IEC Grid Materials and Construction

  • George H. Miley
  • S. Krupakar Murali


Grid design and construction are a vital part of the IEC. In this chapter we concentrate on grids for spherical IEC systems. Similar considerations carry over to other geometries, e.g., cylindrical IECs. There are several factors that must be taken into consideration in doing this. First, the wire used for the construction of the cathode has to be a suitable material to supply the strength needed, have a high melting temperature, and control electron emission. Second, from the earlier discussion we know that the effective transparency is more important than the physical transparency of a cathode. Thus, ideally the cathode grid should be constructed in such a way that the openings in the cathode radially face each other with good symmetry and with openings of sufficient size to support formation of ion microchannels. Third, the overall size and shape of the cathode grid plays a significant role in the performance of the device and should be taken into consideration while designing a grid. This chapter concentrates on selection of grid materials and construction.


Electron Emission Spot Welding Grid Wire Power Supply Current Grid Construction 
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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • George H. Miley
    • 1
  • S. Krupakar Murali
    • 2
  1. 1.Fusion Studies LabUniversity of IllinoisUrbanaUSA
  2. 2.Department of Electronics and Communication EngineeringJ. K. K. M. College of TechnologyErode DistrictIndia

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