Reflex klystron is used in which of the following frequency ranges?
(a) 1000 to 2000 MHz
(b) 1000 to 10000 MHz
(c) 1000 to 15000 MHz
(d) 1000 to 20000 MHz
I have been asked this question in quiz.
Question is from Electron Spin Resonance topic in chapter Electron Spin Resonance Spectrometers of Analytical Instrumentation