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lee988325

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【答案】应助回帖

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感谢参与,应助指数 +1
kunpeng1782: 金币+10, MN-EPI+1, 谢谢您的回答 2013-07-28 15:52:41
fan_xmz: 金币+5, ★★★★★最佳答案 2013-07-28 19:01:17
The K-absorption-edge (K-to-continuum threshold) for nickel is at 1.488 Angstrom. As a result, nickel absorbs Cu Kb radiation much more strongly than it absorbs Cu Ka radiation. A Ni foil filter is often used to attenuate Cu Kb radiation, and is included in our tube housing.  You will still see double peaks due to Ka1 and Ka2   at least at large scattering angles.

http://xrd-cmmp.blogspot.tw/2011 ... ffect-of-steps.html
when running continuous scans, the step size needs to be chosen according to the peak FWHM for effective peak position determination-- but keep in mind that step size impacts net intensity.
5楼2013-07-28 15:07:54
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