동경공업대학교의 3MV 펠레트론가속기를 사용하여 10에서 90keV 영역에 대하여 197 Au의 중성자포획 스펙트럼을 측정하였다. 중성자 펄스빔은 7Li(p,n)7 Be반응을 통하여 발생되었다. 사용되어진 양성자 빔 의 폭은 1.5-ns였다. 금 시료에 입사된 중성자의 에너지 스펙트럼은 6 Li-glass 섬광검출기의 중성자 비행 시간법을 사용하여 측정하였다. 금 시료의 중성자포획에 의해서 발생된 감마선은 anti-Compton NaI(TI) 검출장비를 사용하여 측정되었다. 본 연구에서는 5개의 중성자 에너지 역영을 선택했고, 각각의 에너지 영역에서 얻어진 감마선파고스펙트럼을 표시하였다. 본 연구에서 얻어진 스펙트럼은 처음으로 얻어진 결과이며, 중성자 결합에너지부근에 몇 개의 천이 피크가 보인다.

Peanut (Arachis hypogaea L.) mutants were induced by the gamma ray with 300 Gy of Co-60 irradiation using the seed of cultivar Shinnamkwang. BTM3-9 and BTM5-19 lines were selected in M₃ generation and then segregated. In M₈ generatio

Peanut (Arachis hypogaea L.) mutants were induced by the gamma ray with 300 Gy of Co-60 irradiation using the seed of cultivar Shinnamkwang. BTM3-9 and BTM5-19 lines were selected in M3 generation and then segregated. In M8 generation, the yield potential

A prompt gamma-ray neutron activation (PGNA) system was simulated by the Monte Carlo N-Particle transport code (MCNP-4A) to estimate the level at which the scattered photon fluence rate, the absolute efficiency of the HPGe-detector, the volume of the concrete sample and the 35Cl(n,γ) reaction rate in this sample contribute to the count rate in the NaCl concentration measurement. The n-γ fluence rates at the ST-2 beam tube exit of the HANARO reactor were used as input data, and the GAMMA-X type HPGe detector was modeled to tally 1.1649 MeV γ-rays emitted from the 35Cl(n,γ) reaction in the concrete sample. For three cylindrical concrete samples of 13.8, 46.8 and 157.1 cm3 volumes, respectively, the relations between the NaCl weight fractions of 0.1, 1, 2 and 5 % in each of the concrete samples and the 1.1649 MeV pulses created in the HPGe detector model were studied. As a result, it was found that the count rate at the same NaCl concentration nearly depends on the volume of the samples in a simulated condition of the same NaCl concentration samples, and that the linearities of the NaCl concentration calibration curves were reasonable in the narrow range of the NaCl weight fraction.