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Oral presentation

Current status of JRR-3 and the expected schedule until the operation restarts

Matsue, Hideaki; Osakabe, Toyotaka; Abe, Kazuhide

no journal, , 

no abstracts in English

Oral presentation

Restart of JRR-3 operation and activities of JRR-3 Users Office

Tamura, Itaru; Kodama, Katsuaki; Igawa, Naoki; Abe, Kazuhide; Matsue, Hideaki

no journal, , 

no abstracts in English

Oral presentation

Restart of user program of JRR-3 and activities of JRR-3 Users Office

Tamura, Itaru; Kodama, Katsuaki; Igawa, Naoki; Abe, Kazuhide; Matsue, Hideaki

no journal, , 

no abstracts in English

Oral presentation

Study of NEG surface reaction with gas molecules by in-situ HAXPES

Kobata, Masaaki; Fukuda, Tatsuo; Tanida, Hajime; Kamiya, Junichiro; Morohashi, Yuko; Yamada, Ippei; Abe, Kazuhide

no journal, , 

The mechanism of how the substrate titanium contributes to the advanced getter performance has not been elucidated. In this study, NEG/Ti interface analysis was performed using HAXPES at BL22XU to clarify the effect of Ti substrate on NEG performance.

Oral presentation

Analysis of activation and deterioration mechanism of Ti-Zr-V NEG coating by XPS

Kamiya, Junichiro; Abe, Kazuhide; Kobata, Masaaki; Tsuda, Yasutaka; Fukuda, Tatsuo; Fujimori, Shinichi; Morohashi, Yuko; Yamada, Ippei; Yoshigoe, Akitaka

no journal, , 

Sequence measurements with XPS have been performed to understand more detail about the activation and deterioration mechanism. The sample of a titanium plate with Ti-Zr-V coating of 1 um thickness was prepared. The sample was set in the surface science station in the BL23SU of SPring-8. At first, the XPS measurements for the sample surface were performed during the sample temperature was raised to 250$$^{circ}$$C. After that, the XPS was subsequently performed during the injection of oxygen gas into the chamber while keeping the sample temperature at 250$$^{circ}$$C, which corresponds to the accelerated deterioration test. After that, the depth profile of the sample was measured with another XPS apparatus with an X-ray tube by argon etching. The result showed that the surface Zr gets the oxygen from Ti oxide and V oxide at the first stage of the activation and the oxygen of the Zr oxide would diffuse to the bulk in the continuous temperature rise. It was revealed that the concentrated oxygen in the coating exists in the forms of mainly Zr oxide and Ti oxide in the second place.

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