MIT MRSEC - Materials Reseach Science and Engineering Center

X-ray Diffraction Shared Experimental Facility

Rigaku Chromium Source RU-300 with Rotaflex and D-Max/B

Instrument Status

This instrument is shutdown.

RU-300 Now Running on Chromium

The RU-300 instrument has received a chromium anode in May 2014. The new chromium anode produces longer wavelength X-rays than copper, which eliminates the problems of absorption and fluorescence from iron and cobalt-containing samples. However, you can expect your diffraction peaks to show up at higher values of 2Theta. In addition, you may need to scan for a longer time to achieve the same signal to noise ratio. For data analysis in HighScore Plus, you will want to set the X-ray wavelength to chromium under the Document Settings window.

Please use the new goniometer limits and detector high voltage settings found on the computer monitor.

Instrument Description

The RU-300 uses a high-power X-ray source along with a diffracted beam monochromator for rapid, high-quality data collection from polycrystalline samples. In addition, this instrument normally features a chromium anode, which is useful for reducing unwanted fluorescence from samples containing iron and cobalt. However, the goniometer and optics are limited: Your samples must be mounted vertically, and the instrument can only be used in Bragg-Brentano parafocusing geometry for polycrystalline materials.


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