A metal foil spark gap switch is fabricated by using magnetron sputtering deposition technology and standard microelectronic technology. The switch has two main electrodes and a trigger electrode. Stylus profiler is e...A metal foil spark gap switch is fabricated by using magnetron sputtering deposition technology and standard microelectronic technology. The switch has two main electrodes and a trigger electrode. Stylus profiler is employed to measure the distance between the main electrodes and the dimensions of the trigger electrode. The discharge characteristics of the metal foil spark gap switch are discussed. The switch has short delay time and low time jitter. When it is fired by a conventional capacitive discharge unit (CDU), the firing circuit has low inductance and resistance. Because of its low profile structure, it can be easily integrated with the bridge foil used in a conventional exploding foil initiator system (EFIS).展开更多
One technique based on the difference spectra was developed to study the state of water in supersaturated Mg(NO3)2 aerosols. The technique could be derived from the observation that the Raman scattering and infrared a...One technique based on the difference spectra was developed to study the state of water in supersaturated Mg(NO3)2 aerosols. The technique could be derived from the observation that the Raman scattering and infrared absorbance cross sections of molecular vibrations of interest remain practically constant from diluted solutions to supersaturated aerosols. The spectra of solvated water were obtained and primarily related to the first hydration layers of solute molecules in supersaturated Mg(NO3)2 aerosols. Based on this investigation, a chain structure was proposed to occur in the supersaturated Mg(NO3)2 aerosols at low relative humidities (RHs).展开更多
This paper studies pool fires in open air and their damage laws. First, it discusses the damage criteria of thermal radiation, then presents an algorithm to predict damage radii of pool fires, and performs numerical c...This paper studies pool fires in open air and their damage laws. First, it discusses the damage criteria of thermal radiation, then presents an algorithm to predict damage radii of pool fires, and performs numerical calculations by using a software called POOLFIRE, which has been developed by the authors, finally discusses the possible ways to improve the algorithm and gives the conclusions obtained from the study.展开更多
文摘A metal foil spark gap switch is fabricated by using magnetron sputtering deposition technology and standard microelectronic technology. The switch has two main electrodes and a trigger electrode. Stylus profiler is employed to measure the distance between the main electrodes and the dimensions of the trigger electrode. The discharge characteristics of the metal foil spark gap switch are discussed. The switch has short delay time and low time jitter. When it is fired by a conventional capacitive discharge unit (CDU), the firing circuit has low inductance and resistance. Because of its low profile structure, it can be easily integrated with the bridge foil used in a conventional exploding foil initiator system (EFIS).
基金Supported by National Natural Science Foundation of China (Grant Nos. 20673010 and 20640420450)"111" Project (Grant No. B07012)China Postdoctoral Science Foundation (Grant No. 20070410466)
文摘One technique based on the difference spectra was developed to study the state of water in supersaturated Mg(NO3)2 aerosols. The technique could be derived from the observation that the Raman scattering and infrared absorbance cross sections of molecular vibrations of interest remain practically constant from diluted solutions to supersaturated aerosols. The spectra of solvated water were obtained and primarily related to the first hydration layers of solute molecules in supersaturated Mg(NO3)2 aerosols. Based on this investigation, a chain structure was proposed to occur in the supersaturated Mg(NO3)2 aerosols at low relative humidities (RHs).
文摘This paper studies pool fires in open air and their damage laws. First, it discusses the damage criteria of thermal radiation, then presents an algorithm to predict damage radii of pool fires, and performs numerical calculations by using a software called POOLFIRE, which has been developed by the authors, finally discusses the possible ways to improve the algorithm and gives the conclusions obtained from the study.
