July 2015 - Ifeffit - millenia.cars.aps.anl.gov

Linear Combination Fitting problem
by Iuliia Mikulska 13 Sep '15

13 Sep '15

Hello, I'm using Demeter 0.9.21 on Windows 7 (32 bit). I encountering a few problems with Athena. So I wonder if it can be solved in future releases. 1. The names of my spectra are quite long (around 40 characters). The first problem is when I try to import data from Athena project file: appears "Import from Athena project file" window. In this window I can see the name of the spectra only partially and this window can not be resized. So my first question is if the "Import from Athena project file" window can be done resizable? 2. I'm using Athena to perform Linear Combination Fits of my spectra. As I said, the names of my spectra are quite long, so to see the full name in the Athena I need to resize the window. The resizing works fine, but if I change the "Main Window" to "Linear Combination Fitting" then the window of the program resizes back to the standard size and I need again to resize it to see the full name of the spectra. It happens each time when I'm using "Data menu" to access different data processing features. 3. When I performing Linear Combination fits, the results of the fits can not be saved into project. This option was perfectly working in old Athena. Here are steps how to reproduce this problem: 1. I chose the spectrum which I would like to fit with standards. 2. Then I chose a few Standards. 3. Then I press button "Fit this group". 4. Now in "Fit results" tab you can see the results of the fit. Up to this step everything works fine. Now I need to fit next spectra. So I choose next spectra in group list and then I repeat 2-4 aforementioned steps. I again get the proper fit. The problem comes when I would like to check the fit which I did for previous spectrum. So in group list I simply choose the previous spectrum, but "Fit results" tab is empty. "Standards" tab shows the standards used for fit of second spectrum. So you can access the results of the Linear Combination Fitting only immediately after fitting. As soon as you move to another spectrum, fit results for previous spectrum are lost. If you need more information, please let me know. Best regards, Iuliia Mikulska

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Demeter installation on Debian
by Isabelle Kieffer 14 Aug '15

14 Aug '15

Dear all, I am trying to install demeter on my debian 7 computer and I cannot reach the end of the compilation. I followed the instructions from the https://gist.github.com/3959252 page. First, the "perl ./Build.PL" still requires "PDL::stats" even after several "./Build installdeps". I have the following message: """""""""""""""""""""""""""""""""""""""""""""""""""" letard@pcikieffer:~/demeter$ perl ./Build.PL Checking prerequisites... requires: ! PDL::Stats is not installed ERRORS/WARNINGS FOUND IN PREREQUISITES. You may wish to install the versions of the modules indicated above before proceeding with this installation Run 'Build installdeps' to install missing prerequisites. Created MYMETA.yml and MYMETA.json Creating new 'Build' script for 'Demeter' version 'v0.9.21' If all dependencies are met, build and install Demeter by doing: ./Build ./Build test ./Build install # (or sudo ./Build install) If you are reinstalling Demeter after updating your operating system (or updating perl), you may find that none of the programs will run successfully. You may need to do: ./Build touch_wrapper ./Build test ./Build install # (or sudo ./Build install) """""""""""""""""""""""""""""""""""""""""""""""""""" Then, I decided to continue despite this missing prerequisite and the "./Build" ends with the folowing error: ##### Building Artemis User's Guide Building Athena User's Guide ! plugin error - Can't locate Clone.pm in @INC (@INC contains: /home/letard/perl5/lib/perl5/x86_64-linux-gnu-thread-multi /home/letard/perl5/lib/perl5/x86_64-linux-gnu-thread-multi /home/letard/perl5/lib/perl5 /etc/perl /usr/local/lib/perl/5.14.2 /usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl .) at /usr/local/share/perl/5.14.2/PPI/Element.pm line 25. BEGIN failed--compilation aborted at /usr/local/share/perl/5.14.2/PPI/Element.pm line 25. Compilation failed in require at /usr/local/share/perl/5.14.2/PPI.pm line 19. BEGIN failed--compilation aborted at /usr/local/share/perl/5.14.2/PPI.pm line 19. Compilation failed in require at Template/Plugin/PerlSyntaxHtml.pm line 5. BEGIN failed--compilation aborted at Template/Plugin/PerlSyntaxHtml.pm line 5. Compilation failed in require at /home/letard/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Template/Plugins.pm line 206. ##### So I don't know if something is missing on my computer or if one of you encountered similar problems. If one of you has some ideas to help me going further, I would really appreciate! Thanks a lot in advance. Isabelle -- Isabelle KIEFFER, Ingénieur de Recherche CNRS, Ligne CRG FAME (BM30B) ESRF - The European Synchrotron CS 40220 - 38043 Grenoble Cedex 9 - France Tel : +33 (0)4 76 88 25 47 - Bureau : LOB 2-50

