Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Chr. Edelmann"'
Autor:
St. Wilfert, Chr. Edelmann
Publikováno v:
Vacuum. 86:556-571
The subject of this article is to review the current state of the art and the trends of the development of vacuum gauges using various types of cold-cathode electron sources (e.g. silicon field-emitter arrays, emitter arrays of the Spindt-type, carbo
Autor:
Chr. Edelmann, St. Wilfert
Publikováno v:
Vacuum. 82:412-419
If a cold-cathode ionization gauge is operated in a gas atmosphere with a high content of hydrocarbons at high pressures, the pressure reading of the gauge is disturbed by the contamination after a certain time of operation. Since in the most cases i
Autor:
Chr. Edelmann, St. Wilfert
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 22:309-320
Due to the rapid advancement in microsystem and micromachining technology in the past several years, the most important common pressure measuring principles have been successfully applied in miniaturized vacuum sensors. In addition to MicroPiranis®,
Publikováno v:
Vakuum in Forschung und Praxis. 13:123-128
Obwohl sich im Allgemeinen die Anforderungen, die an die Betriebsparameter und die Elektrodenkonfiguration von Gluhkatoden-Ionisationsmanometer fur hohe und tiefe Drucke gestellt werden, prinzipiell widersprechen, lassen sich dennoch Ionisationsmanom
Publikováno v:
Vacuum. 60:191-196
In the rough and partly in the medium-vacuum range elastic collisions between electrons and gas particles have a strong influence on the shape of electron trajectories. This electron scattering can be applied for pressure measurement using gauges wit
Publikováno v:
Vakuum in Forschung und Praxis. 12:199-204
Publikováno v:
Vacuum. 57:283-293
Commercial hot filament ionization gauges of Bayard–Alpert type can be used for the pressure measurement usually below the upper pressure limit of 10−2 mbar. There are some special gauge types for high-pressure measurement, but the requirements f
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 17:3486-3494
The present article gives a description of the vacuum chamber required for a high luminosity electron e+−e− collider Tau–Charm factory. The beam lifetime, which is limited by the single particle collisions with molecules of the residual gas, is
Publikováno v:
Surface and Coatings Technology. :963-968
The processes d.c. arc, modified pulsed arc, d.c. steered arc and the combination of steered and pulsed arc were compared. Steered arc cathodes with different magnetic fields were used to obtain experimental results for spot movement, ion current, la
Autor:
D Schleußner, H Maier, P Franzen, R Behrisch, M Balden, null The ASDEX-Upgrade Team, M Perl, W Knapp, Chr Edelmann
Publikováno v:
Journal of Nuclear Materials. :1296-1302
The total hydrogen isotope inventories in the tungsten coated divertor tiles of ASDEX-Upgrade were measured by thermal desorption spectroscopy (TDS) and - in the near surface region - by nuclear reaction analysis (NRA). The highest amounts of deuteri