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Showing 1-25 of 356 resultsfor "Index Terms":Tens Of Microseconds
"Index Terms":Tens Of Microseconds
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Study of laser-induced breakdown in a 30-cm air gap under a uniform field
A. Desparois;B. La Fontaine;A. Bondiou-Clergerie;Ching-Yuan Chien;D. Comtois;T.W. Johnston;J.-C. Kieffer;H.P. Mercure;H. Pepin;F.A.M. Rizk;F. Vidal
In an ongoing effort to understand how ultrashort pulse lasers can be used to trigger spark discharges in air over considerable distances at electric fields much below that of self-breakdown, we have studied the influence of the laser pulse energy on the development of an electrical discharge over a 30-cm air gap in a uniform field geometry. In addition to the purely electrostatic effects associat...Show More
An Experimental Study on Minimum Arc Current for Arcs Longer Than a Few Microseconds in Relay Contacts and Possible Reinterpretation of the Meaning Thereof
A minimum arc current value for each contact material is one of the very important factors in consideration and comparison of arc discharge characteristics for proper selection of contact materials. In this paper, Ag and Ag alloy contacts were operated to break various dc load currents in the range of up to 1.5 A with 10-30 V, and occurrence rates of break arcs (having durations equal to or longer...Show More
Current-carrying plasma and the magnetic field ambiguity in classical MHD theory
IEEE Conference Record - Abstracts. 1992 IEEE International Conference on Plasma
Year: 1992 | Conference Paper |
First Page of the Article
Show MoreInvestigation of collisional processes in a laser produced plasma
IEEE Conference Record - Abstracts. 1992 IEEE International Conference on Plasma
Year: 1992 | Conference Paper |
First Page of the Article
Show MoreExplosively-driven MED Generator Regenerative Magnetic Field
IEEE Conference Record - Abstracts. 1992 IEEE International Conference on Plasma
Year: 1992 | Conference Paper |
First Page of the Article
Show MoreThe fibre-optical measuring means for the apparatus of the superhigh frequency band
IEEE Conference Record - Abstracts. 1992 IEEE International Conference on Plasma
Year: 1992 | Conference Paper |
First Page of the Article
Show MorePhoton counting and timing detector modules for single-molecule spectroscopy and DNA analysis
The 17th Annual Meeting of the IEEELasers and Electro-Optics Society, 2004. LEOS 2004.
Year: 2004 | Conference Paper |
Cited by: Papers (1)
Compact and rugged modules based on planar epitaxial single photon avalanche diode (SPAD) devices and monolithic active quenching and reset circuits (i-AQC) attain remarkable detector performance: quantum efficiency with 45% peak at 550 nm wavelength , dark-counting rate less than 10 c/s, photon timing better than 60 ps.Show More
Summary form only given, as follows. In conventional plasma immersion ion implantation (PIII), the voltage pulse duration is typically on the order of a few tens of microseconds. However, a longer pulse width brings a number of advantages to the hydrogen PIII/ion-cut and water PIII processes, for example. They include reduction of surface hydrogen, implantation damage, and metallic contamination. ...Show More
Summary form only given. Microwave resonators are used to generate microplasmas in atmospheric-pressure argon. We investigate the ignition and filamentation dynamics in two systems with different techniques for modulating the microwave power: a diode-switched resonator in an array1 with constant input power, and a single resonator with pulsed input power. The plasma evolution is examined using tim...Show More
Current full-waveform inversion of the return stroke channel based on single-station electric field observations
Because it is difficult to directly measure lightning currents, the waveform inversion of currents using easily measured electromagnetic field data is important and useful. In this paper, existing transmission models for return stroke currents are used through simulation research and comparative analyses, which results in a mixed model of transmission line model and modified-transmission line line...Show More
Measurement of Time Dependent Reflection, Transmission, and Absorption in Laser Driven Silicon and GaAs Switches for 250 GHz Radiation
Guangjiang Li;Elliot L. Claveau;Sudheer K. Jawla;Samuel C. Schaub;Michael A. Shapiro;Richard J. Temkin
The reflectance (R) and transmittance (T) of Si and GaAs wafers irradiated by a 6 ns pulsed, 532 nm laser have been studied for s- and p-polarized 250 GHz radiation as a function of laser fluence and time. The measurements were carried out using precision timing of the R and T signals, allowing an accurate determination of the absorptance (A) where A = 1-R-T. Both wafers had a maximum reflectance ...Show More
Experimental study the electric characteristics of the deionized water and its mixture with ethylene glycol in tens microsecond regime and its application
Jian-hua Yang;Ren He-ming;Jing-ming Gao;Wen Jianchun;Zhou Xiang;Jie Xu
