CAJ | 학술논문

α谱仪系统的能量分辨率是描述探测系统性能的重要指标,也是决定能谱质量的主要因素.根据BH1324C型单路α谱仪系统的结构组成和工作原理,研究了不同的探测器工作偏压、不同的探测距离和不同大气气压条件下对系统能量分辨率的影响,并进行了双因素方差分析.结果表明,系统在工作偏压为80V、探测距离为1.25cm、气压为15Pa条件下,对5.486MeV的α射线能够获得展宽FWHM为5.7keV的能谱.
α보의계통적능량분변솔시묘술탐측계통성능적중요지표,야시결정능보질량적주요인소.근거BH1324C형단로α보의계통적결구조성화공작원리,연구료불동적탐측기공작편압、불동적탐측거리화불동대기기압조건하대계통능량분변솔적영향,병진행료쌍인소방차분석.결과표명,계통재공작편압위80V、탐측거리위1.25cm、기압위15Pa조건하,대5.486MeV적α사선능구획득전관FWHM위5.7keV적능보.
Energy resolution is an important parameter which describes the performance of alpha spectrom-eter system,and also the major factor that determines the quality of energy spectrum. According to the constitution and principle of single-way alpha spectrometer system MOD. BH1324C, it studies the influ-ence of different bias vohage,different detection range,different atmospheric pressure on the system's en-ergy resolution, executes two-factor variance analysis. Results show that energy spectrum can take on the smallest FWHM,when bias voltage is 80V, detection range is 1.25cm and air pressure is 15Pa. The best FWHM can be 5.7keV for the 5.486MeV alpha spectrum.