Time-resolved XPCS analysis across broad time-scales using multi-tau two-time correlations

Brugnara, F.; Cammarata, M.; Chushkin, Y.; Festi, I.; Granata, M.; Hofman, D.; Leonardi, M.; Marzi, D.; Nabari, D.; Trapananti, A.; Ziglio, S.; Zontone, F.; Zanatta, M.; Baldi, G.

doi:10.1107/S1600577526002171

Journal of Synchrotron Radiation Journal of
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Figure 3
Illustration of the two-step sparse implementation of the multi-tau 2TC. Left: decomposition of the full $[{\bf G}^{(2)}_{\rm S}]$ into diagonal and off-diagonal sub-matrices computed from sparse blocks of I. Right: mapping of a 2TC sub-matrix into the multi-tau representation via successive binning and extraction of ch-offset diagonals. In this example, s = 4 and four channels are used. Double-colored entries indicate values used in different multi-tau correlators.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 33| Part 3| May 2026| Pages 698-707

https://doi.org/10.1107/S1600577526002171

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