Generation of electric fields by dust grains during the explosions of condensed explosive charges in air

Erokhin, M. A.; Kondrat'ev, A. A.; Litvinenko, I. V.; Matveenko, Yu. I.

doi:10.1134/1.1435900

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…In addition to these possibilities, several experimental data indicate that other phenomena are also responsible for the latter type of conduction, although the mechanisms are unclear. [18][19][20] It is expected that transmission electron microscopy ͑TEM͒ will offer useful information in understanding the complex internal structure of the Ag-based conductive adhesive, which appears to be influenced by a large density of electric current. We tried to examine these essential problems by using the advanced techniques of TEM, such as the simultaneous measurement of conductivity and microstructure of the adhesive by using a unique apparatus ͑double-probe piezodriving holder 21,22 ͒ to control microprobes.…”

Section: Introductionmentioning

confidence: 99%

Local conductivity and electric field analysis of Ag-based conductive adhesive by transmission electron microscopy

Kawamoto

Murakami

Shindo

2010

Journal of Applied Physics

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The conduction mechanism in Ag-based conductive adhesive, which has attracted the attention of researchers, has been intensively studied by the in situ observations of transmission electron microscopy (TEM) and by using special methods that employ the use of microprobes; Ag-based conductive adhesive is considered as an alternative to Pb-free solders. A current versus voltage (I-V) curve measured by using a microscope exhibited peculiar fluctuations, which implied an irreversible change in the internal structure of a cured adhesive. TEM observations showed a local shape change in Ag agglomerations, such as the formation of small horns, in a sample that was subjected to a large electric current of 1 μA. Electron holography data, which revealed the inhomogeneous distribution of equipotential lines in the sample, also implied an essential role of morphological change in the conduction properties of Ag-based conductive adhesive.

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Section: Introductionmentioning

confidence: 99%

Local conductivity and electric field analysis of Ag-based conductive adhesive by transmission electron microscopy

Kawamoto

Murakami

Shindo

2010

Journal of Applied Physics

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“…The detonation physics regarding the thermodynamic effects of explosive detonation has been extensively researched. However, the mechanism of electromagnetic radiation generated by the detonation is still not well understood and a universally applicable mathematical model has not yet been developed [1,2]. The electromagnetic radiation generated by the explosion of explosives has attracted attention in many fields.…”

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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Generation of electric fields by dust grains during the explosions of condensed explosive charges in air

Cited by 2 publications

References 4 publications

Local conductivity and electric field analysis of Ag-based conductive adhesive by transmission electron microscopy

Local conductivity and electric field analysis of Ag-based conductive adhesive by transmission electron microscopy

Study on Electromagnetic Radiation Generated During Detonation

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