Low power microwave ignition technology of energetic materials based on dual-focusing of rectangular resonant cavity and microwave probe

Chen Yiheng; Wang Shaofei; Zhao Jia; Xie Yanzhao

doi:10.11884/HPLPB202537.250030

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Article Navigation > High Power Laser and Particle Beams > 2025 > Accepted Manuscript

Chen Yiheng, Wang Shaofei, Zhao Jia, et al. Low power microwave ignition technology of energetic materials based on dual-focusing of rectangular resonant cavity and microwave probe[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250030

Citation:

Chen Yiheng, Wang Shaofei, Zhao Jia, et al. Low power microwave ignition technology of energetic materials based on dual-focusing of rectangular resonant cavity and microwave probe[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250030

Citation:

Chen Yiheng, Wang Shaofei, Zhao Jia, et al. Low power microwave ignition technology of energetic materials based on dual-focusing of rectangular resonant cavity and microwave probe[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250030

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Low power microwave ignition technology of energetic materials based on dual-focusing of rectangular resonant cavity and microwave probe

doi: 10.11884/HPLPB202537.250030

1.
State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
2.
State Key Laboratory of Transient Chemical Effects and Control, Shaanxi Applied Physics and Chemistry Research Institute, Xi’an, 710061, China

Received Date: 2025-02-21
Accepted Date: 2025-04-26
Rev Recd Date: 2025-05-26

Available Online: 2025-06-21

Abstract

Abstract

In order to solve the problem of microwave ignition of solid energetic materials under low power conditions, this paper proposes a low-power high-field microwave ignition technology based on dual-focusing optimization design of rectangular resonant cavity. The developed microwave ignition device consists of a solid-state microwave source, a rectangular resonant cavity, a microwave probe and other parts. Among them, the rectangular resonant cavity is fed by a probe, and the energy is focused once by resonance. Combined with the distortion effect of the probe tip on the electric field and the compression effect of the metal stage on the electric field distribution space, the secondary focusing of the energy in the cavity during resonance is realized, and the electromagnetic compatibility design is used to prevent electromagnetic wave leakage. The simulation and experiment show that the microwave ignition device has multiple operating frequency points in the range of 2−3 GHz and the frequency is adjustable. The maximum field strength can reach MV/m level at 22 W power, and can realize the effective ignition of small black powder. Compared with the existing device, the ignition power is greatly reduced. The developed low-power and high-field microwave ignition technology can provide a platform for the study of microwave ignition of solid energetic materials.
- microwave ignition,
- dual-focusing,
- rectangular resonator,
- electromagnetic shielding,
- solid energetic material

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References(21)

References

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