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Toward real-time charged-particle image reconstruction using polar onion-peeling

Roberts, G.M.; Nixon, J.L.; Lecointre, J.; Wrede, E.; Verlet, J.R.R.

Toward real-time charged-particle image reconstruction using polar onion-peeling Thumbnail


Authors

G.M. Roberts

J.L. Nixon

J. Lecointre



Abstract

A method to reconstruct full three-dimensional photofragment distributions from their two-dimensional (2D) projection onto a detection plane is presented, for processes in which the expanding Newton sphere has cylindrical symmetry around an axis parallel to the projection plane. The method is based on: (1) onion-peeling in polar coordinates [ Zhao et al., Rev. Sci. Instrum. 73, 3044 (2002) ] in which the contribution to the 2D projection from events outside the plane bisecting the Newton sphere are subtracted in polar coordinates at incrementally decreasing radii; and (2) ideas borrowed from the basis set expansion (pBASEX) method in polar coordinates [ Garcia et al., Rev. Sci. Instrum. 75, 4989 (2004) ], which we use to generate 2D projections at each incremental radius for the subtraction. Our method is as good as the pBASEX method in terms of accuracy, is devoid of centerline noise common to reconstruction methods employing Cartesian coordinates; and it is computationally cheap allowing images to be reconstructed as they are being acquired in a typical imaging experiment.

Citation

Roberts, G., Nixon, J., Lecointre, J., Wrede, E., & Verlet, J. (2009). Toward real-time charged-particle image reconstruction using polar onion-peeling. Review of Scientific Instruments, 80(5), Article 053104. https://doi.org/10.1063/1.3126527

Journal Article Type Article
Publication Date May 1, 2009
Deposit Date Mar 16, 2011
Publicly Available Date Oct 29, 2012
Journal Review of Scientific Instruments
Print ISSN 0034-6748
Electronic ISSN 1089-7623
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 80
Issue 5
Article Number 053104
DOI https://doi.org/10.1063/1.3126527
Keywords Image reconstruction, Molecule-photon collisions, Particle detectors.
Public URL https://durham-repository.worktribe.com/output/1533964

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Copyright Statement
Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Roberts, G. M. and Nixon, J. L. and Lecointre, J. and Wrede, E. and Verlet, J. R. R. (2009) 'Toward real-time charged-particle image reconstruction using polar onion-peeling.', Review of scientific instruments., 80 (5). 053104 and may be found at http://dx.doi.org/10.1063/1.3126527





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