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- telescope ERDAHarayama, Isao; Hirose, Yasushi*; Sekiba, Daiichiro*
Nuclear Instruments and Methods in Physics Research B, 554, p.165435_1 - 165435_6, 2024/09
Times Cited Count：0 Percentile：0.00(Instruments & Instrumentation)- telescope elastic recoil detection analysis (ERDA) is a helpful ion beam analysis (IBA) technique for the absolute quantification of multiple light elements in thin films. We have developed a compact - telescope ERDA system to estimate a composition ratio of oxygen and nitrogen in metal oxynitride thin films. Our - telescope ERDA system employs a gas ionization chamber (GIC), which consisted of a U-shaped cathode, while a planar shaped cathode is widely utilized for GICs. The shape of U-shaped cathode is useful to downsize the GIC. The difference of performance between the U-shaped and planar shaped cathodes, however, has not been studied well, yet. In this study, we quantitatively evaluated the influence using the U-shaped cathode on - telescope ERDA. In order to compare the performance of the U-shaped and planar shaped cathode, we measured SrTiO
bulk samples as a standard with them. There is no significant difference between the two cathodes from the viewpoint of O recoil yields. These results show that the U-shaped cathode can also be used safely for - telescope ERDA, and that GICs have a flexibility in the electrode shape, which is useful to make GICs more compact.
Shobu, Takahisa; Mukai, Tomohisa*; Choe, H.*; Takano, Yoshiki*; Sakashita, Masanobu*; Nakamura, Akihiro*; Morooka, Satoshi; Kurita, Keisuke; Harayama, Isao; Iikura, Hiroshi
no journal, ,
Post-installed anchors are a common technology used in seismic retrofitting work, and it is expected that their range of application will expand to include renovation work such as expansions and reconstructions. In this study, neutrons, which have an extremely high penetrating power for materials, were used to evaluate the long-term adhesion characteristics of post-installed anchors from the results of measuring the strain distribution of rebar under load, etc.
Harayama, Isao; Kurita, Keisuke; Iikura, Hiroshi; Tsuchikawa, Yusuke; Kai, Tetsuya; Shinohara, Takenao; Matsubayashi, Masahito; Odaira, Naoya*; Ito, Daisuke*; Saito, Yasushi*
no journal, ,
no abstracts in English
Harayama, Isao; Kurita, Keisuke; Iikura, Hiroshi; Tsuchikawa, Yusuke; Kai, Tetsuya; Shinohara, Takenao; Matsubayashi, Masahito; Odaira, Naoya*; Ito, Daisuke*; Saito, Yasushi*
no journal, ,
no abstracts in English
Kurita, Keisuke; Iikura, Hiroshi; Harayama, Isao; Tsuchikawa, Yusuke; Kai, Tetsuya; Shinohara, Takenao; Odaira, Naoya*; Ito, Daisuke*; Saito, Yasushi*; Matsubayashi, Masahito
no journal, ,
Two large neutron experimental facilities are located at the Nuclear Science Research institute site. One is the Japan Proton Accelerator Research Complex (J-PARC). The other is the Japan Research Reactor-3 (JRR-3). Each of them has neutron imaging facilities. In this presentation, we will introduce the performances, updated devices, utilization results and imaging examples of neutron radiography facilities at the JRR-3.
