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Deuterium retention of boron-titanium and reduction of deuterium retention after helium ion irradiations

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Title: Deuterium retention of boron-titanium and reduction of deuterium retention after helium ion irradiations
Authors: Hino, T. Browse this author
Hashiba, Y. Browse this author
Yamauchi, Y. Browse this author
Nishimura, K. Browse this author
Ashikawa, N. Browse this author
Sagara, A. Browse this author
Noda, N. Browse this author
Komori, A. Browse this author
Motojima, O. Browse this author
Keywords: Boron-titanium
Deuterium retention
Desorption temperature
Crystal structure
Issue Date: Aug-2010
Publisher: Elsevier B.V.
Journal Title: Fusion Engineering and Design
Volume: 85
Issue: 5
Start Page: 655
End Page: 660
Publisher DOI: 10.1016/j.fusengdes.2010.03.008
Abstract: Deuterium ion irradiations with an ion with energy of 1.7 keV were conducted for boron-titanium (B-Ti) film prepared by electron beam evaporation and hot pressed titanium-boride, TiB2. The amount of retained deuterium was measured for these materials using a technique of thermal desorption spectroscopy. The amount of deuterium retained in TiB2 was comparable with that in B-Ti. Desorption peaks of deuterium in B-Ti were 470 and 620K, corresponding to a desorption in the low temperature regime observed in boron (B) and a desorption in titanium (Ti), respectively. The desorption peaks in TiB2 were 620K and 750K, which correspond to the desorption in Ti and that in the high temperature regime in B, respectively. The desorption temperature in B-Ti was approximately 100 K lower than that in TiB2. This difference is discussed based upon chemical bindings and crystal structures of B-Ti and TiB2. Irradiation of helium ion with energy of 5 keV was conducted for B-Ti after the deuterium ion irradiation. The amount of retained deuterium decreased and the desorption temperature shifted to the lower temperature regime, as the helium ion fluence increased. The shift to the low temperature regime is due to the enhancement of amorphous structure of B in B-Ti.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 日野 友明

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