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Vanadium-Chromium Prussian Blue Analog XANES fitting
by Adora Graham 31 Jul '15

31 Jul '15

Hello, First of all, I am still very new to XAS analysis, so please excuse any misunderstandings I may have. I have a series of compounds nominally consisting of KxVx[Cr(CN)6] Prussian blue analogs (where x is ~1) with Cr(III) and presumably V(II) present in the system. From other evidence, the V(II) may be oxidizing to V(III). I have XAS data collected at the V and Cr K-edges from APS and have been struggling through trying to analyze my data using Athena. I am trying to get two things out of this data: First, I would like to get the oxidation state of the Vanadium sites. If they are not V(II), to get the ratio of V(II) to V(III) present, if possible. I have been trying to follow a similar analysis to Wong (Phys. Rev. B, 1984, 30, 10, 5596-5610). However, I seem to be running into the issue of finding standards with a similar ligand set to my sample. I have XAS data for the following standards: VO, V2O3, V2O4, V2O5, V(acac)3, VO(acac), VOSO4, and VSO4. I start with VSO4 as my initial vanadium source, so that could be useful for a comparison. Our initial idea was to use the vanadium oxides to give a standard curve to then extrapolate the oxidation state of my compound, but using this gives me an oxidation state of ~4.2 which seems unreasonable for my system. I am kind of lost otherwise as to what else I could do with this. Second, I would like to get the ratio of V to Cr. I was told I could compare the un-normalized K-edge heights of the vanadium to that of the chromium to get this ratio. This doesn't seem right, as I would think that there should be some relative intensity factor involved. Also, this gives me a fairly unreasonable value of 4:1, since XPS measurements give me values of around 1:1. Can you point me in the right direction for these issues? I've also attached the project files for one of my samples. Thanks, Adora

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Re: [Ifeffit] HELP: failed to install gcc49 on mac (v10.6.8)
by Fowler, Joseph W. 30 Jul '15

