Physical mechanism of electromagnetic field generation with explosion of condensed exlosive charges. Results of experimental studies

Boronin, A. P.; Kapinos, V. N.; Krenev, S. A.

doi:10.1007/bf00843138

Cited by 10 publications

(9 citation statements)

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“…[2] Experiments designed to observe electromagnetic signals from explosions show that a low-frequency electromagnetic field is created by an explosion [Adushkin and Soloviev, 1996;Adushkin et al, 1990;Boronin et al, 1990aBoronin et al, , 1990bBoronin et al, , 1973Brovkin et al, 1990;Cook, 1959;Gorshunov et al, 1967;Gertcenshtein and Sirotinin, 1970;Kolsky, 1954;Martner and Sparks, 1959;Sweeney, 1989]. All data to date have been recorded at distances considerably less than the characteristic wavelength of the electromagnetic wave; that is, these data meet the near field requirement.…”

Section: Introductionmentioning

confidence: 91%

“…The recording of electric field was carried out, at most, only at two separate distances from the explosive charge. On the basis of the ratio of the magnitudes of the signals measured at only two different points, Boronin et al [1990b] made a conclusion about distance dependence of the electric field. These previous studies suggest that the amplitude of the recorded electric signal decreases as ∼ r −3 .…”

Section: Introductionmentioning

confidence: 99%

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Quadrupolar electromagnetic field from detonation of high explosive charges on the ground surface

Soloviev

Сурков²,

Sweeney

2002

J.‐Geophys.‐Res.

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[1] Experimental results of a study of electromagnetic fields due to detonation of high explosive charges with mass of a few kilograms are presented in this paper. Data show that in the initial stage of explosion the fields decrease as the fourth power of distance. Such a quadrupolar type of field contradicts the concept that an explosion is characterized by an effective electric dipole. A theoretical analysis is given based on expansion of an electromagnetic field in multipole moments. The theory is used to make estimates of the quadrupolar and dipole moments of the electric charge system resulting from an explosion occurring at the Earth's surface; calculations of electric fields thus produced are similar to those observed.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Quadrupolar electromagnetic field from detonation of high explosive charges on the ground surface

Soloviev

Сурков²,

Sweeney

2002

J.‐Geophys.‐Res.

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“…In the theory of electromagnetic radiation of explosives, Boronin [4][5][6][7] conducted theoretical studies of electromagnetic radiation from explosives from the perspective of charge separation and motion. They obtained a general relationship describing the electric field generated by the explosion of solid explosives and described the mechanism of electromagnetic radiation generated by the movement of explosive products.…”

Section: Introductionmentioning

confidence: 99%

Study on Electromagnetic Radiation Generated During Detonation

Ren

Chu

2019

Propellants Explo Pyrotec

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Electromagnetic radiation generated by an explosion significantly interferes with devices used in explosion tests. To study this electromagnetic radiation generated during the explosion of explosives, experiments using different masses of composition B explosives were performed, where coils were used to measure electromagnetic pulses generated by the explosion. The acquired signals were de-noised by a wavelet analysis to extract the real signals. Three typical pulses were identified at different times after detonation, which were locally amplified and investigated in detail to differentiate their origins. Based on this analysis, a numerical simulation of the entire explosion process was performed. The EXPLOSION-3D hydrocode was used to simulate the experimental cases, and the prop-agation of the air shock wave over time was modelled. Comparing the experimental and calculated results, we made the following observations. First, an electromagnetic pulse was directly generated by the high-temperature plasma produced by detonation of the composition B explosive; second, an electromagnetic pulse was generated by charged particles, which were in turn generated by the unbalanced and incompletely ionized plasma formed by the shock wave reflected from the ground meeting the front shock wave; and third, an pulse was caused by the shock wave impacting the measuring coils and was considered an experimental artefact and not a result of the explosion.

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“…New diagnostics that can provide insight into the detonation event are desirable. Work done by Hayes 1 and others [2][3][4][5][6][7][8] looked into the electromagnetic (EM) emissions of explosives and their applications. PETN is a common explosive in detonators and has been shown to be a piezoelectric 9 which provides another potential source of EM emissions for the powder.…”

Section: Introductionmentioning

confidence: 99%

Probing detonator performance through radio wave emissions

Wilde

Gibson

Nakamoto

et al. 2018

AIP Conference Proceedings

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Abstract. Experiments were performed using a copper antenna to observe transient electric fields generated by shocked Pentaerythritol Tetranitrate (PETN), which behaves as a piezoelectric explosive. PETN pellets were shocked using a detonator and polyvinyl chloride (PVC) as shock attenuation. The amount of attenuation was varied until an initiation threshold was found to increase the probability of a deflagration-to-detonation (DDT) transition occurring. These experiments showed distinct transient shifts in frequency over the duration of the experiments. Correlation was observed between certain shifts in frequency and if the PETN pellet detonated.

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Physical mechanism of electromagnetic field generation with explosion of condensed exlosive charges. Results of experimental studies

Cited by 10 publications

References 0 publications

Quadrupolar electromagnetic field from detonation of high explosive charges on the ground surface

Quadrupolar electromagnetic field from detonation of high explosive charges on the ground surface

Study on Electromagnetic Radiation Generated During Detonation

Probing detonator performance through radio wave emissions

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