Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Rostislav Spektor"'
Autor:
Rostislav Spektor
Publikováno v:
Journal of Propulsion and Power. 37:391-399
Two analytical models for computing the pumping speed of a vacuum chamber are derived. The models focus on the vacuum systems used for testing electric propulsion devices. The node model is based o...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2a853a3f8ca4bbbf388846f065064d3
https://doi.org/10.2514/1.b37998
https://doi.org/10.2514/1.b37998
Autor:
T. P. Graves, Vernon H. Chaplin, Aimee A. Hubble, Preston T. Partridge, Rostislav Spektor, Kathryn A. Clements
Publikováno v:
IEEE Transactions on Plasma Science. 45:1726-1730
In certain high-power RF devices, such as isolators and circulators, a static magnetic field is present in parallel with the oscillating RF electric field. This parallel magnetic field imposes electron Larmor motion, which restricts the trajectories
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8ea14526fae2a85f726d57ade5d92e6
https://doi.org/10.1109/tps.2017.2704923
https://doi.org/10.1109/tps.2017.2704923
Autor:
Aimee A. Hubble, Dylan Dickstein, Nasr M. Ghoniem, Rostislav Spektor, Matthew S. Feldman, Jaime Marian, Hsing-Yin Chang
Publikováno v:
Journal of Applied Physics. 128:123302
An experimental and computational study of the secondary electron yield (SEY) of copper foam is presented. Ray-tracing Monte Carlo (MC) simulations, based on primary electron transport and interactions with the electron system in solid and foam-type
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7ad1d1b80150e6def6c6b76f9ca571d
https://doi.org/10.1063/5.0015528
https://doi.org/10.1063/5.0015528
Publikováno v:
2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO).
Multipactor breakdown is highly dependent on the precise secondary electron properties of the electrode materials and these properties are often subject to some uncertainty. The sensitivity of the multipactor breakdown threshold to various coefficien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5026605be6060f82548e9ce9d7ead25
https://doi.org/10.1109/nemo.2018.8503416
https://doi.org/10.1109/nemo.2018.8503416
Publikováno v:
2018 IEEE International Conference on Plasma Science (ICOPS).
Contrary to single particle analysis of multipactor discharges, experimental results show that application of a magnetic field parallel to the RF electric field can result in a significant reduction of the breakdown threshold voltage1. One explanatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::994ccb0ae3e0a155d2ab9d221376c847
https://doi.org/10.1109/icops35962.2018.9575497
https://doi.org/10.1109/icops35962.2018.9575497
Publikováno v:
2018 IEEE International Conference on Plasma Science (ICOPS).
Many high power RF communication and navigation systems utilize multicarrier systems. Testing such systems for multipactor breakdown has no universal approach, and current practices range in their degree of conservatism. A common approach involves co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd5c818205f5ff7043ba089cd0552be4
https://doi.org/10.1109/icops35962.2018.9575509
https://doi.org/10.1109/icops35962.2018.9575509
Publikováno v:
Physics of Plasmas. 26:053502
Many high-power radio frequency communication and navigation systems utilize multicarrier systems. Testing and analyzing such systems for multipactor breakdown have no universal approach, and current practices range in their degree of conservatism. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d46d036fbe9f6425648609678416e441
https://doi.org/10.1063/1.5087069
https://doi.org/10.1063/1.5087069
Publikováno v:
52nd AIAA/SAE/ASEE Joint Propulsion Conference.
A set of Laser Induced Fluorescence (LIF) measurements in the near-field region of the NASA- 173M Hall thruster plume is presented at four background pressure conditions varying from 9.4 x 10(exp -6) torr to 3.3 x 10(exp -5) torr. The xenon ion veloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::997b751043ca2db91a310c400ebab45c
https://doi.org/10.2514/6.2016-4624
https://doi.org/10.2514/6.2016-4624
Publikováno v:
52nd AIAA/SAE/ASEE Joint Propulsion Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ee9b702075ba430acdcd1b86f7e129b
https://doi.org/10.2514/6.2016-4533
https://doi.org/10.2514/6.2016-4533
Autor:
Aimee A. Hubble, Vernon H. Chaplin, Preston T. Partridge, Rostislav Spektor, T. Bhattacharjee, T. P. Graves
Publikováno v:
2016 IEEE International Conference on Plasma Science (ICOPS).
Multipactor breakdown may occur in an RF component when the electron transit time across a gap satisfies a resonant condition and the secondary electron yield from surfaces is sufficiently high to overcome electron losses from the breakdown region an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44ef6b4e968c1125e2b7ef02a9a072d4
https://doi.org/10.1109/plasma.2016.7534161
https://doi.org/10.1109/plasma.2016.7534161