Measurement of radioactivity induced by GeV-protons and spallation neutrons using AGS accelerator

Kasugai, Yoshimi  ; Kai, Tetsuya   ; Maekawa, Fujio  ; Nakashima, Hiroshi; Takada, Hiroshi   ; Konno, Chikara  ; Numajiri, Masaharu*; Ino, Takashi*; Takahashi, Kazutoshi*

Measurement of radioactivity induced by high-energy protons with energy of 2.83 and 24 GeV and spallation neutrons produced by bombarding a mercury target with the high-energy protons were performed by using the AGS (Alternative Gradient Synchrotron) accelerator at Brookhaven National Laboratory. The samples of boron, carbon, aluminum, iron, copper, niobium, mercury-oxide, lead, bismuth, acrylic resin, SS-316, Inconel-625 and Inconel-718 were irradiated around the mercury target. After the irradiation, the radioactivity of each sample was measured by using HPGe detectors at the cooling time between 2 h and 200 d. In the processing of the measured -ray spectra, more than 90 radioactive nucleus were identified, and the radioactivity data were obtained. This report gives the experimental procedure, the data processing and the experimental results in detail.