References

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     • Poeltinger, A.: `Experimental study of a high-perveance, hollow electron beam', September 1962, M.Sc. dissertation, Massachusetts Institute of Technology.
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     • Mandics, P., Bers, A.: `High perveance hollow electron beam study', Report 71, Massachusetts Institute of Technology Quarterly Progress Report, 1963, p. 45–50.
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     • A.L. Samuel . On the theory of axially symmetric electron beams in an axial magnetic field. Proc. Inst. Radio Eng. , 1252 - 1258
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     • Anderson, L.B., Bers, A.: `A broadband megawatt hollow beam multicavity klystron', Proceedings of the 4th International congress on microwave tubes, 1962, Scheveningen , p. 60–62.
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     • Natrass, H.L.: `An experimental study of beams formed by magnetron guns', 1962, Ph.D. dissertation, Cambridge University, p. 154–160.
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     • A.H.W. Beck , P. Deering . Space charge waves on annular beams in drift tubes. Proc. IEE. , 635 - 641
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     • Pease, R.L.: `Calculation of the potential depression in klystron gaps', 316, Technical Report, 1963.
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     • Bers, A., Pawula, R.: `Dense space charge theory of gap interaction', Report 62, Massachusetts Institute of Technology Quarterly Progress Report, 1961, p. 117–120.
  9. 9)
     • Falkner, A.H.: `Radio frequency wave phenomena on annular electron beams', 1966, Ph.D. dissertation, Cambridge University.
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      • Bers, A.: `Kinematic theory of gap interaction for relativistic electron beams', Report 66, Massachusetts Institute of Technology Quarterly Progress Report, 1962, p. 29–32.
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      • Rook, C.W.: `Approximate techniques for evaluation of electronic loading in a klystron gap in the presence of a potential depression', Report 65, Massachusetts Institute of Technology Quarterly Progress Report, 1962, p. 45–49.
  14. 14)
      • Mandics, P., Bers, A.: `High perveance hollow electron beam study', Report 70, Massachusetts Institute of Technology Quarterly Progress Report, 1963, p. 43–57.