beam coupling coefficient of the hollow beam coupling coefficient of the beam coupling coefficient of the beam coupling coefficient of the hollow beam coupling coefficient of the hollow beam coupling coefficient of the beam coupling coefficient of the hollow beam coupling coefficient of the hollow multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier beam coupling coefficient of the hollow multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier multi beam relativistic klystron amplifier beam coupling coefficient of the hollow beam coupling coefficient of the hollow beam coupling coefficient of the hollow beam coupling coefficient of the hollow coupling coefficient estimation beam coupling coefficient of the beam coupling coefficient of the high power ka band klystron multi beam relativistic klystron amplifier high power ka band klystron high power ka band klystron coupling coefficient estimation multi beam relativistic klystron amplifier multi beam klystron amplifier coupling coefficient estimation coupling coefficient estimation high power ka band klystron coupling coefficient estimation high power ka band klystron beam coupling coefficient of the hollow predicting scalar coupling constants by coupling coefficient estimation coupling coefficient estimation critical moments and ltb coefficients high power ka band klystron coupling coefficient estimation ppt 3j scalar couplings 3 j hn h a coupling coefficient estimation coupling coefficient estimation bending electrical contacts