Postdoc

Dr. Gregor Hartmann

Room
Picture of Dr. Gregor  Hartmann

Publications

2019

Hans, A., Schmidt, P., Ozga, C., Richter, C., Otto, H., Holzapfel, X., Hartmann, G. P. M., Ehresmann, A., Hergenhahn, U., & Knie, A. (2019). Efficient Fluorescence Quenching by Distant Production of a Free Electron. Journal of Physical Chemistry Letters, (10), 1078–1082.
Hans, A., Ozga, C., Schmidt, P., Hartmann, G. P. M., Nehls, A., Wenzel, P., Richter, C., Lant, C., Holzapfel, X., Viehmann, J., Hergenhahn, U., Ehresmann, A., & Knie, A. (2019). Setup for multicoincidence experiments of photons in the extreme ultraviolet to visible spectral range and charged particles—The solid angle maximization approach. Review of Scientific Instruments, (90), 093104. https://doi.org/https://doi.org/10.1063/1.5109104
Hans, A., Miteva, T., Holzapfel, X., Ozga, C., Schmidt, P., Otto, H., Hartmann, G. P. M., Richter, C., Sisourat, N., Ehresmann, A., Gokhberg, K., Hergenhahn, U., & Knie, A. (2019). Electronic Decay of Singly Charged Ground-State Ions by Charge Transfer via van der Waals Bonds. Physical Review Letters, 123(21), 213001. https://doi.org/10.1103/PhysRevLett.123.213001

2018

Ilchen, M., Hartmann, G. P. M., Gryzlova, E. V., Achner, A., Allaria, E., Beckmann, A., Braune, M., Buck, J., Callegari, C., Coffee, R. N., Cucini, R., Danailov, M. B., De Fanis, A., Demidovich, A., Ferrari, E., Finetti, P., Glaser, L., Knie, A., Lindahl, A. O., Plekan, O., Mahne, N., Mazza, T., Raimondi, L., Roussel, E., Scholz, F., Seltmann, J., Shevchuk, I., Svetina, C., Walter, P., Zangrando, M., Viefhaus, J., Grum-Grzhimailo, A. N., & Meyer, M. (2018). Symmetry breakdown of electron emission in extreme ultraviolet photoionization of argon. Nature Communications, 9(1), 4659. https://doi.org/10.1038/s41467-018-07152-7
Hans, A., Schmidt, P., Ozga, C., Hartmann, G. P. M., Holzapfel, X., Ehresmann, A., & Knie, A. (2018). Extreme Ultraviolet to Visible Dispersed Single Photon Detection for Highly Sensitive Sensing of Fundamental Processes in Diverse Samples. Materials, 11, 869. https://doi.org/10.3390/ma11060869
Hartmann, N., Hartmann, G. P. M., Heider, R., & Wagner, M. S., et al. (2018). Attosecond time–energy structure of X-ray free-electron laser pulses. Nature Photonics, 12(4), 215–220.
Müller, L., & Hartmann, G. P. M., et al. (2018). Note: Soft X-ray transmission polarizer based on ferromagnetic thin films. Review of Scientific Instruments, 2018/89(3), 036103.

2017

Ilchen, M., Hartmann, G. P. M., Rupprecht, P., Artemyev, A. N., Coffee, R. N., Liu, Z., Ohldag, H., Ogasawara, H., Osipov, T., Ray, D., Schmidt, P., Wolf, T. J. A., Ehresmann, A., Moeller, S., Knie, A., & Demekhin, P. V. (2017). Emitter-site-selective photoelectron circular dichroism of trifluoromethyloxirane. Physical Review A, 95(5), 053423. https://doi.org/10.1103/PhysRevA.95.053423
Korff Schmising, C., Weder, D., Noll, T., Pfau, B., Hennecke, M., Strüber, C., Radu, I., Schneider, M., Staeck, S., Günther, C., Lüning, J., Merhe, A. E. D., Buck, J., Hartmann, G. P. M., Viefhaus, J., Treusch, R., & Eisebitt, S. (2017). Generating circularly polarized radiation in the extreme ultraviolet spectral range at the free-electron laser FLASH. The Review of scientific instruments, 88(5), 053903. https://doi.org/10.1063/1.4983056
Sanchez-Gonzalez, A., Micaelli, P., Olivier, C., Barillot, T. R., Ilchen, M., Lutman, A. A., Marinelli, A., Maxwell, T., Achner, A., Agraker, M., Berrah, N., Bostedt, C., Bozek, J. D., Buck, J., Bucksbaum, P. H., Montero, S. C., Cooper, B., Cryan, J. P., Dong, M., Feifel, R., Frasinski, L. J., Fukuzawa, H., Galler, A., Hartmann, G. P. M., Helml, W., Johnson, A. S., Lindahl, A. O., Knie, A., Liu, J., Motomura, K., Mucke, M., O’Grady, C., Rubensson, J.-E., Simpson, E. R., Squibb, R. J., Strathe, C., Ueda, K., Ueda, K., Vacher, M., Walke, D. J., Zhaunerchyk, V., Coffee, R. N., & Marangos, J. P. (2017). Accurate prediction of X-ray pulse properties from a free-electron laser using machine learning. Nature Communications, 8, 15461. https://doi.org/10.1038/ncomms15461

2016

Hartmann, G. P. M., Lindahl, A. O., Knie, A., Lutman, A. A., MacArthur, J. P., Shevchuk, I., Buck, J., Galler, A., Glownia, J. M., Helml, W., Huang, Z., Kabachnik, N. M., Kazansky, A. K., Liu, J., Marinelli, A., Mazza, T., Nuhn, H.-D., Walter, P., Viefhaus, J., Meyer, M., Moeller, S., Coffee, R. N., & Ilchen, M. (2016). Circular dichroism measurements at an x-ray free-electron laser with polarization control. Review of Scientific Instruments, 87(8), 83113. https://doi.org/10.1063/1.4961470