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UVSOR-IIIにおけるガンマ線誘起陽電子消滅分光法の開発

Development of gamma ray-induced positron annihilation spectroscopy at UVSOR-III

平 義隆*; 杉田 健人*; 山本 涼平*; 岡野 泰彬*; 平出 哲也  

Taira, Yoshitaka*; Sugita, Kento*; Yamamoto, Ryohei*; Okano, Yasuaki*; Hirade, Tetsuya

UVSOR-IIIにおいて、ガンマ線誘起陽電子消滅分光法を開発している。本手法では、従来の陽電子線源を用いた方法では測定が困難であった厚さ数cmのバルク試料全体の欠陥分析が可能となる。現在、陽電子寿命測定法のユーザー利用を展開し、それと並行して同時計数ドップラー拡がり法,寿命運動量相関測定法,スピン偏極陽電子分光法の開発を行っている。本討論会ではそれらの開発状況について述べる。

We are developing gamma-ray-induced positron annihilation spectroscopy at UVSOR-III. This method enables defect analysis of the entire bulk sample with a thickness of several cm, which was difficult to measure with the conventional method using a positron radiation source. Currently, the user use of the positron lifetime measurement method is being developed, and in parallel with this, the coincidence Doppler broadening method, the age-momentum correlation measurement method, and the spin-polarized positron spectroscopy are being developed. Here, we will describe the development status of them.

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