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090			_a663286
100			_a20210204a2020 k y0engy50 ba
101	0		_aeng
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181		0	_ai
182		0	_ab
200	1		_aExpansion velocity of plasma corona surrounding exploding aluminum foil _fA. G. Russkikh, A. S. Zhigalin, V. I. Oreshkin, R. B. Baksht
203			_aText _celectronic
300			_aTitle screen
320			_a[References: 16 tit.]
330			_aThis paper presents the results of measuring the expansion velocity of the plasma generated by an electrical breakdown occurring along an exploding aluminum foil. The test foils were 6 μm thick and 20 mm long; their width was varied in the range of 0.93 to 1.05 mm. The foil explosion was initiated by a sinusoidal current of period 1780 ns. The current amplitude was varied by varying the charge voltage of a 0.25-μF capacitor (10, 20, and 30 kV), and it was about 6.5, 14, and 22 kA, respectively. The plasma velocity measurements were performed using two grounded probes located at different distances from the edges and the center of the exploding foil (from 2 to 16 mm). The time interval was measured between the occurrence of a probe signal and the initiation of breakdown along the foil. The plasma expansion velocity was estimated from the measured time of flight of the plasma from the foil to a probe. Besides the probe measurements, optical images of the exploding foil and of the expanding luminous plasma were recorded using an HFSC Pro framing camera with an exposure time of 3 ns. These investigations made it possible to visualize the shape of the forming plasma sheath and to measure the expansion velocity of the bulk of the desorbed gases and metal vapor as a function of time. In addition, they gave ideas of the processes occurring in the near-electrode regions at the time of breakdown initiation.
333			_aРежим доступа: по договору с организацией-держателем ресурса
461			_tPhysics of Plasmas _d1989-
463			_tVol. 27, iss. 3 _v[033505, 8 р.] _d2020
610	1		_aэлектронный ресурс
610	1		_aтруды учёных ТПУ
610	1		_aплазма
610	1		_aалюминиевая фольга
701		1	_aRusskikh _bA. G. _gAleksandr Gennadievich
701		1	_aZhigalin _bA. S. _gAleksandr Sergeevich
701		1	_aOreshkin _bV. I. _cspecialist in the field of non-destructive testing _cSenior researcher of Tomsk Polytechnic University, Doctor of physical and mathematical sciences _f1960- _gVladimir Ivanovich _2stltpush _3(RuTPU)RU\TPU\pers\33779
701		1	_aBaksht _bR. B. _gRina Borisovna
712	0	2	_aНациональный исследовательский Томский политехнический университет _bИнженерная школа неразрушающего контроля и безопасности _bОтделение контроля и диагностики _h7978 _2stltpush _3(RuTPU)RU\TPU\col\23584
801		2	_aRU _b63413507 _c20210204 _gRCR
856	4		_uhttps://doi.org/10.1063/1.5140524
942			_cCF