Publication detail

Cold field-emission cathode noise analysis

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

Original Title

Cold field-emission cathode noise analysis

Type

journal article - other

Language

English

Original Abstract

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.

Keywords

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

Authors

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

RIV year

2012

Released

11. 5. 2012

Publisher

Versita

Location

Warsaw, Poland

ISBN

0860-8229

Periodical

METROL MEAS SYST

Year of study

2012

Number

2

State

Republic of Poland

Pages from

417

Pages to

422

Pages count

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"
}