Hollow cathode plasma contactors
NettetA hollow cathode-based plasma contactor has been baselined for use on Space Station to reduce station charging. _ The hollow cathode utilized by the plasma contactor … Nettetincluded a Hollow Cathode Plasma Contactor (HCPC) sub-system, but the ProSEDS experiment was canceled [10], and the HCPC was not flown. The HCPC utilized a hollow cathode component that required on-orbit conditioning in order to prepare it for operation (similar to many of the orbital experimental studies mentioned earlier).
Hollow cathode plasma contactors
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Nettet9. des. 2024 · Recently, ozonation has been advocated as a solution to tackle emerging contaminants. Hollow fiber membrane contactors (HFMC) have a lower residual ozone concentration than bubble reactors that could limit the formation of potential ozonation by-products, especially bromates that are regulated in drinking water. The aim of this study … NettetThe Hollow Cathode Plasma Contactor (HCPC) system has been developed as an effective tool for providing plasma electron emission currents for electrodynamic tether …
NettetSpace Station plasma contactors [2] use hollow cathodes to emit electron current, as demanded, to the ambient space plasma at low coupling voltages, thus compensating for spacecraft charging. For all of these applications, long cathode lifetime is critically important. The entitlement, or theoretical maximum, lifetime of NettetHollow cathodes as electron emitting plasma contactors Theory and computer modeling Several researchers have suggested using hollow cathodes as plasma contactors for …
Nettet13. jul. 2024 · Ion Emission From a Positively Biased Hollow Cathode Plasma Abstract: Hollow cathode plasma contactors have an extensive history as spacecraft … NettetⅡ. MODELING OF INSERT PLASMA Fig. 1 show a schematic of a BaO-W hollow cathode emitter region. In this model, we assume that the insert plasma obey the quasi-neutrality (nn n ec
Nettet17. jun. 2008 · Hollow cathodes are used for a wide variety of applications, including challenging ones like plasma contactors for sounding rocket experiments. Existing hollow Hollow cathode conditioning and discharge initiation studies IEEE Conference Publication IEEE Xplore Skip to Main Content Hollow cathode conditioning and …
Nettet1. jul. 2016 · [18] Williams John D and Wilbur Paul J 1989 Ground-based tests of hollow cathode plasma contactors AIAA 89-40188. Google Scholar [19] Wilbur Paul J and Williams John D 1987 An experimental investigation of the plasma contacting process AIAA-87-0571. Google Scholar hu hiking adidas jacketNettet6. des. 2024 · Deuterium background correction was used; the radiation source consisted of hollow cathode single-element lamps with a current of 4.0 mA. An air/acetylene mixture was used for the determinations. The determinations were performed in the flame mode at the following wavelengths: 357.9 nm for chromium, 232.0 nm for nickel, 324.8 nm for … hu hui supermarketNettet1. okt. 1986 · Hollow cathodes and hollow cathode-based plasma sources have been identified as leading candidates for the electrodynamic tether plasma contactor. Present experimental efforts to... hu hu hu allah ninnisiNettetCSU is currently focusing on the modeling, simulation, and testing of a Hollow Cathode Plasma Contactor (HCPC) system for EDTs. The plasma contactor (PC) is important to the operation of an EDT because it is used to close the electrical circuit between the EDT and the ionospheric plasma. The details of a PC are discussed in Section 1.5.5. hu huihui saradasNettetHollow Cathode Plasma Contactor Research Hollow Cathode Plasma Contactor Research at the Plasma Engineering Research Lab Theory suggests that electrical … hu hotel memphis parkingNettet8. aug. 2024 · Extracted Current, Bias Voltage, and Ion Production Rates of Cathodic Hollow Cathode-driven Plasma Contactors Journal of … hu hua san giuliano milaneseNettet12. aug. 2014 · The formation of electron emission-bias voltage (I-V) characteristics of near-zero differential resistance in the cathodic plasma contactor for bare … hu hungary flag