ZHANG Qingxian GE Liangquan GU Yi ZENG Guoqiang LIN Yanchang WANG Guangxi. The unfolding of NaI(Tl) γ-ray spectrum based on maximum likelihood method[J]. Nuclear techniques, 2011, 34(8): 569-574.
ZHANG Qingxian GE Liangquan GU Yi ZENG Guoqiang LIN Yanchang WANG Guangxi. The unfolding of NaI(Tl) γ-ray spectrum based on maximum likelihood method[J]. Nuclear techniques, 2011, 34(8): 569-574.DOI:
are used to detect gamma rays in field surveys.But the poor energy resolution hinders their applications
despite the use of traditional methods to resolve the overlapped gamma-ray peaks.In this paper
the maximum likelihood(ML) solution is used to resolve the spectrum.The ML method
which is capable of decomposing the peaks in energy difference of over 2/3 FWHM
is applied to scale NaI(Tl) the spectrometer.The result shows that the net area is in proportion to the content of isotopes and the precision of scaling is better than the stripping ration method.