Response of germanium detectors for high-energy $\gamma$-rays by $^{27}$Al(p, $\gamma$)$^{28}$Si at Ep=992 keV

Rurie Mizuno; Megumi Niikura; Tokihiro Ikeda; Teiichiro Matsuzaki; Shintaro Go; Takeshi Y. Saito; Shin'ichiro Michimasa; Hiroyoshi Sakurai

arXiv · 2301.09888

Response of germanium detectors for high-energy $\gamma$-rays by $^{27}$Al(p, $\gamma$)$^{28}$Si at Ep=992 keV

Rurie Mizuno·Megumi Niikura·Tokihiro Ikeda·Teiichiro Matsuzaki·Shintaro Go·Takeshi Y. Saito·Shin'ichiro Michimasa·Hiroyoshi Sakurai

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Abstract

The performance of germanium detectors for high-energy $\gamma$-rays was evaluated using a 992-keV resonance in the $^{27}$Al(p, $\gamma$)$^{27}$Si reaction. The measurement was conducted at the RIKEN tandem accelerator. The energy of the excited state from the resonance was evaluated as 12540.7(2) keV. Using newly evaluated excitation energy, an energy calibration function and the photo-peak efficiency of Ge detectors up to 10.8-MeV photon were deduced. The energy accuracy is achieved at 0.3 keV for the overall energy region. This reaction provides reliable energy and efficiency standards for high-energy $\gamma$ rays.

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Rurie Mizuno, Megumi Niikura, Tokihiro Ikeda, Teiichiro Matsuzaki, Shintaro Go, Takeshi Y. Saito, Shin'ichiro Michimasa, Hiroyoshi Sakurai. 2023-01-24. Response of germanium detectors for high-energy $\gamma$-rays by $^{27}$Al(p, $\gamma$)$^{28}$Si at Ep=992 keV. https://arxiv.org/abs/2301.09888

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