Experimental observation of the number of visible defects produced in individual primary damage cascades in irradiated tungsten

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Mason , D R , Yi , X , Sand , A E & Dudarev , S L 2018 , ' Experimental observation of the number of visible defects produced in individual primary damage cascades in irradiated tungsten ' , Europhysics Letters , vol. 122 , no. 6 , 66001 . https://doi.org/10.1209/0295-5075/122/66001

Title: Experimental observation of the number of visible defects produced in individual primary damage cascades in irradiated tungsten
Author: Mason, D. R.; Yi, X.; Sand, A. E.; Dudarev, S. L.
Contributor: University of Helsinki, Department of Physics
Date: 2018-06
Language: eng
Number of pages: 6
Belongs to series: Europhysics Letters
ISSN: 0295-5075
URI: http://hdl.handle.net/10138/307873
Abstract: We present a new analysis of nanoscale lattice defects observed after low-dose in situ self-ion irradiation of tungsten foils at cryogenic temperature. For decades, defect counts and size-frequency histograms have been the standard form of presenting a quantitative analysis of the nanoscale "black-dot" damage typical of such irradiations. Here we demonstrate a new statistical technique for generating a probability distribution for the number of defects produced in a single cascade. We show that while an average of fewer than one defect is observed per incident ion, the number of cascades with two or more visible defects produced is significant. Copyright (C) EPLA, 2018
Subject: PRISMATIC DISLOCATION LOOPS
FREE SURFACES
EVOLUTION
114 Physical sciences
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