A5042315731- Laser-induced spectroscopy and plasma
- Atomic and Molecular Physics
- Plasma Diagnostics and Applications
- Magnetic confinement fusion research
- Astro and Planetary Science
- Space Satellite Systems and Control
- Laser-Plasma Interactions and Diagnostics
- Dust and Plasma Wave Phenomena
- Planetary Science and Exploration
- Electromagnetic Launch and Propulsion Technology
- Ionosphere and magnetosphere dynamics
- Fusion materials and technologies
Dalian Institute of Chemical Physics
2022-2024
Chinese Academy of Sciences
2022-2024
Abstract In this paper, impulse measurement, spectral diagnostics, temporal evolution images and target ablation are employed to investigate the dynamic behaviors parameters of Nd:YAG nanosecond laser-induced aluminum plasma at different pressures laser fluences. The impulses coupling coefficients generated by increase firstly then reduce with decrease in pressure for fluences 17.22 J cm −2 20.94 , but they only drop 0.5 Torr a fluence 6.19 . fast exposure captured high-speed camera ICCD...
Abstract In this study, the influence of laser energy and pressure on propulsion performance zinc acrylonitrile butadiene styrene (ABS) is investigated by impulse measurement, fast exposure images, spectral diagnostics target ablation. A Q-switched Nd:YAG with wavelength 1064 nm pulse width 6 ns employed. The coupling coefficient generated ablation ABS are greater than that Zn, they exhibit a similar variation trend pressure. However, at higher levels, change in versus not completely...
Coaxial gun discharge plasma with high density and velocity has a number of potential applications in fusion energy, refueling, disruption mitigation tokamaks, space propulsion, acceleration dust particles to hypervelocity etc., thus become an important research topic fields nuclear physics aerospace engineering. In this paper, we report the experimental investigation on electrical transport characteristics coaxial plasma. Based optical diagnoses, voltage, current axial are measured....
The blow-by which occurs in a coaxial plasma gun is the result of reinforcing feedback caused by gradient magnetic field and component axial current due to canting sheath. has become serious negative effect limits effective use gun, so it necessary study experiment parameters that influence degree blow-by. This will not only contribute theory mode about but also give advices weakening or eliminating choosing suitable engineering field. can be observed directly photomultiplier, voltage...
Abstract Propulsion performance produced by laser ablation of polymer made acrylonitrile butadiene styrene is experimentally investigated using the first, second, and third harmonics a Nd: YAG laser. A ballistic pendulum employed to assess impulse coupling coefficient for propulsion application. Fast photography, target ablation, optical emission spectroscopy are proposed analyze energy characteristic. The under different pressures demonstrated depend on plasma properties which relevant...
The dependence of propulsion performance generated by laser ablation polyvinyl chloride on energy and pressure is investigated using Q-switched Nd: YAG with the wavelength 1064 nm. When decreased, impulse coupling coefficient rise first then decline. Such a trend also reflected in variation whole range. However, change at atmospheric not completely consistent that low levels. dynamic behavior duration plasma plume are considered to be factors for difference performance. By capturing fast...
Abstract Plasma wall interaction inevitably occurs during the operation of tokamaks. The coaxial gun device has low cost and parameters plasma produced by are close to those type I edge localized mode (ELM); therefore, is suitable in simulation experiments as a heat flux source transient events such ELM under condition H-mode International Thermonuclear Experimental Reactor. In this paper, generated discharge tapered accelerator thermal shock on tungsten target used simulate damage effect...