CAJ | 학술논문

通过叙述NaI（Tl）探测器输出信号的形成过程，分析得出核信号峰值vmax与其出现的时刻tvmax为相互独立的2个随机变量，及在整个测量时间段内tvmax服从均匀分布，vmax的概率密度函数可用能谱函数近似表示。通过对已有γ/X能谱的分析得出vmax的概率密度函数；利用蒙特卡洛方法抽取NaI （Tl）探测器输出信号峰值vmax出现的时刻tvmax。模拟结果表明仿核信号与原核信号具有相同的时间特性；仿核能谱与原能谱具有很高的相似度。
통과서술NaI（Tl）탐측기수출신호적형성과정，분석득출핵신호봉치vmax여기출현적시각tvmax위상호독립적2개수궤변량，급재정개측량시간단내tvmax복종균균분포，vmax적개솔밀도함수가용능보함수근사표시。통과대이유γ/X능보적분석득출vmax적개솔밀도함수；이용몽특잡락방법추취NaI （Tl）탐측기수출신호봉치vmax출현적시각tvmax。모의결과표명방핵신호여원핵신호구유상동적시간특성；방핵능보여원능보구유흔고적상사도。
In the paper, it is concluded by describing the process of output signal of NaI (Tl) detector that the peak value vmax and its time tvmax are independent random variables , tvmax follows the uniform distribution in all measuring time, the probability density function of vmax approximates the energy spectra function .Concluding the probability density function of vmax by analazing the existing γ/X spectra, sampling the time tvmax of output signal peak value vmax of NaI(Tl) detector.The simulation results are that both simulating and primary signals have the same time character and the similarity of simulating and primary spectra are similar very much .