Plasma Source Pulsed
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Construction and measurement of an electromagnetic noise generator based on an automotive coil
This article covers the design of an electromagnetic noise generator which uses an automotive coil as the main component. A short theoretical analysis covers the generation of high voltage pulsed current from the available DC source originated from the battery. An electronic dimmer, a circuit used to control the brightness of a light, by controlling the effe
Rev. Bras. Ensino Fís.. Publicado em: 22/06/2017
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2. Desenvolvimento de um sistema de nitretação por plasma em fonte pulsada e sua influencia sobre a nitretação do titânio
A nitretação por plasma pulsado é uma solução utilizada atualmente na indústria metalúrgica para resolver problemas existentes anteriormente durante tratamento de peças usando plasma de tensão contínua. Esses problemas consistiam, principalmente, em efeito de bordas e abertura de arcos causados devido a não uniformidade de campos elétricos em sup
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/10/2011
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3. Plasma focus as a powerful hard X-ray source for ultrafast imaging of moving metallic objects
Using high energy, pulsed X-rays, generated by a 4.7 kJ Plasma Focus operated with deuterium - argon admixtures, images of fast rotating metallic pieces were obtained. This illustrates the potential application of Plasma Focus devices for non invasive scanning of moving metallic objects. The samples for radiographic imaging were located outside the plasma fo
Brazilian Journal of Physics. Publicado em: 2004-12
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4. Plasma sintering of unalloyed iron: a study of surface porosity
Samples of unalloyed iron powder were compacted and sintered in an abnormal glow discharge, generated in a gas mixture of 80% Ar + 20% H2 by using a pulsed power source. The samples were placed on a holder, acting as the discharge cathode, and were heated by the bombardment of ions, strongly accelerated in the cathode sheath. Sintering was performed at tempe
Materials Research. Publicado em: 2004-06
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5. X-ray micrography and imaging of Escherichia coli cell shape using laser plasma pulsed point x-ray sources.
High-resolution x-ray microscopy is a relatively new technique and is performed mostly at a few large synchrotron x-ray sources that use exposure times of seconds. We utilized a bench-top source of single-shot laser (ns) plasma to generate x-rays similar to synchrotron facilities. A 5 microlitres suspension of Escherichia coli ATCC 25922 in 0.9% phosphate bu