21. Nikolay Devyatkov is inventor of a reflex klystron ( 1939, with E . Daniltcev ). 22. No two klystrons are exactly identical ( even when comparing like part / model number klystrons ). 23. No two klystrons are exactly identical ( even when comparing like part / model number klystrons ). 24. Helical waveguides have very nonlinear dispersion and thus are only narrowband ( but wider than klystron ). 25. The klystron , tube waveguide, is a beam tube including at least two apertured cavity resonators. 26. Quick calculations showed this meant the tube was creating about 500 W, already beating the klystrons . 27. Apart from the resonant cavity, the Extended Interaction Oscillator is very similar to more conventional klystrons . 28. Oliphant's group at Birmingham worked on developing two promising devices, the klystron and the magnetron. 29. Using a klystron , they were able to separate isotopes using high-voltage electricity rather than magnetism. 30. So is it a klystron , or is it simply some sort of addition to the RF cavity.
