Work

Research on the mechanism of initial explosion electromagnetic radiation under different vacuum degrees

Year: 2025

Type: article

Abstract: Explosion electromagnetic radiation (EEMR), as an accompanying phenomenon during the explosion processes, has attracted widespread academic attention. However, a specific theoretical model characterizing its generation mechanisms remains unestablished. Addressing this gap, this study developed a theoretical model for atmospheric environments through integrated theoretical and experimental approaches, innovatively constructing research encompassing three core elements: (1) A customized EEMR testing platform with controllable vacuum conditions; (2) An advanced signal processing algorithm integrating signal denoising with electric field strength reconstruction; (3) A theoretical model linking EEMR with detonation transmission. The results indicate: The initial EEMR originates from the process in which the detonation wave transmits into the air. calculated electric field strength decreased from 0.72 V/m to 0.45 V/m as vacuum degrees increased from 0 to 90% (maximum prediction deviation: 4.3%). The established model quantitatively correlates EEMR with key shockwave parameters (temperature, pressure, density, thickness, velocity etc.), revealing significant correlations between measurement results and calculation results (R2 > 0.99). This work presents the first physics-based explanation model for EEMR analysis, providing crucial theoretical support for explosion diagnostics and energetic material characterization.

Source: Scientific Reports

DOI: 10.1038/s41598-025-19023-5