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10 April 2007 Emission of multiple types of radiation using a miniature ferroelectric-based single source
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NASA exploration missions are increasingly seeking to determine existence of past or present life, detect water and examine the mineralogy of various planets in the solar system. Determination of the surface and bulk properties of selected samples currently requires multiple analytical instruments, each with an independent type of radiation source. Using multitude of instruments requires high power, mass and volume resulting in high cost and complexity. Recently, the authors developed a ferroelectric based radiation source, which they named Ferrosource, that was demonstrated to emit five radiation types enabling a new generation of compact, low power, low mass multifunctional NDE analytical instruments. The emitted radiation types include visible light, ultraviolet, X-ray, as well as electron and ion beams. These radiation types are already in use in a multitude of instruments for detecting water, performing mineralogical/chemical analysis and for identifying biological markers. This ferroelectric-based source consists of a disk having a continuous ground electrode on one side and a grid-shaped cathode on the other side. This source is placed in a vacuum tube and is used to generate plasma by switching high voltage pulses and the plasma is harnessed to generate the radiation. To make the source more practical and applicable for NASA missions it was miniaturized by about 50 times the original chamber volume and efforts were made to increase its efficiency to compensate for the size reduction. A series of experiments were performed to demonstrate the capability of the developed miniature source. The source, the experiments, and the test results will be described and discussed in this paper.
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Yoseph Bar-Cohen, Shyh-Shiuh Lih, Xiaoqi Bao, Stewart Sherrit, and Mircea Badescu "Emission of multiple types of radiation using a miniature ferroelectric-based single source", Proc. SPIE 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007, 653008 (10 April 2007);

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