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PROF. DR. JÜRGEN MENTEL
Professor Emeritus
Leiter der Arbeitsgruppe Grundlagen der Elektrotechnik (1977-2001)
Adresse:
Ruhr-Universität Bochum
Fakultät für Elektrotechnik und Informationstechnik
Lehrstuhl für Angewandte Elektrodynamik und Plasmatechnik
Universitätsstraße 150
D-44801 Bochum
Raum:
ID 1/516
Telefon:
(+49)(0)234 / 702109
Fax:
(+49)(0)234/ 32-14230
Downloads:
Ausgewählte Veröffentlichungen:
- Carbon doping – A key for the substitute of thoriated tungsten
- The cataphoretic emitter effect exhibited in high intensity discharge lamp electrodes
- What fore high intensity discharge lamps are beneficial in the age of LEDs
- Change of the arc attachment mode and its effect on the lifetime in automotive high intensity discharge lamps
- The anodic emitter effect and its inversion demonstrated by temperature measurements at doped and undoped tungsten electrodes
- Antenna induced hot restrike of a ceramic metal halide lamp recorded by high-speed photography
- The gas phase emitter effect of lanthanum within ceramic metal halide lamps and its dependence on the La vapor pressure and operating frequency
- Investigation of the flickering of La2O3 and ThO2 doped tungsten cathodes
- Investigating antennas as ignition aid for automotive HID lamps
- Simulation of the hot core mode of arc attachment at a thoriated tungsten cathode by an emitter spot model
- Investigating the outer-bulb discharge as ignition aid for automotive-HID lamps
- The effect of active antennas on the hot-restrike of high intensity discharge lamps
- Gas Phase Emitter Effect of Thulium within Ceramic Metal Halide Lamps in Dependence on Frequency
- Combining emission and absorption spectroscopy at rare earth spectral lines: plasma temperature measurements in ceramic metal halide lamps
- A study of electrode temperature lowering in Dy-containing ceramic metal halide lamps: II. An investigation of the converse effect of Tl and/or Na additives
- A study of electrode temperature lowering in Dy-containing ceramic metal halide lamps: I. The effect of mixtures of Dy, Tl and Na compared with pure Dy
- Temperature measurements at thoriated tungsten electrodes in a model lamp and their interpretation by numerical simulation
- Investigating the gas phase emitter effect of caesium and cerium in ceramic metal halide lamps in dependence on the operating frequency
- Investigating the influence of the operating frequency on the gas phase emitter effect of dysprosium in ceramic metal halide lamps
- Investigating the dependence of the temperature of high-intensity discharge (HID) lamp electrodes on the operating frequency by pyrometric measurements
- Measurement of Ba-densities close to the electrode in an HPS-lamp by broadband absorption spectroscopy with a UHP-lamp
- The gas phase emitter effect at the anode in a high pressure sodium vapour discharge
- The anode region of low current arcs in high intensity discharge lamps
Veröffentlichungen
Frohnert, S., & Mentel, J. (2022). Investigation of the interaction of dense noble gas plasmas with cold cathodes: II Arc spot ignition on Au, Pd and Pt cathodes. Contributions to Plasma Physics, 62(7). https://doi.org/10.1002/ctpp.202100214 Cite
Frohnert, S., & Mentel, J. (2022). Investigation of the interaction of dense noble gas plasmas with cold cathodes: I—Experimental setup and application to Al, Cu, Ti, and graphite cathodes. Contributions to Plasma Physics, 62(7). https://doi.org/10.1002/ctpp.202100212 Cite
Frohnert, S., & Mentel, J. (2022). Investigation of the interaction of dense noble gas plasmas with cold cathodes: III —Arc spot ignition on pure and doped W cathodes. Contributions to Plasma Physics, 62(7). https://doi.org/10.1002/ctpp.202100216 Cite
