Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms

K. F. Ho; H. M. Ching; K. W. Cheng; C. D. Beling; S. Fung; K. P. Ng

doi:10.4028/www.scientific.net/msf.445-446.477

Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms

K. F. Ho^*
, H. M. Ching
, K. W. Cheng
, C. D. Beling
, S. Fung
, K. P. Ng

^*Corresponding author for this work

Department of Mathematics

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

1 Citation (Scopus)

Abstract

In the last few years a number of excellent deconvolution algorithms have been developed for use in "de-blurring" 2D images. Here we report briefly on one such algorithm we have studied which uses the non-negativity constraint to optimize the regularization and which is applied to the 2D image like data produced in Coincidence Doppler Broadening Spectroscopy (CDBS). The system instrumental resolution functions are obtained using the 514keV line from ⁸⁵Sr. The technique when applied to a series of well annealed polycrystalline metals gives two photon momentum data on a quality comparable to that obtainable using ID Angular Correlation of Annihilation Radiation (ACAR).

Original language	English
Title of host publication	Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13
Editors	Toshio Hyodo, Yoshinori Kobayashi, Yasuyuki Nagashima, Haruo Saito
Publisher	Trans Tech Publications Ltd
Pages	477-479
Number of pages	3
ISBN (Electronic)	9783038599388, 9783035706222
ISBN (Print)	9780878499366
DOIs	https://doi.org/10.4028/www.scientific.net/msf.445-446.477
Publication status	Published - Jan 2004
Event	The 13th International Conference on Positron Annihilation, ICPA-13 - Kyoto, Japan Duration: 7 Sept 2003 → 12 Sept 2003 https://www.scientific.net/book/positron-annihilation-icpa-13/978-3-0357-0622-2 (Conference proceedings)

Publication series

Name	Materials Science Forum
Volume	445-446
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Conference

Conference	The 13th International Conference on Positron Annihilation, ICPA-13
Abbreviated title	ICPA-13
Country/Territory	Japan
City	Kyoto
Period	7/09/03 → 12/09/03
Internet address	https://www.scientific.net/book/positron-annihilation-icpa-13/978-3-0357-0622-2 (Conference proceedings)

User-Defined Keywords

Coincidence Doppler Broadening Spectroscopy
Deconvolution
Least-Squares Method
Non-Negativity Constraints

Access to Document

10.4028/www.scientific.net/msf.445-446.477

Cite this

Ho, K. F., Ching, H. M., Cheng, K. W., Beling, C. D., Fung, S., & Ng, K. P. (2004). Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms. In T. Hyodo, Y. Kobayashi, Y. Nagashima, & H. Saito (Eds.), Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13 (pp. 477-479). (Materials Science Forum; Vol. 445-446). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/msf.445-446.477

Ho, K. F. ; Ching, H. M. ; Cheng, K. W. et al. / Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms. Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13. editor / Toshio Hyodo ; Yoshinori Kobayashi ; Yasuyuki Nagashima ; Haruo Saito. Trans Tech Publications Ltd, 2004. pp. 477-479 (Materials Science Forum).

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abstract = "In the last few years a number of excellent deconvolution algorithms have been developed for use in {"}de-blurring{"} 2D images. Here we report briefly on one such algorithm we have studied which uses the non-negativity constraint to optimize the regularization and which is applied to the 2D image like data produced in Coincidence Doppler Broadening Spectroscopy (CDBS). The system instrumental resolution functions are obtained using the 514keV line from 85Sr. The technique when applied to a series of well annealed polycrystalline metals gives two photon momentum data on a quality comparable to that obtainable using ID Angular Correlation of Annihilation Radiation (ACAR).",

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booktitle = "Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13",

note = "The 13th International Conference on Positron Annihilation, ICPA-13, ICPA-13 ; Conference date: 07-09-2003 Through 12-09-2003",

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Ho, KF, Ching, HM, Cheng, KW, Beling, CD, Fung, S & Ng, KP 2004, Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms. in T Hyodo, Y Kobayashi, Y Nagashima & H Saito (eds), Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13. Materials Science Forum, vol. 445-446, Trans Tech Publications Ltd, pp. 477-479, The 13th International Conference on Positron Annihilation, ICPA-13, Kyoto, Japan, 7/09/03. https://doi.org/10.4028/www.scientific.net/msf.445-446.477

Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms. / Ho, K. F.; Ching, H. M.; Cheng, K. W. et al.
Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13. ed. / Toshio Hyodo; Yoshinori Kobayashi; Yasuyuki Nagashima; Haruo Saito. Trans Tech Publications Ltd, 2004. p. 477-479 (Materials Science Forum; Vol. 445-446).

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

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AU - Ng, K. P.

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AB - In the last few years a number of excellent deconvolution algorithms have been developed for use in "de-blurring" 2D images. Here we report briefly on one such algorithm we have studied which uses the non-negativity constraint to optimize the regularization and which is applied to the 2D image like data produced in Coincidence Doppler Broadening Spectroscopy (CDBS). The system instrumental resolution functions are obtained using the 514keV line from 85Sr. The technique when applied to a series of well annealed polycrystalline metals gives two photon momentum data on a quality comparable to that obtainable using ID Angular Correlation of Annihilation Radiation (ACAR).

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Ho KF, Ching HM, Cheng KW, Beling CD, Fung S, Ng KP. Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms. In Hyodo T, Kobayashi Y, Nagashima Y, Saito H, editors, Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13. Trans Tech Publications Ltd. 2004. p. 477-479. (Materials Science Forum). doi: 10.4028/www.scientific.net/msf.445-446.477

Optimized Coincidence Doppler Broadening Spectroscopy using deconvolution algorithms

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