A method for interpolating asymmetric peak shapes in multiplet γ-ray spectra

作者: Wang Si-Guang , Mao Ya-Jun , Tang Pei-Jia , Zhu Bo , Liang Yu-Tie

DOI: 10.1088/1674-1137/33/5/013

关键词:

摘要: The peak shapes of ?-rays at various energies must be known before unfolding the multiplet spectra obtained by using semiconductor or scintillation detectors. Traditional methods describe isolated peaks with multi-parameter fitting functions, and assume that most these parameters do not vary energy because it is rare to find a spectrum enough constrain their dependence. We present an algorithm for interpolating ?-ray profile any intermediate given pair from under consideration. tested on experimental data leads good agreement between interpolated function. This method more accurate than traditional approach, since all aspects shape are allowed energy. New definitions Left-Half Width Half Maximum, Right-Half Maximum description introduced in this paper.

参考文章(10)
Rene Brun, Fons Rademakers, ROOT: an object-oriented data analysis framework Linux Journal. ,vol. 1998, pp. 6- ,(1998) , 10.5170/CERN-2000-013.11
T. PAPP, A. T. PAPP, J. A. MAXWELL, Quality Assurance Challenges in X-ray Emission Based Analyses, the Advantage of Digital Signal Processing Analytical Sciences. ,vol. 21, pp. 737- 745 ,(2005) , 10.2116/ANALSCI.21.737
Gary W. Phillips, Keith W. Marlow, Automatic analysis of gamma-ray spectra from germanium detectors Nuclear Instruments and Methods. ,vol. 137, pp. 525- 536 ,(1976) , 10.1016/0029-554X(76)90472-9
M. Morháč, J. Kliman, M. Jandel, Ľ. Krupa, V. Matoušek, J.H. Hamilton, A.V. Ramayya, Efficient fitting algorithms applied to analysis of coincidence γ-ray spectra Computer Physics Communications. ,vol. 172, pp. 19- 41 ,(2005) , 10.1016/J.CPC.2005.06.005
R.G. Helmer, M.A. Lee, Analytical functions for fitting peaks from Ge semiconductor detectors Nuclear Instruments and Methods. ,vol. 178, pp. 499- 512 ,(1980) , 10.1016/0029-554X(80)90830-7
K. Debertin, W. Pessara, Natural line-width effects in gamma- and X-ray emission rate measurements with semiconductor detectors Nuclear Instruments and Methods. ,vol. 184, pp. 497- 503 ,(1981) , 10.1016/0029-554X(81)90753-9
S.G. Prussin, Prospects for near state-of-the art analysis of complex semiconductor spectra in the small laboratory Nuclear Instruments and Methods in Physics Research. ,vol. 193, pp. 121- 128 ,(1982) , 10.1016/0029-554X(82)90685-1
H. Siegert, H. Janssen, Precise determination of gamma-ray peak areas Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 286, pp. 415- 420 ,(1990) , 10.1016/0168-9002(90)90889-E
Myung C. Lee, K. Verghese, R.P. Gardner, Extension of the semiempirical germanium detector response function to low energy gamma rays Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 262, pp. 430- 438 ,(1987) , 10.1016/0168-9002(87)90884-9