Multiscale wavelet decomposition of time-resolved X-ray diffraction signals in cyclohexadiene
Abstract
We demonstrate how the wavelet transform, which is a powerful tool for compression, filtering, and scaling analysis of signals, may be used to separate large- and short-scale electron density features in X-ray diffraction patterns. Wavelets can isolate the electron density associated with delocalized bonds from the much stronger background of highly localized core electrons. The wavelet-processed signals clearly reveal the bond formation and breaking in the early steps of the photoinduced pericyclic ring opening reaction of 1,3-cyclohexadiene, which are not resolved in the bare signal.
- Publication Date:
- Research Org.:
- Univ. of California, Irvine, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1473735
- Alternate Identifier(s):
- OSTI ID: 1609510
- Grant/Contract Number:
- FG02-04ER15571; CHE-1663822
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 115 Journal Issue: 41; Journal ID: ISSN 0027-8424
- Publisher:
- National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; chemical reaction movies; conical intersections; multiscale charge denisty; analysis; ultrafast X-ray diffraction; wavelet transform
Citation Formats
Osipov, Vladimir Al., Kowalewski, Markus, and Mukamel, Shaul. Multiscale wavelet decomposition of time-resolved X-ray diffraction signals in cyclohexadiene. United States: N. p., 2018.
Web. doi:10.1073/pnas.1811983115.
Osipov, Vladimir Al., Kowalewski, Markus, & Mukamel, Shaul. Multiscale wavelet decomposition of time-resolved X-ray diffraction signals in cyclohexadiene. United States. https://doi.org/10.1073/pnas.1811983115
Osipov, Vladimir Al., Kowalewski, Markus, and Mukamel, Shaul. Tue .
"Multiscale wavelet decomposition of time-resolved X-ray diffraction signals in cyclohexadiene". United States. https://doi.org/10.1073/pnas.1811983115.
@article{osti_1473735,
title = {Multiscale wavelet decomposition of time-resolved X-ray diffraction signals in cyclohexadiene},
author = {Osipov, Vladimir Al. and Kowalewski, Markus and Mukamel, Shaul},
abstractNote = {We demonstrate how the wavelet transform, which is a powerful tool for compression, filtering, and scaling analysis of signals, may be used to separate large- and short-scale electron density features in X-ray diffraction patterns. Wavelets can isolate the electron density associated with delocalized bonds from the much stronger background of highly localized core electrons. The wavelet-processed signals clearly reveal the bond formation and breaking in the early steps of the photoinduced pericyclic ring opening reaction of 1,3-cyclohexadiene, which are not resolved in the bare signal.},
doi = {10.1073/pnas.1811983115},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 41,
volume = 115,
place = {United States},
year = {2018},
month = {9}
}
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https://doi.org/10.1073/pnas.1811983115
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