Topas can model them quite well. The functionality was introduced in version 5.
On Mon, 4 Sep 2023, 00:54 Kurt Leinenweber, <ku...@asu.edu> wrote: > 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/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > >
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 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/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
