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Statements

Subject Item
n2:RIV%2F00216305%3A26220%2F12%3APU98285%21RIV13-GA0-26220___
rdf:type
n3:Vysledek skos:Concept
dcterms:description
Paper deals with noise diagnostics which was performed on the cold field emission cathode in high-vacuum conditions (HV). Used cold field-emission cathode is designed to be used in low-voltage TEM, and is based on tungsten cathode with ultra-sharp nano-tip. The cathode is additionally coated by epoxy resin to stabilize the emission current, providing small and stable source of electrons. Technological issues are further examined by the means of the noise diagnostics, which provides information about carrier transport and cathode performance in general. The analysis was performed both in time and frequency domain. Mutual correlation between the current noise spectral-density, extractor voltage, beam brightness and Allan dispersion were analyzed, together with the main sources of noise. Paper deals with noise diagnostics which was performed on the cold field emission cathode in high-vacuum conditions (HV). Used cold field-emission cathode is designed to be used in low-voltage TEM, and is based on tungsten cathode with ultra-sharp nano-tip. The cathode is additionally coated by epoxy resin to stabilize the emission current, providing small and stable source of electrons. Technological issues are further examined by the means of the noise diagnostics, which provides information about carrier transport and cathode performance in general. The analysis was performed both in time and frequency domain. Mutual correlation between the current noise spectral-density, extractor voltage, beam brightness and Allan dispersion were analyzed, together with the main sources of noise.
dcterms:title
Emission Current Fluctuations vs. Beam Lightning of the Field-Emission Cathode Emission Current Fluctuations vs. Beam Lightning of the Field-Emission Cathode
skos:prefLabel
Emission Current Fluctuations vs. Beam Lightning of the Field-Emission Cathode Emission Current Fluctuations vs. Beam Lightning of the Field-Emission Cathode
skos:notation
RIV/00216305:26220/12:PU98285!RIV13-GA0-26220___
n3:predkladatel
n4:orjk%3A26220
n7:aktivita
n10:P
n7:aktivity
P(GAP102/11/0995), P(GD102/09/H074)
n7:dodaniDat
n22:2013
n7:domaciTvurceVysledku
n19:4427378
n7:druhVysledku
n15:D
n7:duvernostUdaju
n21:S
n7:entitaPredkladatele
n18:predkladatel
n7:idSjednocenehoVysledku
134193
n7:idVysledku
RIV/00216305:26220/12:PU98285
n7:jazykVysledku
n14:eng
n7:klicovaSlova
field emission stability, tungsten cathodes, Allan dispersion
n7:klicoveSlovo
n8:field%20emission%20stability n8:Allan%20dispersion n8:tungsten%20cathodes
n7:kontrolniKodProRIV
[5A5D145CDF11]
n7:mistoKonaniAkce
Brno
n7:mistoVydani
Brno
n7:nazevZdroje
Student EEICT - Proceedings of the 18th Conference vol.3
n7:obor
n20:BM
n7:pocetDomacichTvurcuVysledku
1
n7:pocetTvurcuVysledku
1
n7:projekt
n17:GAP102%2F11%2F0995 n17:GD102%2F09%2FH074
n7:rokUplatneniVysledku
n22:2012
n7:tvurceVysledku
Knápek, Alexandr
n7:typAkce
n11:CST
n7:zahajeniAkce
2012-04-26+02:00
s:numberOfPages
5
n13:hasPublisher
Litera Brno
n16:isbn
978-80-214-4462-1
n12:organizacniJednotka
26220