CAJ | 학술논문

通过对244 Cm的α实验谱进行拟合得到单能峰的峰形参数，采用随机抽样技术表征谱计数的统计涨落，建立了一种模拟半导体α能谱的方法。利用该方法模拟238 Pu和243 Am的α能谱，与实验谱基本吻合，证明了方法的可靠性。在此基础上，研究了239 Pu对237 N p的α能峰的影响，结果表明，当239 Pu与237Np的活度比 A（239Pu）／A（237Np）≤10时，通过解谱得到的 A（239Pu）／A（237Np）与设定值的相对偏差≤2.0％。对于 A（239 Pu）／A（237 Np）约为3000的样品，如果对钚的去污系数达到300以上，则可由α能谱法测量样品中的237 N p。
통과대244 Cm적α실험보진행의합득도단능봉적봉형삼수，채용수궤추양기술표정보계수적통계창락，건립료일충모의반도체α능보적방법。이용해방법모의238 Pu화243 Am적α능보，여실험보기본문합，증명료방법적가고성。재차기출상，연구료239 Pu대237 N p적α능봉적영향，결과표명，당239 Pu여237Np적활도비 A（239Pu）／A（237Np）≤10시，통과해보득도적 A（239Pu）／A（237Np）여설정치적상대편차≤2.0％。대우 A（239 Pu）／A（237 Np）약위3000적양품，여과대비적거오계수체도300이상，칙가유α능보법측량양품중적237 N p。
The peak shape parameters were obtained by fitting 244 Cm αexperiment spec‐tra .The fluctuation of counts was characterized by random sampling ,and a simulation method of αspectra was established .The method was verified by comparing the simula‐tion spectra and the experiment spectra of 238 Pu and 243 Am .The effects of 239 Pu on 237 Np were analyzed .The results indicate that the relative deviation between the activity ratio of 239 Pu and 237 Np (A (239 Pu)/A (237 Np)) obtained by spectra analysis and the preas‐signed value is ≤ 2.0% if the A(239 Pu)/A(237 Np) is ≤10 . For the sample with A(239 Pu)/A(237 Np) of about 3 000 ,237 Np can be measured with α spectrometry if the decontamination factor of 239 Pu reaches to 300 .