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×î½üÍâµ¼¸øÎÒÉóÔÄÁËһƪÎÄÕ ÆÀÓïÊÇÕâÑùдµÄ£º Interpretation of SAED. If you go to the literature you will find that the characteristic distances (D) obtained from the radius (R) of concentric rings is given by D = constant/R. The constant must have dimensions (length to the square) and it is calculated as the product of the wavelength of the electrons (depends on the energy of the electron beam) and the distance from the sample to the place where the image is formed. I suggest to re-calculate this distance as well as the distances associated to all the observed rings. ÎÒ²»Ã÷°×Õâ¸ö¹«Ê½ÔõÃ´ÍÆÀ´µÄ ¹ØÓÚD=constant/R. Õæ²»ÖªµÀÔõôÀ´µÄ£¬Çë¸÷λ´óÏÀÖ¸½ÌÖ¸½Ì Óнð±Ò½±Àø лл [ Last edited by nash603 on 2011-3-23 at 21:27 ] |
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