The Improvement And Aplication Of TomaChan

TomaChan is an inductive energy storage pulsed power device. This paper presents the improvements on the trigger switch, the constant-current charging system, and the diode cathode of TomaChan. The improvements are as follows.To begin with, the surface flashover discharging switch is used as the trigger switch on the Tomachan experimental device. The flashover discharging takes place in the air. As a result, the switch is not only sensitive to the external environment, but also is nonsteady with a lot of noise. Therefore, a field distortion switch is designed to replace the surface flashover discharging switch in TomaChan. The experimental results show that the novel switch not only has the similar parameters but also runs stably with very good performances.Moreover, the original charging systems need two sets of charging device to charge the storage capacitor and the trigger capacitor separately. The circuit is complex, and the voise of the transformer is large. At the same time, the trigger system has the same problem that the discharging switch is surface flashover discharge which is also sensitive to the external environment. The signal generating source is simplified after the theoretical analyse of the system, and the cumbersome transformer is replaced too.In addition, the carbon fiber cathode substituted for the stainless steel cathode on the Tomachan experimental device. The experimental results show: the flattop phenomenon on the diode voltage pulse was very apparent for using the carbon fiber cathode, that is to say, the pulse duration of the diode voltage was widened; moreover, under the condition of the same power of microwave, the pulse duration of the out-put microwave was prolonged by about 30%; the peak power of the microwave was enhanced by 3dB.We find the powder sizes are especially small during our experiment. Through studying the EEOS principle, we consider the powder is nanometer material. So, we collect the powder after the experiment. The microstructure and thickness of the powder are scanned through the scanning Electron Microscope. The experimental results show that most of the powder sizes are less than 100nm. On the other hand, we design the vacuum equipment to research the coating technology using explosive wires. Brass wires are winded between two metallic electrodes located in a vacuum chamber, where 2μm thickness films are deposited onto the substrate glass after explosive wires discharging.