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Identifying pure components in mixtures is a common yet challenging problem. The associated unmixing process requires the pure components, also known as endmembers, to be sufficiently spectrally distinct. Even with this requirement met, extracting th
Externí odkaz:
http://arxiv.org/abs/2308.13117
By circumventing the resolution limitations of optics, coherent diffractive imaging (CDI) and ptychography are making their way into scientific fields ranging from X-ray imaging to astronomy. Yet, the need for time consuming iterative phase recovery
Externí odkaz:
http://arxiv.org/abs/2306.11014
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)
Abstract By circumventing the resolution limitations of optics, coherent diffractive imaging (CDI) and ptychography are making their way into scientific fields ranging from X-ray imaging to astronomy. Yet, the need for time consuming iterative phase
Externí odkaz:
https://doaj.org/article/6db33227cdc646a98b8f2c058c5a9929
Publikováno v:
Applied Sciences, Vol 14, Iss 11, p 4836 (2024)
Spectral unmixing attempts to decompose a spectral ensemble into the constituent pure spectral signatures (called endmembers) along with the proportion of each endmember. This is essential for techniques like hyperspectral imaging (HSI) used in envir
Externí odkaz:
https://doaj.org/article/882ebc31e7244cbf938c5a68731c8b53
Autor:
Holden, William M., Hoidn, Oliver R., Ditter, Alexander S., Seidler, Gerald T., Kas, Joshua, Stein, Jennifer L., Cossairt, Brandi M., Kozimor, Stosh A., Guo, Jinghua, Ye, Yifan, Marcus, Matthew A., Fakra, Sirine
X-ray emission spectroscopy is emerging as an important complement to x-ray absorption fine structure spectroscopy, providing a characterization of the occupied electronic density of states local to the species of interest. Here, we present details o
Externí odkaz:
http://arxiv.org/abs/1704.07496
Autor:
Hoidn, Oliver R., Seidler, Gerald T.
Publikováno v:
Phys. Rev. B 97, 035145 (2018)
The extremely high power densities and short durations of single pulses of x-ray free electron lasers (XFELs) have opened new opportunities in atomic physics, where complex excitation-relaxation chains allow for high ionization states in atomic and m
Externí odkaz:
http://arxiv.org/abs/1704.04348
Akademický článek
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Autor:
Hoidn, Christian M.1 (AUTHOR), Trabitsch, Karolina1 (AUTHOR), Schwedtmann, Kai2 (AUTHOR), Taube, Clemens2 (AUTHOR), Weigand, Jan J.2 (AUTHOR) jan.weigand@tu-dresden.de, Wolf, Robert1 (AUTHOR) robert.wolf@ur.de
Publikováno v:
Chemistry - A European Journal. 10/9/2023, Vol. 29 Issue 56, p1-8. 8p.
Autor:
Seidler, G. T., Mortensen, D. R., Remesnik, A. J., Pacold, J. I., Ball, N. A., Barry, N., Styczinski, M., Hoidn, O. R.
We report the development of a laboratory-based Rowland-circle monochromator that incorporates a low poer x-ray (bremsstrahlung) tube source, a spherically-bent crystal analyzer (SBCA), and an energy-resolving solid-state detector. This relatively in
Externí odkaz:
http://arxiv.org/abs/1410.5901
Autor:
Hoidn, O. R., Seidler, G. T.
The low repetition rates and possible shot-to-shot variations in laser-plasma studies place a high value on single-shot diagnostics. For example, white-beam scattering methods based on broadband backlighter x-ray sources are used to determine changes
Externí odkaz:
http://arxiv.org/abs/1310.2326