excess energy to the surrounding atoms in the form ofvibrational energy (heat).Displacement spikes occur when many atoms in a small area are displaced by aknock-on.The presence of many displacement spikes changes the properties of the metalbeing irradiated, such as increasing hardness and decreasing ductility.MS-05Page 36Rev. 0
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