Zobrazeno 1 - 10
of 47
pro vyhledávání: '"C Ruhrmann"'
Autor:
A Bergner, M. Depta, C Ruhrmann, T. Höbing, Jos Suijker, Peter Awakowicz, Juergen Mentel, C Denissen
Publikováno v:
Contributions to Plasma Physics. 54:215-224
The gas phase emitter effect within ceramic metal halide (CMH) lamps reduces the effective work function of the electrode material and, therewith, the electrode temperature. An investigation of the gas phase emitter effect of thulium (Tm) within CMH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e8a8560afdb5a09a60968a42839207c
https://doi.org/10.1002/ctpp.201300042
https://doi.org/10.1002/ctpp.201300042
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Journal of Applied Physics. 119:113304
The hot restrike is one of the biggest challenges in operating ceramic metal halide lamps with mercury as buffer gas. Compared to a cold lamp, the pressure within a ceramic burner is two orders of magnitude higher during steady state operation due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::480653cde1ebab859be4c047a2c40cef
https://doi.org/10.1063/1.4943621
https://doi.org/10.1063/1.4943621
Publikováno v:
Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics, IOP Publishing, 2011, 44 (35), pp.355202. ⟨10.1088/0022-3727/44/35/355202⟩
Journal of Physics D: Applied Physics, IOP Publishing, 2011, 44 (35), pp.355202. ⟨10.1088/0022-3727/44/35/355202⟩
The work function and with it the temperature of tungsten electrodes in HID lamps can be lowered and the lifetime of lamps increased by the gas phase emitter effect. A determination of the emitter effect of Cs and Ce is performed by phase resolved me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fceb840ee90380cf05376ebc278d683
https://hal.archives-ouvertes.fr/hal-00649055
https://hal.archives-ouvertes.fr/hal-00649055
Publikováno v:
Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics, IOP Publishing, 2011, 44 (9), pp.95204. ⟨10.1088/0022-3727/44/9/095204⟩
Journal of Physics D: Applied Physics, IOP Publishing, 2011, 44 (9), pp.95204. ⟨10.1088/0022-3727/44/9/095204⟩
Phase-resolved temperature distributions are determined along a rod-shaped tungsten electrode, by which an ac arc is operated within a model lamp filled with argon. Switched dc and sinusoidal currents are applied with amplitudes of several amperes an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b899f87fa4e00c982bc74bf89018078a
https://hal.archives-ouvertes.fr/hal-00599244/document
https://hal.archives-ouvertes.fr/hal-00599244/document
Averaged plasma parameters such as electron distribution function and electron density are determined by characterization of high frequency (2.4 GHz) nitrogen plasma using both experimental methods, namely optical emission spectroscopy (OES) and micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22da4a7a2057b09ca084bc600b3f1acb
Autor:
Jos Suijker, T. Hoebing, C Ruhrmann, C Denissen, S Groeger, Peter Awakowicz, A Bergner, Juergen Mentel
Publikováno v:
Journal of Applied Physics. 118:053301
The gas phase emitter effect increases the lamp lifetime by lowering the work function and, with it, the temperature of the tungsten electrodes of metal halide lamps especially for lamps in ceramic vessels due to their high rare earth pressures. It i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62cb829d92b990e8d12b0f4998ab137d
https://doi.org/10.1063/1.4927734
https://doi.org/10.1063/1.4927734
Autor:
T. Hoebing, C Ruhrmann, I. Wesemann, H. Traxler, Patrick Hermanns, Peter Awakowicz, Juergen Mentel, A Bergner, W. Knabl
Publikováno v:
Journal of Applied Physics. 118:023306
Short-arc lamps are equipped with tungsten electrodes due to their ability to withstand a high thermal load during operation. Nominal currents of more than one hundred amperes lead to a cathode tip temperature near the melting point of tungsten. To r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5492542247736e9dc95eb1cd9b5ea3b
https://doi.org/10.1063/1.4926617
https://doi.org/10.1063/1.4926617
Autor:
C Ruhrmann, Peter Awakowicz, A Bergner, S Groeger, Max Engelhardt, Juergen Mentel, T. Hoebing, Stefan Bienholz
Publikováno v:
Journal of Physics D: Applied Physics. 48:025201
This paper considers the ignition of mercury-free high-intensity discharge (HID) lamps for car headlights. Due to safety reasons, these lamps need to have a fast run-up phase which is ensured, amongst other things, by a high Xe pressure of roughly 15
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::435b3357e22b6d59c4782167fedea87f
https://doi.org/10.1088/0022-3727/48/2/025201
https://doi.org/10.1088/0022-3727/48/2/025201
Publikováno v:
Plasma Sources Science and Technology
Recently, a constricted attachment of an atmospheric pressure low-current argon arc in the centre of the flat end face of a thoriated tungsten cathode was observed and spectroscopically analysed. Its diameter of 0.6mm and its length of the free stand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::544b56ea4016ec09583e4640c93db7e4
https://doi.org/10.1088/0963-0252/23/5/054005
https://doi.org/10.1088/0963-0252/23/5/054005