Forgot to say that the problem is absent in diffractometers with monochromator. I observed it first in a bragg-brentano diffractometer with accelrys linear position sensitive detector (panalytical) which had no monochromator
El dom, 3 sep. 2023 20:47, miguel gregorkiewitz <gregorm...@gmail.com> escribió: > Kbeta can always be added, but for the absorption edge there seems to be > no remedy, and as seen in the graph, it is far more important > > > El dom, 3 sep. 2023 18:54, Kurt Leinenweber <ku...@asu.edu> escribió: > >> Hi, Are these things modeled in Rietveld programs, by chance? It seems >> like a lot of baggage to put in a refinement but if it makes the results >> better… >> >> >> >> - Kurt >> >> >> >> *From:* rietveld_l-requ...@ill.fr <rietveld_l-requ...@ill.fr> *On Behalf >> Of *Thomas Gegan >> *Sent:* Sunday, September 3, 2023 9:16 AM >> *To:* Bish, David L <b...@indiana.edu>; Shay Tirosh <stiro...@gmail.com>; >> Fernando Igoa <fer.igoa.1...@gmail.com> >> *Cc:* Rietveld List (rietveld_l@ill.fr) <rietveld_l@ill.fr> >> *Subject:* RE: [EXT] Re: [External] Re: Step-like basline >> >> >> >> I agree with a Ni absorption edge, possibly with a Kβ peak around 38° 2θ. >> >> >> >> *Tom Gegan* >> Chemist III >> >> >> >> Phone: +1 732 205-5111, Email: tom.ge...@basf.com >> Postal Address: BASF Corporation, , 25 Middlesex Essex Turnpike, 08830 >> Iselin, United States >> >> >> >> *From:* rietveld_l-requ...@ill.fr <rietveld_l-requ...@ill.fr> *On Behalf >> Of *Bish, David L >> *Sent:* Sunday, September 3, 2023 7:08 AM >> *To:* Shay Tirosh <stiro...@gmail.com>; Fernando Igoa < >> fer.igoa.1...@gmail.com> >> *Cc:* Rietveld List (rietveld_l@ill.fr) <rietveld_l@ill.fr> >> *Subject:* [EXT] Re: [External] Re: Step-like basline >> >> >> >> Some people who received this message don't often get email from >> b...@indiana.edu. Learn why this is important >> <https://urldefense.com/v3/__https:/aka.ms/LearnAboutSenderIdentification__;!!IKRxdwAv5BmarQ!fFhSHn4S5iEzkW-O9lvWG-OzoqK_2SKhRniGa71nxuOL3GcxiyD83i2mnNN0Z48HPkn4zjKqH-aqqA$> >> >> Hello Shay, >> >> I think it is probably related to "tube tails". You can read about this >> in the literature (e.g., on the BGMN web site) and you can model it in some >> Rietveld software such as Topas. You don't normally notice this but it >> becomes apparent with higher-intensity peaks. >> >> >> >> Regards, >> >> Dave >> ------------------------------ >> >> *From:* rietveld_l-requ...@ill.fr <rietveld_l-requ...@ill.fr> on behalf >> of Fernando Igoa <fer.igoa.1...@gmail.com> >> *Sent:* Sunday, September 3, 2023 3:06 AM >> *To:* Shay Tirosh <stiro...@gmail.com> >> *Cc:* Rietveld List (rietveld_l@ill.fr) <rietveld_l@ill.fr> >> *Subject:* [External] Re: Step-like basline >> >> >> >> This message was sent from a non-IU address. Please exercise caution when >> clicking links or opening attachments from external sources. >> >> >> >> Hey Shay, >> >> >> >> Are you using a motorized slit during the measurement? These may open up >> abruptly to compensate for the angular dependence of the footprint and thus >> generate an abrupt increase in the intensity. >> >> >> >> Hope it helps :) >> >> >> >> On Sun, Sep 3, 2023, 8:50 AM Shay Tirosh <stiro...@gmail.com> wrote: >> >> Dear Rietvelders >> >> I am attaching a zoom-in on a diffraction profile. >> >> My question is what is the origin of the step-like profile next to a very >> large reflection peak? >> >> Is it a sample preparation problem? >> >> Is it part of the baseline? >> >> Thanks >> >> Shay >> >> -- >> >> >> >> >> >> >> >> >> >> >> >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> Please do NOT attach files to the whole list < >> alan.he...@neutronoptics.com> >> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body >> text >> The Rietveld_L list archive is on >> http://www.mail-archive.com/rietveld_l@ill.fr/ >> <https://urldefense.com/v3/__http:/www.mail-archive.com/rietveld_l@ill.fr/__;!!IKRxdwAv5BmarQ!fFhSHn4S5iEzkW-O9lvWG-OzoqK_2SKhRniGa71nxuOL3GcxiyD83i2mnNN0Z48HPkn4zjJTf8rNHg$> >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> Please do NOT attach files to the whole list <alan.he...@neutronoptics.com >> > >> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body >> text >> The Rietveld_L list archive is on >> http://www.mail-archive.com/rietveld_l@ill.fr/ >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >>
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