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1,214 results on '"Yu, M. Y."'

220. Laser-driven inertial ion focusing

Author

Zhuo, H. B., primary, Yu, Wei, additional, Yu, M. Y., additional, Xu, H., additional, Wang, X., additional, Shen, B. F., additional, Sheng, Z. M., additional, and Zhang, J., additional

Published
2009
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241. Effects of the System Temperature on Dust Cluster Formation in Plasma.

Author

Song, Y. L., Huang, F., Chen, Z. Y., Liu, Y. H., Yu, M. Y., Chen, K. F., and Wang, L.

Subjects
DUSTY plasmas, GAS phase reactions, MOLECULAR dynamics, MEAN square algorithms, SIMULATION methods & models
Abstract

Effects of the system temperature on dust aggregation in plasmas are investigated using two-dimensional molecular dynamics simulations. It is shown that as the system temperature increases, the boundary of the clusters becomes gradually irregular (i.e., deviating from sphere-like), and the cluster system gradually changes from solid to liquid and finally to gas state. The mean square displacement, mean nearest-neighbor distance in the clusters, cluster size and coupling parameter of the system are obtained and the properties of the system structure and dynamics are investigated. The time τ needed for reaching equilibrium for different temperatures is obtained. It is shown that τ firstly decreases and then increases with the temperature, indicating that there is an optimum temperature allowing a dust aggregation to reach an equilibrium state most rapidly. The simulation results agree qualitatively with the experimental observations. (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR]

Published
2015
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242. Target normal sheath acceleration of foil ions by laser-trapped hot electrons from a long subcritical-density preplasma.

Author

Luan, S. X., Wei Yu, Yu, M. Y., Zhuo, H. B., Han Xu, Wong, A. Y., Wang, J. W., Shen, B. F., and Xu, Z. Z.

Subjects
PLASMA sheaths, PLASMA acceleration, HOT carriers, ION traps, PLASMA density, PLASMA lasers
Abstract

In a long subcritical density plasma, an ultrashort ultraintense laser pulse can self-organize into a fast but sub-relativistic propagating structure consisting of the modulated laser light and a large number of trapped electrons from the plasma. Upon impact of the structure with a solid foil target placed in the latter, the remaining laser light is reflected, but the dense and hot trapped electrons pass through the foil, together with the impact-generated target-frontsurface electrons to form a dense hot electron cloud at the back of the target suitable for enhancing target normal sheath acceleration of the target-backsurface ions. The accelerated ions are well collimated and of high charge and energy densities, with peak energies a full order of magnitude higher than that from target normal sheath acceleration without the subcritical density plasma. In the latter case, the space-charge field accelerating the ions is limited since they are formed only by the target-frontsurface electrons during the very short instant of laser reflection. [ABSTRACT FROM AUTHOR]

Published
2014
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246. Identification of molecular markers and signaling pathway in endometrial cancer in Hong Kong Chinese women by genome-wide gene expression profiling

Author

Wong, Y F, primary, Cheung, T H, additional, Lo, K W K, additional, Yim, S F, additional, Siu, N S S, additional, Chan, S C S, additional, Ho, T W F, additional, Wong, K W Y, additional, Yu, M Y, additional, Wang, V W, additional, Li, C, additional, Gardner, G J, additional, Bonome, T, additional, Johnson, W B, additional, Smith, D I, additional, Chung, T K H, additional, and Birrer, M J, additional

Published
2006
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