31. The best known result of this research was the klystron tube invented 1937 by Russell and Sigurd Varian. 32. In the klystron , a beam of electrons was passed through a metal disk known as a resonator. 33. After trying a variety of designs based on klystrons and older-style magnetrons, they eventually gave up. 34. The klystron became an important component in radar-detection and guidance systems and later in electron-acceleration technology. 35. Some modern klystrons include depressed collectors, which recover energy from the beam before collecting the electrons, increasing efficiency. 36. The only amplification devices suitable for pulse-Doppler are klystron , traveling wave tube, and solid state devices. 37. Klystron 9 has the ability to see storms other radars can't see and see deeper into those storms.38. High voltage DC on a cylindrical anode accelerates the modulated electron beam through a small drift tube like a klystron . 39. First, the klystron uses " velocity modulation " to create bunching; its beam current is constant. 40. Sources like the klystron and magnetron replaced the B-K tube around World War 2 and it became obsolete.