Traxler, H., Wesemann, I., Knabl, W., Nilius, M., Morkel, M., Höbing, T., Mentel, J., & Awakowicz, P. (2018). Carbon doping - A key for the substitute of thoriated tungsten. International Journal of Refractory Metals and Hard Materials, 74, 93–98. https://doi.org/10.1016/j.ijrmhm.2018.02.016 Cite
Alexejev, A., Flesch, P., Mentel, J., & Awakowicz, P. (2016). Change of the arc attachment mode and its effect on the lifetime in automotive high intensity discharge lamps. Journal of Applied Physics, 120(13), 133301. https://doi.org/10.1063/1.4963280 Cite
Hoebing, T., Bergner, A., Hermanns, P., Mentel, J., & Awakowicz, P. (2016). The anodic emitter effect and its inversion demonstrated by temperature measurements at doped and undoped tungsten electrodes. Journal of Physics D: Applied Physics, 49(15), 155504. https://doi.org/10.1088/0022-3727/49/15/155504 Cite
Hermanns, P., Hoebing, T., Bergner, A., Ruhrmann, C., Awakowicz, P., & Mentel, J. (2016). Antenna induced hot restrike of a ceramic metal halide lamp recorded by high-speed photography. Journal of Applied Physics, 119(11), 113304. https://doi.org/10.1063/1.4943621 Cite
Ruhrmann, C., Hoebing, T., Bergner, A., Groeger, S., Denissen, C., Suijker, J., Awakowicz, P., & Mentel, J. (2015). The gas phase emitter effect of lanthanum within ceramic metal halide lamps and its dependence on the La vapor pressure and operating frequency. Journal of Applied Physics, 118(5), 053301. https://doi.org/10.1063/1.4927734 Cite
Hoebing, T., Hermanns, P., Bergner, A., Ruhrmann, C., Traxler, H., Wesemann, I., Knabl, W., Mentel, J., & Awakowicz, P. (2015). Investigation of the flickering of La 2 O 3 and ThO 2 doped tungsten cathodes. Journal of Applied Physics, 118(2), 023306. https://doi.org/10.1063/1.4926617 Cite
Bergner, A., Engelhardt, M., Bienholz, S., Ruhrmann, C., Hoebing, T., Groeger, S., Mentel, J., & Awakowicz, P. (2015). Investigating antennas as ignition aid for automotive HID lamps. Journal of Physics D: Applied Physics, 48(2), 025201. https://doi.org/10.1088/0022-3727/48/2/025201 Cite
Bergner, A., Scharf, F. H., Kühn, G., Ruhrmann, C., Hoebing, T., Awakowicz, P., & Mentel, J. (2014). Simulation of the hot core mode of arc attachment at a thoriated tungsten cathode by an emitter spot model. Plasma Sources Science and Technology, 23(5), 054005. https://doi.org/10.1088/0963-0252/23/5/054005 Cite
Bergner, A., Groeger, S., Hoebing, T., Ruhrmann, C., Hechtfischer, U., Tochadse, G., Mentel, J., & Awakowicz, P. (2014). Investigating the outer-bulb discharge as ignition aid for automotive-HID lamps. Journal of Physics D: Applied Physics, 47(35), 355204. https://doi.org/10.1088/0022-3727/47/35/355204 Cite
Hoebing, T., Bergner, A., Koch, B., Manders, F., Ruhrmann, C., Mentel, J., & Awakowicz, P. (2014). The effect of active antennas on the hot-restrike of high intensity discharge lamps. Journal of Physics D: Applied Physics, 47(20), 205501. https://doi.org/10.1088/0022-3727/47/20/205501 Cite
Ruhrmann, C., Depta, M., Bergner, A., Höbing, T., Denissen, C., Suijker, J., Mentel, J., & Awakowicz, P. (2014). Gas Phase Emitter Effect of Thulium within Ceramic Metal Halide Lamps in Dependence on Frequency: Gas Phase Emitter Effect of Thulium within Ceramic Metal Halide Lamps in Dependence on Frequency. Contributions to Plasma Physics, 54(2), 215–224. https://doi.org/10.1002/ctpp.201300042 Cite
Ruhrmann, C., Westermeier, M., Höbing, T., Bergner, A., Denissen, C., Suijker, J., Awakowicz, P., & Mentel, J. (2013). Combining emission and absorption spectroscopy at rare earth spectral lines: plasma temperature measurements in ceramic metal halide lamps. Journal of Physics D: Applied Physics, 46(29), 295202. https://doi.org/10.1088/0022-3727/46/29/295202 Cite
