2021
DOI: 10.1063/5.0061699
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Energy conversion efficiency of electrical exploding foil accelerators

Abstract: We evaluate the energy conversion efficiency of an electrical exploding foil accelerator that accelerates a thin dielectric foil (called the flyer) to more than 1 km/s, which is propelled by electrically exploded bridge material. The effective flyer mass ejected from the accelerator is estimated by impulse measurements obtained using a gravity pendulum as well as by time-resolving flyer velocity measurements obtained using a photonic Doppler velocimetry system. For two different bridge sizes (0.2 and 0.4 mm), … Show more

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Cited by 4 publications
(4 citation statements)
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“…A reliable flyer material needs to be robust, able to withstand an impulsive launch, and remain intact at speed approaching supersonic velocity. Various materials such as silicon, 3 polymethyl methacrylate (PMMA), 7 Mylar, 8 SU-8, 9 polyimide (PI), [10][11][12] parylene C (PC), 13 and PC/metal alloy 14,15 have been used for the preparation of FFI flyer. Compared with other materials, PI is a more commonly used flyer material that has several distinct advantages such as favorable dielectric properties and high thermal stability.…”
Section: Introductionmentioning
confidence: 99%
“…A reliable flyer material needs to be robust, able to withstand an impulsive launch, and remain intact at speed approaching supersonic velocity. Various materials such as silicon, 3 polymethyl methacrylate (PMMA), 7 Mylar, 8 SU-8, 9 polyimide (PI), [10][11][12] parylene C (PC), 13 and PC/metal alloy 14,15 have been used for the preparation of FFI flyer. Compared with other materials, PI is a more commonly used flyer material that has several distinct advantages such as favorable dielectric properties and high thermal stability.…”
Section: Introductionmentioning
confidence: 99%
“…To study the electrical explosion performance of the in situ prepared polyimide flyer, a photo doppler velocity (PDV) measurement system, based on the doppler frequency shift effect, is used to measure the velocity of the polyimide flyer [ 4 , 17 ]. The explosion current and voltage of the exploding foil were measured by a homemade device, whose schematic diagram is shown in Figure 3 .…”
Section: Methodsmentioning
confidence: 99%
“…Under the action of high pressure and heavy current, exploding foil generates high-temperature and high-pressure plasma to drive high-speed flyer to detonate explosives. So far, a range of materials such as polyimide [ 2 , 4 , 5 ], parylene C [ 6 ], polymethyl methacrylate [ 7 ], polyester [ 8 ], silicon [ 9 ], and PC/metal alloy [ 10 ] have been designed as flyer plate. Of the flyer materials mentioned above, polyimide is the most attractive engineering polymer [ 11 ], which exhibits thermal stability, outstanding mechanical properties, high radiation resistance, and excellent dielectric properties.…”
Section: Introductionmentioning
confidence: 99%
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