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Bulk Materials Analysis Using High-Energy Positron Beams
Stephen C. Glade, P. Asoka‐Kumar, T.G. Nieh, Philip A. Sterne, Brian D. Wirth, Reinhold H. Dauskardt, Katharine M. Flores, D. Suh, George Robert Odette
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Abstract
This article reviews some recent materials analysis results using high-energy positron beams at Lawrence Livermore National Laboratory. We are combining positron lifetime and orbital electron momentum spectroscopic methods to provide electron number densities and electron momentum distributions around positron annihilation sites. Topics covered include: correlation of positron annihilation characteristics with structural and mechanical properties of bulk metallic glasses, compositional studies of embrittling features in nuclear reactor pressure vessel steel, pore characterization in Zeolites, and positron annihilation characteristics in alkali halides.