Double differential thick target neutron yields from 5and 9 MeV deuteron incidence on aluminum and SUS304st ainless steel were measured at the Kyushu University Tandem Accelerator Laboratory. An aluminum, and a SUS 304 foil which were thick enough for a deuteron to stop in the foils were placed at the center of a vacuum chamber. AnNE213 liquid organic scintillator was employed to detect neutrons emitted from targets. To consider the contribution of scattered neutrons from the floor, we also measured neutron yields with an iron shadow bar located in front of the scintillator. Because incident deuteron beam was not pulsed and the Time-of-Flight method was not applied, the energy spectrum was derived from unfolding the light output spectrum using the FORIST code. The re sponse function of the detector was calculated with the SCINFUL-QMD code. The experimental results were compared with the calculation data of the TALYS and PHITS code, and it turned out that the calculation data does not reproduce the experimental ones satisfactorily.

A Li-glass scintillator was placed in the slow neutron eld at temperatures of 300 K and 77 K. An avalanche photodiode (APD) was employed for converting scintillation photons into voltage signal pulses. A peak corresponding to the Q-value of the 6 Li(n, α)T reaction appeared in both pulse height distributions obtained at temperatures of 300 K and 77 K. By using the relationship between the Compton-edge energy and the pulse height in response of the Li-glass scintillator to γ-rays radiated from 137 Cs, the values of the gamma equivalent energy of the thermal neutron peak were evaluated to be 1.60 ± 0.09 MeV and 1.16 ± 0.06 MeV at temperatures of 300 K and 77 K, respectively. For the Li-glass scintillator, the ratio of the light yield in thermal neutron detection to that in γ-ray detection was found to decrease with temperatures.

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