Theoretical analysis of a pulsed-laser-driven hypervelocity flyer launcher

Lawrence, R. Jeffery; Trott, Wayne M.

doi:10.1016/0734-743x(93)90041-5

Cited by 50 publications

(31 citation statements)

References 4 publications

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“…The laser pulse is focused onto the surface of an aluminium foil of thickness ranging from 50 to 500 mm. The thickness of the vapourized layer can be neglected with respect to this initial thickness [3,7], like in similar studies involving 12-120 mm-thick flyers [1,4,8]. To increase the impulse momentum delivered by the laser-matter interaction, the plasma is confined by a water layer covering the irradiated surface.…”

Section: Experimental Techniquementioning

confidence: 98%

Use of laser-accelerated foils for impact study of dynamic material behaviour

Rességuier¹,

He²,

Berterretche³

2005

International Journal of Impact Engineering

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Section: Experimental Techniquementioning

confidence: 98%

Use of laser-accelerated foils for impact study of dynamic material behaviour

Rességuier¹,

He²,

Berterretche³

2005

International Journal of Impact Engineering

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“…The most common method for laser flyer launching, the ablation plasma-generation method [24], raises several concerns about the state of the flyer plate upon impact [10]. During launch and flight, the flyer plate loses mass, and upon impact the flyer consists of both liquid and hot solid materials.…”

Section: Introductionmentioning

confidence: 99%

“…The usual mechanism of flyer launch involves creating a metal plasma in a thin layer of the foil facing the laser [13,[23][24][25]. Rapid expansion of the plasma propels a disk of foil away from the foil sheet, creating the laser-driven flyer plate.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Laser-Launched Flyer Impacts Studied with Ultrafast Photography and Velocimetry

Банишев

Shaw

Bassett

et al. 2016

J. dynamic behavior mater.

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Pulsed lasers can launch thin metal foils at km s -1, but for precision measurements in shock compression science and shock wave spectroscopy, where onedimensional shock compression is vital, flyer plate impacts with targets must have a high degree of flatness and minimal tilt, and the flyer speeds and impact times at the target must be highly reproducible. We have developed an apparatus that combines ultrafast stroboscopic optical microscopy with photon Doppler velocimetry to study impacts of laser-launched Al and Cu flyer plates with flat, transparent glass targets. The flyer plates were 0.5 mm in diameter, and ranged from 12 to 100 lm thick, with flyer speeds up to 6.25 km s -1 . The velocity variations over 30-60 launches from the same flyer plate optic can be as low as 0.6 %, and the impact time variations can be as low as 0.8 ns. Stroboscopic image streams (reconstructed movies) show uniform, flat impacts with a glass target. These stroboscopic images can be used to estimate the tilt in the flyer-target impact to be \1mrad.

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“…Ordinarily the flyers are launched by short-pulse lasers that vaporize a portion of the foil to create a rapidly-expanding drive plasma [4]. This launch process sends a reverberating shock into the foil, and the foil is hot and losing mass as it flies.…”

Section: Laser-launched Flyer Platesmentioning

confidence: 99%

Shock compression dynamics under a microscope

Dlott

2017

AIP Conference Proceedings

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Abstract.Our laboratory has developed a tabletop laser miniflyer launcher used for a wide variety of studies in the physical and chemical sciences. The flyers, typically 0.7 mm in diameter, can be used to shock microgram quantities of interesting materials. Frequently 100 shock experiments per day are performed. A microscope objective transmits the photon Doppler velocimeter (PDV) flyer plate diagnostic and various laser beams, and collects signals from the shocked materials that can be transmitted to video cameras, spectrographs, streak cameras, etc. In this paper I describe the flyer plate apparatus and then discuss three recent efforts: (1) Shock dissipation in nanoporous media; (2) Probing micropressures in shocked microstructured media; and (3) Shock initiation of nanotechnology reactive materials.

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Theoretical analysis of a pulsed-laser-driven hypervelocity flyer launcher

Cited by 50 publications

References 4 publications

Use of laser-accelerated foils for impact study of dynamic material behaviour

Use of laser-accelerated foils for impact study of dynamic material behaviour

High-Speed Laser-Launched Flyer Impacts Studied with Ultrafast Photography and Velocimetry

Shock compression dynamics under a microscope

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