Westermeier, M., Ruhrmann, C., Bergner, A., Denissen, C., Suijker, J., Awakowicz, P., & Mentel, J. (2013). A study of electrode temperature lowering in Dy-containing ceramic metal halide lamps: II. An investigation of the converse effect of Tl and/or Na additives. Journal of Physics D: Applied Physics, 46(18), 185202. https://doi.org/10.1088/0022-3727/46/18/185202 Cite
Westermeier, M., Ruhrmann, C., Bergner, A., Denissen, C., Suijker, J., Awakowicz, P., & Mentel, J. (2013). A study of electrode temperature lowering in Dy-containing ceramic metal halide lamps: I. The effect of mixtures of Dy, Tl and Na compared with pure Dy. Journal of Physics D: Applied Physics, 46(18), 185201. https://doi.org/10.1088/0022-3727/46/18/185201 Cite
Bergner, A., Westermeier, M., Ruhrmann, C., Awakowicz, P., & Mentel, J. (2011). Temperature measurements at thoriated tungsten electrodes in a model lamp and their interpretation by numerical simulation. Journal of Physics D: Applied Physics, 44(50), 505203. https://doi.org/10.1088/0022-3727/44/50/505203 Cite
Ruhrmann, C., Westermeier, M., Bergner, A., Luijks, G. M. J. F., Awakowicz, P., & Mentel, J. (2011). Investigating the gas phase emitter effect of caesium and cerium in ceramic metal halide lamps in dependence on the operating frequency. Journal of Physics D: Applied Physics, 44(35), 355202. https://doi.org/10.1088/0022-3727/44/35/355202 Cite
Reinelt, J., Westermeier, M., Ruhrmann, C., Bergner, A., Luijks, G. M. J. F., Awakowicz, P., & Mentel, J. (2011). Investigating the influence of the operating frequency on the gas phase emitter effect of dysprosium in ceramic metal halide lamps. Journal of Physics D: Applied Physics, 44(29), 299601. https://doi.org/10.1088/0022-3727/44/29/299601 Cite
Reinelt, J., Westermeier, M., Ruhrmann, C., Bergner, A., Awakowicz, P., & Mentel, J. (2011). Investigating the dependence of the temperature of high-intensity discharge (HID) lamp electrodes on the operating frequency by pyrometric measurements. Journal of Physics D: Applied Physics, 44(9), 095204. https://doi.org/10.1088/0022-3727/44/9/095204 Cite
Westermeier, M., Reinelt, J., Luijks, G., Mentel, J., & Awakowicz, P. (2010). Measurement of Ba-densities close to the electrode in an HPS-lamp by broadband absorption spectroscopy with a UHP-lamp. Journal of Physics D: Applied Physics, 43(12), 124015. https://doi.org/10.1088/0022-3727/43/12/124015 Cite
Czichy, M., Hartmann, T., Mentel, J., & Awakowicz, P. (2008). Ignition of mercury-free high intensity discharge lamps. Journal of Physics D: Applied Physics, 41(14), 144027. https://doi.org/10.1088/0022-3727/41/14/144027 Cite
Langenscheidt, O., Westermeier, M., Reinelt, J., Mentel, J., & Awakowicz, P. (2008). Investigation of the gas-phase emitter effect of dysprosium in ceramic metal halide lamps. Journal of Physics D: Applied Physics, 41(14), 144005. https://doi.org/10.1088/0022-3727/41/14/144005 Cite
Reinelt, J., Langenscheidt, O., Westermeier, M., Awakowicz, P., & Mentel, J. (2008). Development of the arc attachment at HID lamp electrodes in the range from low to RF-frequencies. Journal of Physics D: Applied Physics, 41(14), 144002. https://doi.org/10.1088/0022-3727/41/14/144002 Cite
Westermeier, M., Langenscheidt, O., Reinelt, J., Mentel, J., & Awakowicz, P. (2008). Visualization of the Gas-Phase Emitter Effect of Dysprosium in Ceramic Metal Halide Lamps. IEEE Transactions on Plasma Science, 36(4), 1176–1177. https://doi.org/10.1109/TPS.2008.924550 Cite
Langenscheidt, O., Lichtenberg, S., Dabringhausen, L., Redwitz, M., Awakowicz, P., & Mentel, J. (2007). The boundary layers of ac-arcs at HID-electrodes: phase resolved electrical measurements and optical observations. Journal of Physics D: Applied Physics, 40(2), 415–431. https://doi.org/10.1088/0022-3727/40/2/019 Cite
