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Observed preliminary breakdown pulses of intracloud discharges
2017 International Conference on High Voltage Engineering and Power Systems (ICHVEPS), 2017Compact intracloud discharge (CID) pulses have strong radio frequency radiation, large amplitude and a short duration of several microseconds. There are two types of CIDs, namely positive and negative CID. CID electric field signatures appear without any detectable initial breakdown process.
Primas Emeraldi, Ariadi Hazmi
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Properties of preliminary breakdown processes in Scandinavian lightning
Journal of Atmospheric and Solar-Terrestrial Physics, 2008Lightning flashes are usually preceded by preliminary breakdown processes (PBPs) before a stepped leader is initiated. These breakdown processes are not well understood. An early model, the so-called BIL model, has been called into question in later studies.
Jakke S. Mäkelä +4 more
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Microchip Laser-Induced Breakdown Spectroscopy: A Preliminary Feasibility Investigation
Applied Spectroscopy, 2004A commercial, 7 μJ/pulse, 550 ps microchip laser is used to induce plasma on Pb, Si, Cu, Fe, Ni, Ti, Zn, Ta, and Mo foils and a Si wafer. The measured plasma lifetime is comparable with the duration of the laser pulse (a few ns). The plasma continuum radiation is low, while some of the strong resonance lines (e.g., Zn 213.86 nm) show self-reversal ...
I B, Gornushkin +4 more
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Influence of Preliminary Electron Feeding on Breakdown of Air by Laser
Advanced Solid-State Photonics, 2009We examined the influence of preliminary feeding of electrons from the small breakdown produced by the femtosecond laser pulse into the breakdown produced by nanosecond laser pulse. We also observed the patterns of plasma emissions.
Hirohide Furutani +4 more
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The breakdown of wood in the side arm of a large river: Preliminary investigations
SIL Proceedings, 1922-2010, 1991(1991). The breakdown of wood in the side arm of a large river: Preliminary investigations. SIL Proceedings, 1922-2010: Vol. 24, No. 3, pp. 1785-1788.
Hassan Chergui, Eric Pattee
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Preliminary observations on the breakdown of coir in soil
Plant and Soil, 1979Coco fibres are used as a wrapper of plastic drain pipes. An investigation has been made of the decomposition of these fibres in soil. Unaffected and partly decayed fibres were washed and placed on cellulose-containing agar plates. Unaffected coir rarely showed growth. Around the partly decayed fibres nearly always fungi developed.
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Preliminary experimental results on water breakdown in tens nanoseconds region
2011 IEEE International Conference on Dielectric Liquids, 2011Deionized water is a good dielectric material. In this paper, preliminary investigations are carried out on water breakdown in tens nanoseconds region via a switch with “point-plane” electrodes. The switch is set up on the output port of a wave erection Marx generator, which can deliver a minus high voltage pulse with an amplitude of 0∼300 kV, and a ...
Jingming Gao +4 more
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Preliminary evaluation of laser-induced breakdown spectroscopy for tissue classification
Spectrochimica Acta Part B: Atomic Spectroscopy, 2009Laser-induced breakdown spectroscopy (LIBS) is an on-line, real-time technology that can produce immediate information about the elemental contents of tissue samples. We have previously shown that LIBS may be used to distinguish cancerous from non-cancerous tissue.
Fang-Yu Yueh +3 more
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Preliminary estimate of the cost breakdown for the Fusion Ignition Experiment IGNITEX
IEEE Thirteenth Symposium on Fusion Engineering, 2003A preliminary estimate of the cost breakdown for the Fusion Ignition Experiment (IGNITEX) is presented. The IGNITEX concept proposed by M.N. Rosenbluth, W.F. Weldon, and H.H. Woodson (1987) is based on B. Coppi's idea for a compact thermonuclear experiment and has the potential to produce and control ignited plasmas at a relatively low cost ($130M ...
R. Carrera +6 more
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KARAKTERISTIK PRELIMINARY BREAKDOWN PETIR TERMINOLOGI BREAKDOWN-LEADER (BL) SEBELUM SAMBARAN NEGATIF PERTAMA [PDF]
, 2015 Latar Belakang Kota Padang merupakan salah satu daerah yang memiliki potensi cukup besar dalam kejadian petir setiap tahunnya. Hal ini karena kota Padang secara geografis terletak disekitar garis ekuator dan mendapatkan intensitas cahaya matahari yang merata sepanjang tahunnya.
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