Engineering Research
Materials Science
Engineering Series
Near-Surface Depth Profiling of Solids by Mono-Energetic Positrons
Description:
This work reflects the wide and fascinating range of fields to which positrons have made important contributions. This covers, in particular, the development of low-energy (eV-keV) beams of essentially mono-energetic positrons, in the late 1960s, which opened the door to an even wider range of fundamental and technological studies: from surface physics to polymer films. In her introduction Professor Ganguly offers some background knowledge on the extent to which positrons have influenced and contributed to work in numerous fields.
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Review from Ringgold Inc., ProtoView:
Physicists explain how beams of positrons—anti-electrons—can be created and used to analyze the interior of solids in materials science, chemistry, and the life sciences. Their topics include designing and constructing a slow positron beam for solid and surface investigations, a low background digital coincidence spectrometer to investigate positron annihilation in flight, depth-resolved positron annihilation studies of silicon and metal silicides, structural studies of nanocrystalline thin palladium films electrochemically doped with hydrogen, defect behavior in yttria-stabilized zirconia nanomaterials studied by positron annihilation techniques, and positron chemistry in polymers.