INSTRUMENT MODIFICATIONS: BLUE LIGHT LED SAMPLE ILLUMINATION (2009)

To improve the optical resolution of the sample viewing area a Blue Light LED has been adapted in place of the standard white light. The following photos show a comparison of white light to blue light illumination. The numbers specify the spacing between parallel lines in microns. Top: illumination by CAMECA white light system.  Bottom: Illumination using a blue LED at WiscSIMS improving the resolution from ~3.5 to ~2.5 μm. See more detailed information (pdf).

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