学术数据库优秀期刊 《中文科技期刊数据库》来源期刊

To enhance the reliability of exploding foil initiation systems(EFIs), this paper conducts an experimental study on the operational reliability of cold cathode trigger tubes—a core high-voltage switching component. The influence of trigger energy on key parameters, including the minimum reliable operating voltage, cut-off voltage, turn-on time, and on-state impedance, was experimentally examined. The results indicate that as trigger energy increases, both the minimum reliable operating voltage and cut-off voltage decrease significantly, while their difference remains stable. Higher trigger voltage or operating voltage values lead to shorter turn-on times. The equivalent resistance decreases with increasing trigger energy but increases with decreasing operating voltage, whereas the equivalent inductance remains nearly constant. The study identifies that a trigger storage capacitance in the range of 20~30 μF ensures reliable operation of the trigger tube below 1.3 kV while maintaining a cut-off voltage above 0.8 kV , thus providing good anti-interference capability. Additionally, optimal matching of circuit impedance parameters and superior electrical explosion performance are achieved when the trigger storage capacitance is 30 μF and the operating voltage is 2.0 kV. This research provides critical experimental guidance for selecting and optimizing the operational parameters of cold cathode trigger tubes in EFI systems, thereby contributing to improved engineering reliability of in-line initiation systems.