63 citations · 77 across the 7 of their papers we have counts for
8 papers
Inner product regularized multi-energy X-ray tomography for material decomposition
Salla-Maaria Latva-Äijö, Filippo Zanetti, Ari-Pekka Honkanen +4
Multi-energy X-ray tomography is studied for decomposing three materials using three X-ray energies and a classical energy-integrating detector. A novel regularization term compris…
Monochromatic computed tomography using laboratory-scale setup: proof-of-concept
Ari-Pekka Honkanen, Simo Huotari
In this article, we demonstrate the viability of highly monochromatic full-field X-ray absorption near edge structure based tomography using a laboratory-scale Johann-type X-ray ab…
Redox oscillations in 18650-type lithium-ion cell revealed by in operando Compton scattering imaging
Kosuke Suzuki, Shunta Suzuki, Yuji Otsuka +12
Compton scattering imaging using high-energy synchrotron x-rays allows the visualization of the spatio-temporal lithiation state in lithium-ion batteries probed in-operando. Here,…
General method to calculate the elastic deformation and X-ray diffraction properties of bent crystal wafers
Ari-Pekka Honkanen, Simo Huotari
Curved single crystals are widely employed in spectrometer designs in the hard X-ray regime. Due to their large solid angle coverage and focusing properties, toroidally bent crysta…
Johann-type laboratory-scale X-ray absorption spectrometer with versatile detection modes
Ari-Pekka Honkanen, Sami Ollikkala, Taru Ahopelto +3
We present a low-cost laboratory X-ray absorption spectrometer that uses a conventional X-ray tube source and bent Johann-type crystal monochromators. The instrument is designed fo…
A finite element approach to dynamical diffraction problems
Ari-Pekka Honkanen, Claudio Ferrero, Jean-Pierre Guigay +1
A finite element approach to solve numerically the Takagi-Taupin equations expressed in a weak form is presented and applied to simulate X-ray reflectivity curves, spatial intensit…