Johannes
Niskanen
University Research Fellow, Materials Research Laboratory
X-rays are a unique probe of systems with a wide variation of atomistic structures: liquids and amorphous matter. I investigate the structural information content of these spectra.

Contact

+358 29 450 4160
+358 50 577 8622
Vesilinnantie 5
20500
Turku

Areas of expertise

X-ray
spectroscopy
molecule
liquids
statistical simulation
machine learning

Publications

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Inner-shell-ionization-induced femtosecond structural dynamics of water molecules imaged at an x-ray free-electron laser (2021)

Physical Review X
Jahnke T., Guillemin R., Inhester L., Son S.-K., Kastirke G., Ilchen M., Rist J., Trabert D., Melzer N., Anders N., Mazza T., Boll R., De Fanis A., Music V., Weber Th., Weller M., Eckart S., Fehre K., Grundmann S., Hartung A., Hofmann M., Janke C., Kircher M., Nalin G., Pier A., Siebert J., Strenger N., Vela-Perez I., Baumann T. M., Grychtol P., Montano J., Ovcharenko Y., Rennhack N., Rivas D. E., Wagner R., Ziolkowski P., Schmidt P., Marchenko T., Travnikova O., Journel L., Ismail I., Kukk E., Niskanen J., Trinter F., Vozzi C., Devetta M., Stagira S., Gisselbrecht M., Jäger A. L., Li X., Malakar Y., Martins M., Feifel R., Schmidt L. Ph., Czasch A., Sansone G., Rolles D., Rudenko A., Moshammer R., Dörner R., Meyer M., Pfeifer T., Schöffler M. S., Santra R., Simon M., Piancastelli M. N.
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Multi-channel photodissociation and XUV-induced charge transfer dynamics in strong-field-ionized methyl iodide studied with time-resolved recoil-frame covariance imaging (2021)

Faraday Discussions
Allum Felix, Anders Nils, Brouard Mark, Bucksbaum Phil H, Burt Michael, Downes-Ward Briony, Grundmann Sven, Harries James, Ishimura Yudai, Iwayama Hiroshi, Kaiser Leon, Kukk Edwin, Lee Jason WL, Liu Xiaojing, Minns Russell S, Nagaya Kiyonobu, Niozu Akinobu, Niskanen Johannes, O'Neal Jordan T, Owada Shigeki, Pickering James, Rolles Daniel, Rudenko Artem, Saito Shu, Ueda Kiyoshi, Vallance Claire, Werby Nicholas, Woodhouse Joanne, You Daehyun, Ziaee Farzaneh, Driver Taran, Forbes Ruaridh
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Time-resolved dynamics of thiophene dication - probing parent molecule survival times and multi-step dissociation processes of cyclic molecules by free-electron-laser experiments combined with theoretical simulations (2020)

International Conference on Photonic, Electronic and Atomic Collisions, Journal of Physics: Conference Series
Kukk E, Fukuzawa H, Nagaya K, Niskanen J, Luo Y, Peschel J, Kooser K, Itl E, Pelimanni E, Saito S, You D, Maclot S, Nizou A, Ha DT, Myllynen H, Ueda K
(Vertaisarvioitu artikkeli konferenssijulkaisussa (A4))

High-Precision Determination of Oxygen-Kα Transition Energy Excludes Incongruent Motion of Interstellar Oxygen (2020)

Physical Review Letters
M. A. Leutenegger, S. Kühn, P. Micke, R. Steinbrügge, J. Stierhof, C. Shah, N.Hell, M. Bissinger, M. Hirsch, R. Ballhausen, M. Lang, C. Gräfe, S. Wipf, R. Cumbee, G. L. Betancourt-Martinez, S. Park, V. A. Yerokhin, A. Surzhykov, W. C. Stolte, J. Niskanen, M. Chung, F. S. Porter, T. Stöhlker, T. Pfeifer, J. Wilms, G. V. Brown, J. R. Crespo López-Urrutia, S. Bernitt
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Compatibility of quantitative X-ray spectroscopy with continuous distribution models of water at ambient conditions (2019)

Proceedings of the National Academy of Sciences of the United States of America
Johannes Niskanen, Mattis Fondell, Christoph J. Sahle, Sebastian Eckert, Raphael M. Jay, Keith Gilmore, Annette Pietzsch, Marcus Dantz, Xingye Lu, Daniel E. McNally, Thorsten Schmitt, Vinicius Vaz da Cruz, Victor Kimberg, Faris Gel’mukhanov, Alexander Föhlisch
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
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