TY - JOUR
T1 - Electronic stopping power dependence of ion-track size in UO2 irradiated with heavy ions in the energy range of ∼1 MeV/u
AU - Ishikawa, N.
AU - Sonoda, T.
AU - Sawabe, T.
AU - Sugai, H.
AU - Sataka, M.
N1 - Funding Information:
The authors are grateful to the technical staff of the accelerator facilities at JAEA-Tokai for their great help. Part of the present work was financially supported by KAKENHI ( 21360474 ).
PY - 2013
Y1 - 2013
N2 - In order to investigate electronic stopping power dependence of ion-track size in UO2, ion-tracks in UO2 irradiated with various ions with the specific energy in the order of 1 MeV/u have been observed by a transmission electron microscope. The ion-track size shows monotonic increase as a function of the electronic stopping power. The ion-track size obtained for UO2 is smaller than that obtained for CeO2, although these two compounds have same crystallographic structure and similar thermal properties. The ion-track sizes for irradiations with ions having relatively low energy of about 1 MeV/u are smaller than those expected from the thermal spike models based on melting temperature criterion. The possible interpretations for the unusually small ion-tracks observed for UO2 are discussed.
AB - In order to investigate electronic stopping power dependence of ion-track size in UO2, ion-tracks in UO2 irradiated with various ions with the specific energy in the order of 1 MeV/u have been observed by a transmission electron microscope. The ion-track size shows monotonic increase as a function of the electronic stopping power. The ion-track size obtained for UO2 is smaller than that obtained for CeO2, although these two compounds have same crystallographic structure and similar thermal properties. The ion-track sizes for irradiations with ions having relatively low energy of about 1 MeV/u are smaller than those expected from the thermal spike models based on melting temperature criterion. The possible interpretations for the unusually small ion-tracks observed for UO2 are discussed.
KW - Ion-tracks
KW - Irradiation effect
KW - Transmission electron microscopy
KW - UO
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U2 - 10.1016/j.nimb.2013.05.038
DO - 10.1016/j.nimb.2013.05.038
M3 - Article
AN - SCOPUS:84886589493
VL - 314
SP - 180
EP - 184
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
ER -