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A triboelectric x-ray source
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DOI：10.1063/1.3570688.png)
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A source of x-rays capable of exciting the characteristic emission lines of Mo and Ag is demonstrated. The device, which requires no external high voltage supply, uses the triboelectric effect to produce a charge imbalance when silicone and a metal-loaded epoxy are made to repeatedly contact each other in vacuum. This provides a source of 40 keV electrons which generate bremsstrahlung and characteristic x-rays at a rate of > 10(5) per contact cycle. By increasing the repetition rate of the contact cycle the viability of a device that emits 10(8) x-ray photons per second is suggested, making triboelectricity an inexpensive source of x-rays. The form factors and simplicity of such devices open up interesting possibilities for x-ray imaging. (C) 2011 American Institute of Physics. [doi:10.1063/1.3570688]
Keyword:
STICK-SLIP FRICTION
CONTACT ELECTRIFICATION
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3.6
论文数:
10.4W
被引数:
17.8W
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