000 00638 a2200241 4500
001 281178
020 _a
041 _aeng
080 _aLNASA TP 2664 : 1986
245 _aCalculation of secondary electron trajectories in multistage depressed collectors for microwave amplifiers
250 _a
260 _aWashington, D.C.
260 _bNational Aeronautics and Space Administration
260 _c1986
300 _a6 p.
300 _c
856 _u
490 _aNASA TP 2664 : 1986
700 _a
650 _a
650 _aSecondary electron emission, Multistage depressed collectors, Traveling-wave tubes
942 _cPP
942 _2UDC
999 _c240636
_d240636