Development of pulse forming system for pulsed ESR system

摘要

We have developed a millimeter wave pulsed electron spin resonance (ESR) spectrometerby using a high power radiation source gyrotron. As the first, we introduce a high power millimeter wave pulse forming system by using light controlled semiconductor shutters. Nanoseconds millimeter wave pulses (15 ns and 27 ns) were realized with the microseconds order arbitrary delay time. We will also report the development of gyrotron FU CW VII-A which are newly built for this pulsed EMR system.