Detail publikace

Cold field-emission cathode noise analysis

KNÁPEK, A. GRMELA, L. ŠIKULA, J. ŠIK, O.

Originální název

Cold field-emission cathode noise analysis

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Noise diagnostics has been performed on the cold field-emission cathode in high-vacuum. The tested cold fieldemission cathode, based on tungsten wire with ultra-sharp tip coated by epoxy was designed to meet the requirements of transmission electron microscopy, which uses a small and stable source of electrons. Current fluctuations are reduced by improving the structure and fabrication technology. Noise was measured both in time and frequency domains, which gives information about current fluctuations and also about charge transport. Mutual correlation between the noise spectral density, extractor voltage and beam brightness was analyzed.

Klíčová slova

Keywords: cold field-emission cathode, noise diagnostics, epoxy coating.

Autoři

KNÁPEK, A.; GRMELA, L.; ŠIKULA, J.; ŠIK, O.

Rok RIV

2012

Vydáno

11. 5. 2012

Nakladatel

Versita

Místo

Warsaw, Poland

ISSN

0860-8229

Periodikum

METROL MEAS SYST

Ročník

2012

Číslo

2

Stát

Polská republika

Strany od

417

Strany do

422

Strany počet

6

URL

http://www.metrology.pg.gda.pl/full/2012/M&MS_2012_417.pdf

BibTex

@article{BUT92070,
  author="Alexandr {Knápek} and Lubomír {Grmela} and Josef {Šikula} and Ondřej {Šik}",
  title="Cold field-emission cathode noise analysis",
  journal="METROL MEAS SYST",
  year="2012",
  volume="2012",
  number="2",
  pages="417--422",
  issn="0860-8229",
  url="http://www.metrology.pg.gda.pl/full/2012/M&MS_2012_417.pdf"
}