Space-charge effects (so-called negative-mass instability) as the reason for electron energy spread arising in the region of the electron drift between the cathode and the cavity of a gyrotron are discussed. Theoretical calculations are compared with results of measurements performed at Forschungszentrum Karlsruhe.
Ivo Furno, Patrick Blanchard, Alan Howling, Yanis Andrebe, Rémy Jacquier, Riccardo Agnello, Alban Sublet
Fabrizio Carbone, Giovanni Maria Vanacore, Ivan Madan, Ido Kaminer, Simone Gargiulo, Francesco Barantani, Kangpeng Wang