[13p-B12-1~18] 2.2 Detection systems

[13p-B12-1] Measurements of Ni-61 Nuclear Resonant Scattering with a Scintillation Detector Using Proportional-mode Si-APD

〇(D)Keisuke Inoue¹, Shunji Kishimoto^1,2, Rie Haruki², Yoshitaka Yoda³, Yasuhiro Kobayashi⁴, Makoto Seto⁴, Masanori Koshimizu⁵, Fumihiko Nishikido⁶ (1.SOKENDAI, 2.KEK-IMSS, 3.JASRI, 4.Kyoto Univ., 5.Tohoku Univ., 6.QST-NIRS)

Keywords:Nuclear resonant scattering, Avalanche photodiode, Scintillation detector

To obtain a sub-nanosecond time resolution, a high count rate up to 10⁸s^-1 and a detection efficiency sufficient for high-energy X-rays, we tested a scintillation detector using a proportional-mode silicon avalanche photodiode. On the presentation, Ni-61 nuclear forward scattering of synchrotron radiation recorded by the prototype detector will be reported.The nuclear scattering time spectrum showed nuclear forward scattering gamma-rays that appeared five nsec after the pulsed-Xrays.The data indicates that the new detector has a utility for the experiment.