Speaker
Mr
Shuichi TAKAMURA
(Japan)
Description
The surface cooling mechanisms (mainly, decrease in secondary electron emission (SEE) and increase in radiation emissivity) of nanostructured tungsten (W) are summarized comprehensively. Recovery of He-defected W towards flat surface is demonstrated as well as the suppression of nanostructure formation by covering the surface with carbon thin film. The key factor for physical mechanism of nanostructure formation is given by comparing the surface temperature ranges for W (1000 ~ 1500 K) and tantalum (Ta) (< 900 K).
Country or International Organization of Primary Author
Japan
Primary author
Mr
Shuichi TAKAMURA
(Japan)
Co-authors
Prof.
Noriyasu OHNO
(Nagoya University)
Mr
Takanori MIYAMOTO
(Aichi Institute of Technology)
