CAJ | 학술논문

利用液闪探测器研究了几种数字化波形甄别方法的n/γ甄别能力。以Am-Be源作为混合场源，用示波器对EJ-301和BC501A两种液闪探测器信号进行数字化采集，分别用上升时间法、电荷比较法、脉冲梯度分析和频率梯度分析等数字化波形甄别方法对采集的信号进行了n/γ离线甄别分析，比较了4种方法的甄别效果，并用M PD-4甄别单元从实验上验证了各方法的可靠性。结果表明：对于液闪探测器，4种数字化方法具有较好的甄别一致性和准确性，上升时间法的甄别效果最好，是实时甄别系统甄别算法的理想选择。
이용액섬탐측기연구료궤충수자화파형견별방법적n/γ견별능력。이Am-Be원작위혼합장원，용시파기대EJ-301화BC501A량충액섬탐측기신호진행수자화채집，분별용상승시간법、전하비교법、맥충제도분석화빈솔제도분석등수자화파형견별방법대채집적신호진행료n/γ리선견별분석，비교료4충방법적견별효과，병용M PD-4견별단원종실험상험증료각방법적가고성。결과표명：대우액섬탐측기，4충수자화방법구유교호적견별일치성화준학성，상승시간법적견별효과최호，시실시견별계통견별산법적이상선택。
To obtain the n/γ discrimination ability of different digital pulse shape dis-crimination methods ,four methods (rising time method ,charge comparison method , pulse gradient analysis and frequency gradient analysis ) in americium-beryllium mixed radiation fields were demonstrated .The signals from EJ-301 and BC501A scintillator detectors were digitized using oscilloscope .A comparison was taken among the four discrimination methods .T he discrimination results of the four methods in liquid scintil-lator detectors show that the rising time method is the best and it provides a good choice in real-time n/γ discrimination system .