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Features of modelling the multiple-tip cathodes with variable periodic structure

Keywords:

I.A. Navrotsky, A.A. Burtsev


One of the options for creation of electron-optical systems is multiple-tip field-emission cathode with a grid, in which the diameters of openings exceed the period of tips in tens of times. To make a field more uniform on the cathode, it is offered to change the enhancement factor of a field on the tip apexes by a change of the tip density on a cathode surface, i.e. a period between tips. Estimates show that at the irregular density of tips of array multiple-tip structure, the increase of the structure period from the edge of the cathode to its center allows to increase a field-emission current approximately up to 30 % in comparison with the case of a constant value of density N = const. Basing on the software «Lorentz» and taking into account a start points of charged particles on a cathode microstructure with a changing period, a three-dimensional computer modelling of an electronic gun based on multiple-tip cathodes with a compression of an electron flow is carried out.
References:

  1. Grigor`ev Ju.A., Shalaev P.D., Burczev A.A. i dr. Issledovanie vakuumny'x avtoe`missionny'x mikrodiodov s izmenyayushhimsya zazorom // Nano- i mikrosistemnaya texnika. 2008. №7 (96). S. 47–52.
  2. Brodie I., Spindt G.A. Vacuum Microelectronics // Advances in Electronics and Electronic Physics. 1992. V. 83. P. 1–106.
  3. Nenakalivaemy'e katody' / Pod red. M.I. Elinsona. M.: Sov. radio. 1974.
  4. Mirolyubov N.N., Kostenko M.V., Levinshtejn M.L., Tixodeev N.N. Metody' rascheta e`lektrostaticheskix polej. M.: Vy'sshaya shkola. 1963.

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