TITLE

Cesiated thin-film field-emission microcathode arrays

AUTHOR(S)
Macaulay, J.M.; Brodie, I.
PUB. DATE
August 1992
SOURCE
Applied Physics Letters;8/24/1992, Vol. 61 Issue 8, p997
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Analyzes the effect of adsorbed cesium on the performance of thin-film field-emission microcathode arrays with molybdenum tips. Exhibition of stable performance of the arrays; Analysis of the current-voltage characteristics; Provision of values for the emitting area, work function, and geometrical factor.
ACCESSION #
4254983

 

Related Articles

  • Green emission from B[sub 2]N[sub 2]CO thin films doped with Tb. Liu, Q. L.; Zhang, F. X.; Tanaka, T.; Aizawa, T. // Applied Physics Letters;7/1/2002, Vol. 81 Issue 1, p34 

    Visible light emission has been obtained at room temperature by photoluminescence (PL) and cathodoluminescence (CL) from Tb-doped B[sub 2]N[sub 2]CO thin films prepared by radio-frequency magnetron sputtering. The films were deposited by sputtering TbB[sub n] (n = 4, 6, 12, 25, and 50) targets...

  • Multiple scattering effects on quantum efficiency and response time for cesiated metal photocathodes. Jensen, Kevin L.; Montgomery, Eric J.; Feldman, Donald W.; O'Shea, Patrick G.; Harris, John R.; Lewellen, John W.; Moody, Nathan // Journal of Applied Physics;Aug2011, Vol. 110 Issue 3, p034504 

    An oft used approximation to predict quantum efficiency (QE) from bare metals or those with a low work function coating such as cesium is to assume that photo-excited electrons have not scattered prior to their emission. Monte Carlo simulations are used to assess that approximation, and show...

  • Highly monochromatic electron point-source beams. Morin, Roger; Fink, Hans-Werner // Applied Physics Letters;10/31/1994, Vol. 65 Issue 18, p2362 

    Examines the Cesium atom evaporation onto ultrasharp Tungsten field emitter tips for electron point sources. Use of the tips in field emission mode to depict electric current increases associated with atomic absorption; Difference of emitted electron energy distribution between the Cesium and...

  • Limitation of the current from nanographite multiemitter field-emission cathodes. Lyashenko, S.; Volkov, A.; Obraztsov, A. // Technical Physics;Feb2012, Vol. 57 Issue 2, p251 

    The limiting field-emission current of a nanographite film cathode is studied experimentally. The maximal field-emission current density reaches 1 A/cm. Experimental data agree with numerical estimates based on the general theory of field emission with regard to features inherent in...

  • A thin film triode type carbon nanotube field emission cathode. Sanborn, Graham; Turano, Stephan; Collins, Peter; Ready, W. // Applied Physics A: Materials Science & Processing;Jan2013, Vol. 110 Issue 1, p99 

    The field electron emission of carbon nanotubes has been heavily studied over the past two decades for various applications, such as in display technologies, microwave amplifiers, and spacecraft propulsion. However, a commercializable lightweight and internally gated electron source has yet to...

  • Characterization of field-emission cathodes based on graphene films on SiC. Konakova, R.; Okhrimenko, O.; Svetlichnyi, A.; Ageev, O.; Volkov, E.; Kolomiytsev, A.; Jityaev, I.; Spiridonov, O. // Semiconductors;Sep2015, Vol. 49 Issue 9, p1242 

    The properties of a point field-emission cathode representing a structure in the form of a silicon carbide tip coated with a thin graphene film are assessed. For the point cathode with the graphene coating, the current-voltage characteristics are constructed in the Fowler-Nordheim coordinates;...

  • Surface chemical analysis and ab initio investigations of CsI coated C fiber cathodes for high power microwave sources. Vlahos, Vasilios; Morgan, Dane; LaCour, Matthew; Golby, Ken; Shiffler, Don; Booske, John H. // Journal of Applied Physics;Feb2010, Vol. 107 Issue 4, p044903 

    CsI coated C fiber cathodes are promising electron emitters utilized in field emission applications. Ab initio calculations, in conjunction with experimental investigations on CsI-spray coated C fiber cathodes, were performed in order to better understand the origin of the low turn-on E-field...

  • Low level plasma formation in a carbon velvet cesium iodide coated cathode. Shiffler, D.; Heggemeier, J.; LaCour, M.; Golby, K.; Ruebush, M. // Physics of Plasmas;Apr2004, Vol. 11 Issue 4, p1680 

    Field emission cathodes have been a subject of research for many years. These cathodes hold the promise of effective electron emission in the absence of a heater. Such devices find application in the high power microwave (HPM) arena, as well as the conventional microwave industry and other areas...

  • Operation of an ungated diamond field-emission array cathode in a L-band radiofrequency electron source. Piot, P.; Brau, C. A.; Choi, B. K.; Blomberg, B.; Gabella, W. E.; Ivanov, B.; Jarvis, J.; Mendenhall, M. H.; Mihalcea, D.; Panuganti, H.; Prieto, P.; Reid, J. // Applied Physics Letters;6/30/2014, Vol. 104 Issue 26, p1 

    We report on the operation of a field-emitter-array cathode in a conventional L-band radio-frequency electron source. The cathode consisted of an array of ~106 diamond tips on pyramids. Maximum current on the order of 15mA was reached and the cathode did not show appreciable signs of fatigue...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics