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- Publisher Website: 10.1016/j.cpc.2005.02.005
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Article: An evaluation of algorithms for the deconvolution of Doppler broadening positron annihilation radiation spectroscopy spectra
Title | An evaluation of algorithms for the deconvolution of Doppler broadening positron annihilation radiation spectroscopy spectra |
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Authors | |
Keywords | Optimization Positron annihilation radiation spectroscopy Regularization Monte Carlo simulation Iterative methods Doppler Broadening Deconvolution |
Issue Date | 2005 |
Citation | Computer Physics Communications, 2005, v. 168, n. 3, p. 177-186 How to Cite? |
Abstract | Two least squares minimization methods for the deconvolution of 1D Doppler Broadening Annihilation Radiation Spectroscopy (DBARS) spectra have been tested with spectra generated by Monte Carlo simulation according to the following functional forms: inverted triangle, inverted parabola, Laplace, Lorentz and a model DBARS spectrum for a metal composed of an inverted parabola and a Gaussian function. These reference spectra were firstly convoluted with a Gaussian broadening factor and then restored to its original form with the algorithms. The method with Tikhonov regularizer and non-negativity constraint still failed to restore the sharp features of these spectral functions although the negative signal found in an earlier study was removed. On the other hand, the method with the Huber regularizer was successful. Optimization of the deconvolution in terms of regularization parameters is necessary to achieve good deconvolution. The optimization of the deconvolution was checked with visual matching and a quality factor which takes into account the number of counts in the spectrum. © 2005 Elsevier B.V. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/276749 |
ISSN | 2023 Impact Factor: 7.2 2023 SCImago Journal Rankings: 1.790 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Woo, Teresa K.C. | - |
dc.contributor.author | Cheng, Vincent K.W. | - |
dc.contributor.author | Beling, Christopher D. | - |
dc.contributor.author | Ng, Michael K.P. | - |
dc.date.accessioned | 2019-09-18T08:34:33Z | - |
dc.date.available | 2019-09-18T08:34:33Z | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | Computer Physics Communications, 2005, v. 168, n. 3, p. 177-186 | - |
dc.identifier.issn | 0010-4655 | - |
dc.identifier.uri | http://hdl.handle.net/10722/276749 | - |
dc.description.abstract | Two least squares minimization methods for the deconvolution of 1D Doppler Broadening Annihilation Radiation Spectroscopy (DBARS) spectra have been tested with spectra generated by Monte Carlo simulation according to the following functional forms: inverted triangle, inverted parabola, Laplace, Lorentz and a model DBARS spectrum for a metal composed of an inverted parabola and a Gaussian function. These reference spectra were firstly convoluted with a Gaussian broadening factor and then restored to its original form with the algorithms. The method with Tikhonov regularizer and non-negativity constraint still failed to restore the sharp features of these spectral functions although the negative signal found in an earlier study was removed. On the other hand, the method with the Huber regularizer was successful. Optimization of the deconvolution in terms of regularization parameters is necessary to achieve good deconvolution. The optimization of the deconvolution was checked with visual matching and a quality factor which takes into account the number of counts in the spectrum. © 2005 Elsevier B.V. All rights reserved. | - |
dc.language | eng | - |
dc.relation.ispartof | Computer Physics Communications | - |
dc.subject | Optimization | - |
dc.subject | Positron annihilation radiation spectroscopy | - |
dc.subject | Regularization | - |
dc.subject | Monte Carlo simulation | - |
dc.subject | Iterative methods | - |
dc.subject | Doppler Broadening | - |
dc.subject | Deconvolution | - |
dc.title | An evaluation of algorithms for the deconvolution of Doppler broadening positron annihilation radiation spectroscopy spectra | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.cpc.2005.02.005 | - |
dc.identifier.scopus | eid_2-s2.0-19044369140 | - |
dc.identifier.volume | 168 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 177 | - |
dc.identifier.epage | 186 | - |
dc.identifier.isi | WOS:000229984900004 | - |
dc.identifier.issnl | 0010-4655 | - |