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We discuss the design and characterization of a compact gas-puff nozzle and plasma gun assembly that will be used in Staged Z-pinch experiments1, where gas liners are imploded onto an on-axis target-plasma column. Previous work on the Staged Z-pinch demonstrated that gas liners can efficiently couple the energy and produce a uniform implosion on a target-plasma.2
Previous Staged Z-pinch experiments have demonstrated that gas liners (or puffs) can efficiently couple energy to a target plasma and implode uniformly, producing plasmas in High Energy Density (HED) regimes. In these experiments, a 50 kJ, 1.5 MA, 1 μs current driver was used to implode a magnetized, Kr liner onto a D+ target, producing 1010 neutrons per shot. Time-of-flight data suggested that primary...
A, pulsed hot dense compact plasma torus (CT) in a Field Reversed Configuration (FRC), of few keV temperature, density (1023−1024) m−3, and a life time of several microseconds is of great interest for fusion research as an alternative to already canonical inertial, magnetic stationary approaches and magnetized target fusion [1–3]. This paper provides a brief description of prototypical experiments...
Chromatic dispersion is a fundamental optical property of materials related to physical quantities such ad density and chemical composition. The dispersion can be measured by multi-wavelength interferometry which is more robust compared with single wavelength interferometry since common-phase noise, e.g., optical path length fluctuations, are efficiently compensated. Therefore, a sensitive and fast...
The possibility of a global monitoring of hydrological parameters in Africa was endeavored by using both active and passive microwave sensors. Two ALOS/PALSAR images of Ethiopia were compared with optical data and ground information collected on site by the Istituto Agronomico per l'Oltremare, in Florence. Moreover, AMSR-E data were used as a reference for investigating soil moisture and vegetation...
This paper describes a C-Band T/R Module (TRM) developed by Thales Alenia Space Italia as element of the Electronic Front-End (EFE) for Synthetic Aperture Radar (SAR) antenna developed for Sentinel-1 Program under the responsibility of the European Commission and the European Space Agency in the frame of the Global Monitoring for Environment and Security (GMES). TRM includes Power and Low Noise amplification...
This paper presents a new approach for estimating physical properties of deformable models from experimental measurements. In contrast to most previous work, we introduce a new method based on particle filters which identifies the different stiffness properties for spring-based models. This approach addresses some important limitations encountered with gradient descent techniques which often converge...
The advances in electrical engineering apparata, especially in electric machinery, are at present bound up with the improvements of electrical engineering materials characteristics, specifically with that of electric insulating materials.
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