Zobrazeno 1 - 10
of 14
pro vyhledávání: '"T. P. Graves"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Understanding pollinator networks requires species level data on pollinators. New photographic approaches to identification provide avenues to data collection that reduce impacts on declining bumblebee species, but limited research has addre
Externí odkaz:
https://doaj.org/article/bf22e0635ba14f669adf5e65f45912f0
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
Publikováno v:
2016 IEEE International Conference on Plasma Science (ICOPS).
Multipactor breakdown is a resonant electron phenomena that is observed in spacecraft RF systems. While multipactor breakdown thresholds are well documented for parallel metal surfaces, susceptible breakdown geometries in passive RF components freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a75f5e502a5aac3dc1cd5e0d78a7452
https://doi.org/10.1109/plasma.2016.7534361
https://doi.org/10.1109/plasma.2016.7534361
Publikováno v:
2016 IEEE International Conference on Plasma Science (ICOPS).
Multipactor and ionization breakdown can cause critical damage to RF systems within spacecraft systems. In order to prevent these breakdown events and ensure proper satellite operation, fundamental physics and the RF system must both be well defined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7612d2c37d62009bc9eac493044ccb4a
https://doi.org/10.1109/plasma.2016.7534158
https://doi.org/10.1109/plasma.2016.7534158
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
Publikováno v:
Physics of Plasmas. 25:122109
Numerical and theoretical models were developed to investigate space-charge effects in a multipactor discharge with an applied magnetic field. The magnetic field was assumed to be parallel to the RF electric field, and only the space-charge effects i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d2c880881a2397e8d22fae2b6fff160
https://doi.org/10.1063/1.5052647
https://doi.org/10.1063/1.5052647
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 24:512-516
Alcator C-Mod uses high power radio frequency (rf) power for auxiliary plasma heating at the ion cyclotron frequency. The operation of the rf antennas is limited at neutral pressures which fall far below the minimum pressure for glow discharge as giv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfbc9c9a52cdb1398e9ee1af6a5b3a6b
https://doi.org/10.1116/1.2194937
https://doi.org/10.1116/1.2194937
Publikováno v:
Review of Scientific Instruments. 88:014706
Electron collecting current probes are the most reliable diagnostic of multipactor and radiofrequency (RF) ionization breakdown; however, stand-alone probes can only be used in test setups where the breakdown region is physically accessible. This pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efc1152ffaa639d9df462c22de1e70d7
https://doi.org/10.1063/1.4974346
https://doi.org/10.1063/1.4974346
Publikováno v:
The Review of scientific instruments. 85(2)
Radio frequency (RF) breakdown such as multipactor or ionization breakdown is a device-limiting phenomenon for on-orbit spacecraft used for communication, navigation, or other RF payloads. Ground testing is therefore part of the qualification process
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c25ad7f97db810cd6d421dfc509dd5cf
https://pubmed.ncbi.nlm.nih.gov/24593380
https://pubmed.ncbi.nlm.nih.gov/24593380
Autor:
Zach Bernstein, Brian Hardy, Veronica Eliasson, Kara Scheu, Dylan Campos, Andrea Hsu, T. P. Graves
Publikováno v:
41st AIAA Fluid Dynamics Conference and Exhibit.
Traumatic brain injury (TBI) is a significant biological concern that has been known to result from exposure of the brain to shock and blast events. Experiments have been carried out at The Aerospace Corporation’s shock tube facility aimed at study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09ebbd9a6e8305597a06d7a83a81214b
https://doi.org/10.2514/6.2011-3721
https://doi.org/10.2514/6.2011-3721