Publication result detail

Cold field-emission cathode noise analysis

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

Original Title

Cold field-emission cathode noise analysis

English Title

Cold field-emission cathode noise analysis

Type

Peer-reviewed article not indexed in WoS or Scopus

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.

English 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.

Key words in English

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

Authors

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

RIV year

2013

Released

11.05.2012

Publisher

Versita

Location

Warsaw, Poland

ISBN

0860-8229

Periodical

Metrology and Measurement Systems

Volume

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="Metrology and Measurement Systems",
  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"
}