2011 IEEE International Conference on Dielectric Liquids
Year: 2011 | Conference Paper |
Cited by: Papers (2)
As it is known that the breakdown electric characteristics of deionized water in the pulsed forming line (PFL) depends on the charging time of voltage. In the constructing of the high-current repetitively pulsed accelerator, the PFL usually is charged by the capacitors through the pulse transformer, in order to realize the repetition operation, the semiconductor switches such as thyristors general...Show More
Real-Time power management for a multi-performance processor
2009 International SoC Design Conference (ISOCC)
Year: 2009 | Conference Paper |
Cited by: Papers (1)
This paper presents an energy efficient embedded processor which can be used as a design alternative for the dynamic voltage scaling (DVS) processors in embedded real-time system design. The processor consists of multiple same-ISA PE (processing element) cores and a selective set-associative cache memory. The PE-cores differ in their clock speeds and energy consumptions. Only a single PE-core is a...Show More
Proactive Run-Time Mitigation for Time-Critical Applications Using Dynamic Scenario Methodology
2022 Design, Automation & Test in Europe Conference & Exhibition (DATE)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Energy saving is important for both high-end processors and battery-powered devices. However, for time-critical application such as car auto-driving systems and multimedia streaming, saving energy by slowing down speed poses a threat to timing guarantee of the applications. The worst-case execution time (WCET) is a widespread solution to this problem, but its static execution time model is not suf...Show More
Townsend-type breakdown as a criterion for high-frequency vacuum arc interruption at submillimeter gaps
In vacuum circuit breakers, multiple reignitions give rise to HF current arcing ( approximately=500 A; approximately=200 kHz). Due to the small contact distance and the very large current gradient, at every arc-current zero pressures of several tens of millibars can be expected. Very soon thereafter ( approximately=30 ns) this gap is dielectrically stressed by the first component of the restriking...Show More
Performance analysis of a burst-frame-based MAC protocol for ultra-wideband ad hoc networks
IEEE International Conference on Communications, 2005. ICC 2005. 2005
Year: 2005 | Conference Paper |
Cited by: Papers (8)
Ultra-wideband (UWB) communication is becoming an important technology for future wireless personal area networks (WPANs). A critical challenge in high data rate UWB system design is that a receiver usually needs tens of micro-seconds or even tens of milliseconds to synchronize with the transmitted signals, known as the timing acquisition problem. Such a long synchronization time will cause signif...Show More
An in-band full-duplex transceiver prototype with an in-system automated tuning for RF self-interference cancellation
Mina Mikhael;Barend van Liempd;Jan Craninckx;Rafik Guindi;Björn Debaillie
1st International Conference on 5G for Ubiquitous Connectivity
Year: 2014 | Conference Paper |
Cited by: Papers (7)
This paper presents a transceiver prototype capable of in-band full duplex communication. Apart from a conventional transceiver and antenna, this prototype relies on a tunable electrical balance duplexer to minimize the in-band self-interference at RF. Such duplexer however requires continuous-time tuning to ensure accurate impedance balancing with the antenna across different environmental condit...Show More
Energy-Localized Near-Interface Traps Active in the Strong-Accumulation Region of 4H-SiC MOS Capacitors
Peyush Pande;Sima Dimitrijev;Daniel Haasmann;Hamid Amini Moghadam;Philip Tanner;Jisheng Han
Near-interface traps (NITs) with energy levels aligned to the conduction band and spatially located close to the SiO2/SiC interface are responsible for significant degradation of the channel-carrier mobility in 4H-SiC MOSFETs. In this paper, we investigate fast trapping and detrapping of the conduction-band electrons by NITs with energy levels localized between 0.13 and 0.23 eV above the bottom of...Show More
Development of a Liquid Scintillator Neutron Multiplicity Counter (LSMC)
Sy Stange;Peter J. Karpius;Katherine C. Frame;William A. Clay;Timothy E. Elmont;Ernst-Ingo Esch;Norman A. Johansen;Duncan W. MacArthur;Edward A. McKigney;Morag K. Smith;Jonathan L. Thron;Richard B. Williams
2006 IEEE Nuclear Science Symposium Conference Record
Year: 2006 | Conference Paper |
A new neutron multiplicity counter is being developed that utilizes the fast response of liquid scintillator detectors. The ability to detect fast (vs. moderated) fission neutrons makes possible a coincidence gate on the order of tens of nanoseconds (vs. tens of microseconds). A neutron counter with such a narrow gate will be much less sensitive to accidental coincidences making it possible to mea...Show More
K - change: Is it a static field of a chaotic pulse burst?
