کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1833118 1526501 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deconvolution of 2D coincident Doppler broadening spectroscopy using the Richardson-Lucy algorithm
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Deconvolution of 2D coincident Doppler broadening spectroscopy using the Richardson-Lucy algorithm
چکیده انگلیسی
Coincident Doppler Broadening Spectroscopy (CDBS) measurements are popular in positron solid-state studies of materials. By utilizing the instrumental resolution function obtained from a gamma line close in energy to the 511 keV annihilation line, it is possible to significantly enhance the quality of the CDBS spectra using deconvolution algorithms. In this paper, we compare two algorithms, namely the Non-Negativity Least Squares (NNLS) regularized method and the Richardson-Lucy (RL) algorithm. The latter, which is based on the method of maximum likelihood, is found to give superior results to the regularized least-squares algorithm and with significantly less computer processing time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 560, Issue 2, 10 May 2006, Pages 552-557
نویسندگان
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