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Light response of large GSO and stacked GSO to intermediate energy protons

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8 Author(s)
Aoki, S. ; Dept. of Nucl. Eng., Kyushu Univ., Fukuoka, Japan ; Yoshida, H. ; Uozumi, Y. ; Cao, B.
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Light output response of a large GSO(Ce) crystal and a stacked GSO(Ce) spectrometer was investigated by the use of pp scattering at a lab. Energy of 392 MeV. The proton beam was provided by the Research Center for Nuclear Physics (RCNP). A stacked GSO(Ce) scintillator spectrometer consisted of three plastic plates, two cubic GSO(Ce) crystals and a cylindrical GSO(Ce) crystal. The cubes have edge length of 43 mm and the cylinder of 62 mm in diameter and 120 mm long. Energy spectra of protons from H(p,2p) scattering were measured at 12 angles from 19.7 to 66.1 deg in lab. frame. With results for cubes, a relation of light output and deposit energy was determined up to 161 MeV. The measurement with the cylinder allowed the light output up to 198 MeV to be studied. With these results good linearity was confirmed in a proton energy range between 30 to 198 MeV. By the use of the relation determined presently, light output of the stacked GSO(Ce) was examined. It was confirmed that, in a case of stacked GSO(Ce), the linearity holds up to at least 340 MeV

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Nuclear Science, IEEE Transactions on  (Volume:47 ,  Issue: 6 )