Helium bubble bursting in tungsten

Molecular dynamics simulations have been used to systematically study the pressure evolution and bursting behavior of sub-surface helium bubbles and the resulting tungsten surface morphology. This study specifically investigates how bubble shape and size, temperature, tungsten surface orientation, a...

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Veröffentlicht in:	Journal of applied physics 2013-12, Vol.114 (24)
Hauptverfasser:	Sefta, Faiza, Juslin, Niklas, Wirth, Brian D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adatoms Applied physics BUBBLES Bursting CRATERS Evolution HELIUM Molecular dynamics MOLECULAR DYNAMICS METHOD MORPHOLOGY NANOSCIENCE AND NANOTECHNOLOGY NANOSTRUCTURES ORIENTATION Pinholes Surface stability THICKNESS TUNGSTEN
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container_title	Journal of applied physics
container_volume	114
creator	Sefta, Faiza Juslin, Niklas Wirth, Brian D.
description	Molecular dynamics simulations have been used to systematically study the pressure evolution and bursting behavior of sub-surface helium bubbles and the resulting tungsten surface morphology. This study specifically investigates how bubble shape and size, temperature, tungsten surface orientation, and ligament thickness above the bubble influence bubble stability and surface evolution. The tungsten surface is roughened by a combination of adatom “islands,” craters, and pinholes. The present study provides insight into the mechanisms and conditions leading to various tungsten topology changes, which we believe are the initial stages of surface evolution leading to the formation of nanoscale fuzz.
doi_str_mv	10.1063/1.4860315
format	Article
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subjects	Adatoms Applied physics BUBBLES Bursting CRATERS Evolution HELIUM Molecular dynamics MOLECULAR DYNAMICS METHOD MORPHOLOGY NANOSCIENCE AND NANOTECHNOLOGY NANOSTRUCTURES ORIENTATION Pinholes Surface stability THICKNESS TUNGSTEN
title	Helium bubble bursting in tungsten
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