Open AccessSimultaneous irradiation and thermal effects on 16 MeV proton irradiated tungsten samples
Author(s) -
R. Rayaprolu,
S. Möller,
Ingo Spahn,
D. Höschen,
Ch. Linsmeier
Publication year - 2021
Publication title -
physica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.415
H-Index - 83
eISSN - 1402-4896
pISSN - 0031-8949
DOI - 10.1088/1402-4896/ac1cf3
Subject(s) - irradiation , materials science , tungsten , softening , hardening (computing) , recrystallization (geology) , scanning electron microscope , radiation damage , thermal , composite material , analytical chemistry (journal) , metallurgy , nuclear physics , thermodynamics , chemistry , paleontology , physics , layer (electronics) , chromatography , biology
16 MeV protons have been used to irradiate 300 μ m thick macroscopic W samples in a pilot experiment to 0.006 dpa damage dose under low and high temperature scenarios of ∼373 K and ∼1223 K, respectively. The linear pre-Bragg region has been used for damage where the electronic loss (heat) in the sample amounts to 1.5 MW · m −2 . Post high-temperature irradiation, the W sample has been recrystallized as seen under the scanning electron microscope. Indentation measurements on the surface show a softening of 0.6 GPa post-recrystallization against an irradiation hardening of 0.8 GPa for the low-temperature irradiation scenario.