Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Alexander Spethmann"'
Autor:
Alexander Spethmann, Thomas Trottenberg, Holger Kersten, Franz Georg Hey, Lou Grimaud, Stéphane Mazouffre, Daniel Bock, Martin Tajmar
Publikováno v:
EPJ Techniques and Instrumentation, Vol 9, Iss 1, Pp 1-12 (2022)
Abstract Diagnostics with force probes in plumes of electric propulsion systems for spacecraft (thrusters) are presented. This contribution focuses on showing example measurements with force probes for the most common gridless ion thruster types. The
Externí odkaz:
https://doaj.org/article/050dee3b65974b439916a1e2f2a61755
Autor:
Thomas Trottenberg, Florian Bansemer, Stephan Böttcher, Davar Feili, Hartmut Henkel, Marcel Hesse, Holger Kersten, Tony Krüger, Jens Laube, Alexey Lazurenko, Daniel Sailer, Björn Schuster, Lars Seimetz, Alexander Spethmann, Stefan Weis, Robert F. Wimmer-Schweingruber
Publikováno v:
EPJ Techniques and Instrumentation, Vol 8, Iss 1, Pp 1-23 (2021)
Abstract The plasma diagnostics presented in this article target the plasma surrounding a spacecraft that is created by the electric thruster and its surface modifying effects. The diagnostic package includes a retarding potential analyzer, a plane L
Externí odkaz:
https://doaj.org/article/2e9d4fb66fd249d9aeaa2c6fee9db6eb
Publikováno v:
EPJ Techniques and Instrumentation, Vol 5, Iss 1, Pp 1-17 (2018)
Abstract A novel probe for the measurement of forces exerted by a beam of ions and neutral atoms on a small target is described. The force probe is intended for various applications: First, diagnostics of thruster plumes of electric spacecraft propul
Externí odkaz:
https://doaj.org/article/deb62b87af89487a99e33138a7b59141
Publikováno v:
EPJ Techniques and Instrumentation, Vol 5, Iss 1, Pp 1-17 (2018)
A novel probe for the measurement of forces exerted by a beam of ions and neutral atoms on a small target is described. The force probe is intended for various applications: First, diagnostics of thruster plumes of electric spacecraft propulsion engi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ba258dc4c1d60503608c7ce08172e99
https://doi.org/10.1140/epjti/s40485-018-0044-2
https://doi.org/10.1140/epjti/s40485-018-0044-2
Autor:
Ruben Wiese, Fabian Haase, Alexander Spethmann, Holger Kersten, Thomas Trottenberg, Sven Gauter
Publikováno v:
2017 IEEE International Conference on Plasma Science (ICOPS).
For an optimization of plasma-based processes as thin film deposition suitable diagnostics are required. In addition to well-established plasma diagnostic methods (e.g. emission spectroscopy, mass spectrometry, Langmuir probes, etc.) we perform examp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8a227bd361cb2741325f377b9b2be1b
https://doi.org/10.1109/plasma.2017.8496344
https://doi.org/10.1109/plasma.2017.8496344
Publikováno v:
The European Physical Journal D. 70
Forces on a small plane measurement target caused by sputtered atomic particles originated at plane sputter targets by a beam of argon particles are investigated. The rotatable sputter targets are centrally mounted in front of the ion source and allo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0f1861b3bef56bd9c1e08d4c035513d
https://doi.org/10.1140/epjd/e2016-70355-6
https://doi.org/10.1140/epjd/e2016-70355-6
Publikováno v:
2016 IEEE International Conference on Plasma Science (ICOPS).
The forces that low-temperature plasmas exert on limiting walls and electrodes have not received much attention so far. The reason might be the smallness of such forces and the expected difficulties in their measurement. Therefore, only in cases of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::198f0db623deec0f95bfee9b6945c8b6
https://doi.org/10.1109/plasma.2016.7533974
https://doi.org/10.1109/plasma.2016.7533974
Autor:
Viktor Schneider, Holger Kersten, Alexander Spethmann, Th. Trottenberg, Marc Stahl, M. Giesenhagen
Publikováno v:
Contributions to Plasma Physics. 52:584-592
The article reports on non-electrostatic diagnostics for ion beams. A novel galvanometric force measuring probe is presented, and results are compared with corresponding measurements by a calorimetric technique and using falling microparticles. The t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf26cecdf416cc5fdaad5389ffb81992
https://doi.org/10.1002/ctpp.201210054
https://doi.org/10.1002/ctpp.201210054
Publikováno v:
Physics of Plasmas. 24:093501
Forces on small plane sputter targets that are exposed to an ion beam at different angles of incidence are investigated. The force exerted on the sputter target is determined in two dimensions by means of an interferometric technique that measures th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e1a38cfcdfd1a3ebd7ac66d087b76b4
https://doi.org/10.1063/1.4997444
https://doi.org/10.1063/1.4997444
Instrument for spatially resolved simultaneous measurements of forces and currents in particle beams
Publikováno v:
Review of Scientific Instruments. 86:015107
The article presents a device for spatially resolved and simultaneous measurements of forces and currents in particle beams, especially in beams composed of ions and neutral atoms. The forces are exerted by the impinging beam particles on a plane cir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15e4ac7a5a8b7d172be785ed7eacef07
https://doi.org/10.1063/1.4905534
https://doi.org/10.1063/1.4905534