It can be modeled in Topas
James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr. stop 8370 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523 USA james.cl...@nist.gov<mailto:james.cl...@nist.gov> https://www.nist.gov/people/james-p-cline (301) 975 5793 From: rietveld_l-requ...@ill.fr <rietveld_l-requ...@ill.fr> On Behalf Of Kurt Leinenweber Sent: Sunday, September 3, 2023 12:53 PM To: Thomas Gegan <tom.ge...@basf.com>; 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 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<mailto:rietveld_l-requ...@ill.fr> <rietveld_l-requ...@ill.fr<mailto: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<mailto:b...@indiana.edu>>; Shay Tirosh <stiro...@gmail.com<mailto:stiro...@gmail.com>>; Fernando Igoa <fer.igoa.1...@gmail.com<mailto:fer.igoa.1...@gmail.com>> Cc: Rietveld List (rietveld_l@ill.fr<mailto:rietveld_l@ill.fr>) <rietveld_l@ill.fr<mailto: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<mailto:tom.ge...@basf.com> Postal Address: BASF Corporation, , 25 Middlesex Essex Turnpike, 08830 Iselin, United States [cid:image001.png@01D9DE7A.0C97ED80] From: rietveld_l-requ...@ill.fr<mailto:rietveld_l-requ...@ill.fr> <rietveld_l-requ...@ill.fr<mailto: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<mailto:stiro...@gmail.com>>; Fernando Igoa <fer.igoa.1...@gmail.com<mailto:fer.igoa.1...@gmail.com>> Cc: Rietveld List (rietveld_l@ill.fr<mailto:rietveld_l@ill.fr>) <rietveld_l@ill.fr<mailto: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<mailto: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<mailto:rietveld_l-requ...@ill.fr> <rietveld_l-requ...@ill.fr<mailto:rietveld_l-requ...@ill.fr>> on behalf of Fernando Igoa <fer.igoa.1...@gmail.com<mailto:fer.igoa.1...@gmail.com>> Sent: Sunday, September 3, 2023 3:06 AM To: Shay Tirosh <stiro...@gmail.com<mailto:stiro...@gmail.com>> Cc: Rietveld List (rietveld_l@ill.fr<mailto:rietveld_l@ill.fr>) <rietveld_l@ill.fr<mailto: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<mailto: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? [cid:image002.png@01D9DE7A.0C97ED80] Thanks Shay -- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com<mailto:alan.he...@neutronoptics.com>> Send commands to <lists...@ill.fr<mailto: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$> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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