Electron back-bombardment and mitigation in a short gap, thermionic cathode RF gun.

J.P. Edelen, S.G. Biedron, J.R. Harris, J.W. Lewellen, and S.V. Milton, 2014. Electron back-bombardment and mitigation in a short gap, thermionic cathode RF gun. IEEE Transactions on Nuclear Science, 61(2), pp.830-836.