Sankha Nanayakkara;S.P.A. Vayanganie;T.A.L.N. Gunasekera;M. Fernando;V. Cooray
2014 International Conference on Lightning Protection (ICLP)
Year: 2014 | Conference Paper |
Electric field changes associated with K - changes have been studied since 1956. In this study, the electric field variations of K changes observed in the tropics, in Sri Lanka, was analyzed to study the inter K change duration, K change duration, and possible contribution from other activities on K changes. Selected 144 k-changes of 64 lightning flashes, measured with 6.4 ns sampling rate were us...Show More
Microelectromechanical-Systems-Based Switches for Power Applications
Chris Keimel;Glenn Claydon;Bo Li;John N. Park;Marcelo E. Valdes
A new system for switching electrical power using microelectromechanical systems (MEMS) is presented. The heart of the system utilizes custom-designed MEMS switching device arrays that are able to conduct current more efficiently and can open orders of magnitude faster than traditional macroscopic mechanical relays. Up to now, MEMS switches have been recognized for their ability to switch very qui...Show More
Direct Lightning Strikes to Test Power Distribution Lines—Part II: Measured and Modeled Current Division Among Multiple Arresters and Grounds
Jens Schoene;Martin A. Uman;Vladimir A. Rakov;Angel G. Mata;Carlos T. Mata;Keith J. Rambo;Jason Jerauld;Douglas M. Jordan;George H. Schnetzer
The division of return stroke current among the arresters and groundings of two unenergized test distribution lines, one horizontally configured and the other vertically configured, was studied at the International Center for Lightning Research and Testing in Florida. The division of return stroke currents for the vertically configured line was initially similar to the division on the horizontally...Show More
Space charge and soil ionization: an electro-kinetic approach
This paper proposes an electro-kinetic model of soil ionization for concentrated electrodes submitted to impulse currents. This approach allows a better understanding of the dynamic response of earth rods. Since current density attains a sufficient value around the electrode, ionization appears in the soil and produces a transient reduction of the grounding resistance. Experimental results, obtain...Show More
AgileWatts: An Energy-Efficient CPU Core Idle-State Architecture for Latency-Sensitive Server Applications
Jawad Haj Yahya;Haris Volos;Davide B. Bartolini;Georgia Antoniou;Jeremie S. Kim;Zhe Wang;Kleovoulos Kalaitzidis;Tom Rollet;Zhirui Chen;Ye Geng;Onur Mutlu;Yiannakis Sazeides
2022 55th IEEE/ACM International Symposium on Microarchitecture (MICRO)
Year: 2022 | Conference Paper |
Cited by: Papers (9)
User-facing applications running in modern datacenters exhibit irregular request patterns and are implemented using a multitude of services with tight latency requirements (30–250$\mu$s). These characteristics render existing energy-conserving techniques ineffective when processors are idle due to the long transition time (order of 100$\mu$s) from a deep CPU core idle power state (C-state). While ...Show More
AgileWatts: An Energy-Efficient CPU Core Idle-State Architecture for Latency-Sensitive Server Applications
Jawad Haj Yahya;Haris Volos;Davide B. Bartolini;Georgia Antoniou;Jeremie S. Kim;Zhe Wang;Kleovoulos Kalaitzidis;Tom Rollet;Zhirui Chen;Ye Geng;Onur Mutlu;Yiannakis Sazeides
Year: 2022 | Conference Paper |
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