@@PhysicalConcepts طبعا جهد سيادتك مشكور دايما اخى الدكتور ولكن لما بتشرح بالصوت بنستفيد أكتر وبتفتح أذهانا لأمور أفضل من الفديو دة غير التفاعل وعدم الملل من صمت الفديو ، شكرا جزيلا لك
Nobody smooths xrd patterns! (By the way: pattern, not spectrum). To my understanding, smoothing is good to remove noise from broad curves. Noise must be much smaller amplitude and much narrower than the features of the curve. But these conditions are NOT the case of XRD patterns. In XRD you have very narrow, sharp peaks, there are often very few datapoints per each XRD peak.. Smoothing is done by averaging datapoints with the adjacent points (15 in your case). In doing so you will alter both the peak shape and the intensity (and possibly the maxima position) of your diffraction peaks. Consequently, you alter or you lose the structural information contained in your experimental pattern. By smoothing you will also "delete" any weak bragg peaks, e.g. those at high angle. If you want to see a nice pattern, do a Pawley or LeBail fitting of your noisy data. In many cases, less noisy patterns can be acquired, by adjusting the measurement conditions.
Thank you very much, the video is only tutorial, for those who wanted to remove the noise on the XRD curve, especially if the diffractions were not visible, taking into account the notes you wrote in your comment.
@@PhysicalConcepts my point is that people MUST NOT remove noise from XRD patterns, because then this procedure unavoidably alters the XRD data too much. Analysing wrong data will cause mistakes in the interpretation. Feel free to write me privately for more discussion ;-)
جزاكم الله كل الخير يارب ، محتاجين شرح صوت لو تكرمت يا دكتورنا هيكون أفضل
بحسب الموضوع، احيانا الموضوع لا يحتاج الى شرح بالصوت ، الصورة بتكون كافية
@@PhysicalConcepts طبعا جهد سيادتك مشكور دايما اخى الدكتور ولكن لما بتشرح بالصوت بنستفيد أكتر وبتفتح أذهانا لأمور أفضل من الفديو دة غير التفاعل وعدم الملل من صمت الفديو ، شكرا جزيلا لك
سعيد بمتابعتكم
@@PhysicalConcepts دائما ما نسعد بجهدكم المشكور يا دكتورنا وانا متابع للقناة ولله الحمد ، شكرا لك وبارك الله لك يارب
طبعا الشرح ب الصوت افضل
وعاوزين نعرف يعني smooth اصل لعينة وايه الغرض منه يا دكتور
شكرآ جزيلا
لعمل إزالة لل noses
Nobody smooths xrd patterns! (By the way: pattern, not spectrum).
To my understanding, smoothing is good to remove noise from broad curves. Noise must be much smaller amplitude and much narrower than the features of the curve. But these conditions are NOT the case of XRD patterns.
In XRD you have very narrow, sharp peaks, there are often very few datapoints per each XRD peak.. Smoothing is done by averaging datapoints with the adjacent points (15 in your case). In doing so you will alter both the peak shape and the intensity (and possibly the maxima position) of your diffraction peaks. Consequently, you alter or you lose the structural information contained in your experimental pattern. By smoothing you will also "delete" any weak bragg peaks, e.g. those at high angle.
If you want to see a nice pattern, do a Pawley or LeBail fitting of your noisy data. In many cases, less noisy patterns can be acquired, by adjusting the measurement conditions.
Thank you very much, the video is only tutorial, for those who wanted to remove the noise on the XRD curve, especially if the diffractions were not visible, taking into account the notes you wrote in your comment.
@@PhysicalConcepts my point is that people MUST NOT remove noise from XRD patterns, because then this procedure unavoidably alters the XRD data too much. Analysing wrong data will cause mistakes in the interpretation.
Feel free to write me privately for more discussion ;-)