Researcher Portfolio
Friedl, Roland
ITER Technology & Diagnostics (ITED), Max Planck Institute for Plasma Physics, Max Planck Society, Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society
Researcher Profile
Position: ITER Technology & Diagnostics (ITED), Max Planck Institute for Plasma Physics, Max Planck Society
Position: Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society
Additional IDs: ORCID:
https://orcid.org/0000-0002-5723-994X
Researcher ID: https://pure.mpg.de/cone/persons/resource/persons109117
Publications
(1 - 25 of 43)
: Yordanov, D., Wünderlich, D., Friedl, R., Wimmer, C., Heiler, A., & Fantz, U. (2024). Plasma property investigations during negative ion beam extraction in a half-sized ITER NBI ion source at ELISE test facility. Poster presented at 33rd Symposium on Fusion Technology (SOFT 2024), Dublin. [PubMan] : Fantz, U., & Friedl, R. (2024). Plasmaphysik. Vorlesung (WS 2024/2025). Universität Augsburg, 2024-10-24. [PubMan] : Klose, N., Heiler, A., Vlachos, D., Friedl, R., & Fantz, U. (2024). Work Function of Caesiated Molybdenum Surfaces under Different Water Vapor Pressures and Surface Temperatures. Poster presented at 38th Panhellenic Conference on Solid State Physics and Materials Science, Ioannina. [PubMan] : Friedl, R., Fröhler-Bachus, C., & Fantz, U. (2024). Determining absolute VUV fluxes for assessing the relevance of photon-surface interaction in ion sources. Journal of Physics: Conference Series, 2743: 012011. doi:10.1088/1742-6596/2743/1/012011. [PubMan] : Wolf, V., Friedl, R., & Fantz, U. (2024). Formation of ammonia in a surfaguide discharge assisted by catalysis. Poster presented at DPG-Frühjahrstagung 2024, Greifswald. [PubMan] : Klose, N., Heiler, A., Vlachos, D., Friedl, R., & Fantz, U. (2024). Work Function of Caesiated Molybdenum Surfaces under Different Water Partial Pressures and Surface Temperatures. Talk presented at 9th International Symposium on Negative Ions, Beams and Sources (NIBS 2024). Gandhinagar Gujarat. 2024-11-19 - 2024-11-22. [PubMan] : Fantz, U., & Friedl, R. (2023). Plasmaphysik. Vorlesung (WS 2023/2024). Universität Augsburg. [PubMan] : Friedl, R., Fröhler-Bachus, C., & Fantz, U. (2023). Determining absolute VUV fluxes for assessing the relevance of photon-surface interaction in ion sources. Talk presented at 20th International Conference on Ion Sources (ICIS 2023). Victoria, BC. 2023-09-17 - 2023-09-22. [PubMan] : Heiler, A., Friedl, R., & Fantz, U. (2022). Ultra-low work function of caesiated surfaces and impact of specific hydrogen plasma species. Talk presented at 8th International Symposium on Negative Ions, Beams and Sources (NIBS 2022). Padova, Virtual. 2022-10-02 - 2022-10-07. [PubMan] : Fantz, U., & Friedl, R. (2022). Plasmaphysik. Vorlesung (WS 2022/2023). Universität Augsburg. [PubMan] : Heiler, A., Friedl, R., & Fantz, U. (2022). Impact of the photoelectric threshold sensitivity on the work function determination – Revealing ultra-low work functions of caesiated surfaces. AIP Advances, 12: 035339. doi:10.1063/5.0078380. [PubMan] : Wünderlich, D., Briefi, S., Friedl, R., & Fantz, U. (2021). Emission spectroscopy of negative hydrogen ion sources: From VUV to IR. Review of Scientific Instruments, 92: 123510. doi:10.1063/5.0075491. [PubMan] : Heiler, A., Friedl, R., & Fantz, U. (2020). Application of a Langmuir probe AC technique for reliable access to the low energy range of electron energy distribution functions in low pressure plasmas featured. Journal of Applied Physics, 127: 113302. doi:10.1063/1.5139601. [PubMan] : Heiler, A., Friedl, R., & Fantz, U. (2019). Determination of the EEDF by a Langmuir probe AC technique in low pressure ICPs. Talk presented at DPG-Frühjahrstagung 2019 der Sektion Materie und Kosmos (SMuK). München. 2019-03-17 - 2019-03-22. [PubMan] : Fantz, U., Heiler, A., & Friedl, R. (2018). Application of an AC method for measuring the EEDF in low pressure plasmas by a Langmuir probe. Poster presented at 24th Europhysics Conference on the Atomic and Molecular Physics of Ionized Gases (ESCAMPIG 2018), Glasgow. [PubMan] : Kurutz, U., Friedl, R., & Fantz, U. (2017). Investigations on Cs-free alternatives for negative ion formation in a low pressure hydrogen discharge at ion source relevant parameters. Plasma Physics and Controlled Fusion, 59: 075008. doi:10.1088/1361-6587/aa7120. [PubMan] : Friedl, R., & Fantz, U. (2017). Influence of H2 and D2 plasmas on the work function of caesiated materials. Journal of Applied Physics, 122: 083304. doi:10.1063/1.5000373. [PubMan] : Friedl, R., Rauner, D., & Fantz, U. (2018). Dissociative recombination and its impact on the line profile of the hydrogen Balmer series. Poster presented at 82. Jahrestagung der DPG und DPG-Frühjahrstagung der Sektion AMOP, Erlangen. [PubMan] : Fantz, U., Briefi, S., Friedl, R., Fröhler, C., Rauner, D., & Wünderlich, D. (2016). Quantification of UV/VUV photon fluxes of hydrogen plasmas by spectroscopy and by collisional radiative modelling. Poster presented at 33rd International Conference on Phenomena in Ionized Gases (ICPIG 2017), Lisbon. [PubMan] : Friedl, R., Kurutz, U., & Fantz, U. (2016). Efficiency of Cs-free materials for negative hydrogen ion production. Talk presented at 5th International Symposium on Negative Ions, Beams and Sources (NIBS 2016). Oxford. 2016-09-12 - 2016-09-16. [PubMan] : Cristofaro, S., Friedl, R., & Fantz, U. (2016). Comparison between measured and modeled densities of negative hydrogen ions in an ICP discharge. Poster presented at DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Plasmen (SAMOP), Hannover. [PubMan] : Fantz, U., Briefi, S., Friedl, R., Kammerloher, M., Kolbinger, J., & Oswald, A. (2014). Initial Phase of a Large Atmospheric Plasmoid Generated above a Water Surface. IEEE Transactions on Plasma Science, 42(10), 2624-2625. doi:10.1109/TPS.2014.2310128. [PubMan] : Friedl, R.(2014). Experimental investigations on the caesium dynamics in H2/D2 low temperature plasmas (IPP 4/293). Garching: Max-Planck-Institut für Plasmaphysik. [PubMan] : Friedl, R., & Fantz, U. (2014). Fundamental studies on the Cs dynamics under ion source conditions. Review of Scientific Instruments, 85: 02B109. [PubMan] : Fröschle, M., Friedl, R., Kammerloher, M., Riedl, R., & Steinberger, J. (2014). Concepts of Caseium Evaporation and Control at IPP. Poster presented at 4th International Symposium on Negative Ions, Beams and Sources (NIBS 2014), Garching. [PubMan]