30 Jul '15

Dear Ie-Rang, I’m the demeter maintainer on MacPorts, but I admit I am anything but a MacPorts guru. I notice that the error you showed is a failure to install gcc49. I don’t know if that new GCC is compatible with your old version of OS X, but that’s an issue that’s beyond my expertise. You might edit your variants file (it’s /opt/local/etc/macports/variants.conf on my installation) to insist on an earlier version by adding a line containing, e.g., “+gcc47” or whatever is your installed and preferred version of GCC. In fact, the port demeter does not depend (directly) on gcc, which you can see by issuing the command > port echo depof:demeter > port echo depof:demeter-devel So it looks to me like you have several steps to get ready for installing demeter. I admit that I recently discovered—but have not fixed—a flaw in the demeter port description file. The code depends on ports p5.16-file-which and p5.16-math-round, but these are not made explicit. I need to figure out how to add these to the explicit dependency list. I’m just back from vacation and a conference, so I have no excuses now. If you get far enough that you can install *but not run* demeter’s executables, then a workaround for this is > sudo port install p5.16-file-which p5.16-math-round And for MacPorts users in general: I understand that the project as a whole is in the process of trying to move to Perl 5.22 instead of 5.16. I’ll be updating the port file to reflect that change, too. Joe Fowler NIST Boulder Laboratories On Jul 29, 2015, at 4:01 PM, ifeffit-request(a)millenia.cars.aps.anl.gov<mailto:ifeffit-request@millenia.cars.aps.anl.gov> wrote: Send Ifeffit mailing list submissions to ifeffit(a)millenia.cars.aps.anl.gov<mailto:ifeffit@millenia.cars.aps.anl.gov> To subscribe or unsubscribe via the World Wide Web, visit http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit or, via email, send a message with subject or body 'help' to ifeffit-request(a)millenia.cars.aps.anl.gov You can reach the person managing the list at ifeffit-owner(a)millenia.cars.aps.anl.gov When replying, please edit your Subject line so it is more specific than "Re: Contents of Ifeffit digest..." Today's Topics: 1. HELP: failed to install gcc49 on mac (v10.6.8) (Ie-Rang Jeon) 2. Re: HELP: failed to install gcc49 on mac (v10.6.8) (Bruce Ravel) 3. Error in Running XANES on FEFF8.4 for Cobalt based cluster (Ganesh Subramanian) From: Ie-Rang Jeon <jeon(a)northwestern.edu> Subject: [Ifeffit] HELP: failed to install gcc49 on mac (v10.6.8) Date: July 29, 2015 at 1:11:08 PM MDT To: "ifeffit(a)millenia.cars.aps.anl.gov" <ifeffit(a)millenia.cars.aps.anl.gov> Reply-To: XAFS Analysis using Ifeffit <ifeffit(a)millenia.cars.aps.anl.gov> Hello, I'm trying to install MacPorts package on my mac (v.10.6.8), and I can't do this. Below are error messages that I got. Could you please help me to figure out what the problem is? Thank you. Ie-Rang ----------------------------------- ---> Building gcc49 Error: org.macports.build for port gcc49 returned: command execution failed Error: Failed to install gcc49 Please see the log file for port gcc49 for details: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc49/gcc49/main.log Error: The following dependencies were not installed: . . . Error: Processing of port demeter-devel failed From: Bruce Ravel <bravel(a)bnl.gov> Subject: Re: [Ifeffit] HELP: failed to install gcc49 on mac (v10.6.8) Date: July 29, 2015 at 1:21:06 PM MDT To: XAFS Analysis using Ifeffit <ifeffit(a)millenia.cars.aps.anl.gov> Reply-To: XAFS Analysis using Ifeffit <ifeffit(a)millenia.cars.aps.anl.gov> On 07/29/2015 03:11 PM, Ie-Rang Jeon wrote: Hello, I'm trying to install MacPorts package on my mac (v.10.6.8), and I can't do this. Below are error messages that I got. Could you please help me to figure out what the problem is? Thank you. Ie-Rang Perhaps there's anything useful in that log file? B ----------------------------------- ---> Building gcc49 Error: org.macports.build for port gcc49 returned: command execution failed Error: Failed to install gcc49 Please see the log file for port gcc49 for details: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc49/gcc49/main.log Error: The following dependencies were not installed: . . . Error: Processing of port demeter-devel failed _______________________________________________ Ifeffit mailing list Ifeffit(a)millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit -- Bruce Ravel ------------------------------------ bravel(a)bnl.gov National Institute of Standards and Technology Synchrotron Science Group at NSLS-II Building 535A Upton NY, 11973 Homepage: http://bruceravel.github.io/home/ Software: https://github.com/bruceravel Demeter: http://bruceravel.github.io/demeter/

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Error in Running XANES on FEFF8.4 for Cobalt based cluster
by Ganesh Subramanian 30 Jul '15

30 Jul '15

Dear all, I was trying to simulate XANES using FEFF8.4 at Cobalt K edge. This is for a cluster and not a crystal. I encountered two problems. 1. *Using the FOLP card*: The actual cluster size is about 180 atoms extending upto 18 A in radial distance from the central cobalt atom. But there are quite a few instances of Hydrogen atoms that are too close. I tried the FOLP with the recommendation for Hydrogen of 0.8, I seem to get a syntax type error, that i cant figure out. I checked the crystal structure and the smallest hydrogen bond distance is 0.89 A. (I have attached the corresponding input and log file with suffix 'full cluster') 2. *SCF for small cluster*: Since the problem with the hydrogen distances persisted, I decided to run the calculation for a smaller cluster (about 50 atoms). I used the conditions as prescribed for small clusters - SCF 5.0 1, FMS 5.0 1, RPATH -1. Those hydrogens that were too close (within this smaller cluster, there were about 3 of them, and none in the first or second shell of co-ordination) were removed manually. Now, I did not have the error on distances, did not require the FOLP card to be manually altered, but the log1 file seems to suggest that the SCF is not calculated. I cant figure why that is the case. (I have attached the corresponding input and log file with suffix 'small cluster') Sorry for the long email, and thank you for any suggestions. Ganesh

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HELP: failed to install gcc49 on mac (v10.6.8)
by Ie-Rang Jeon 29 Jul '15

29 Jul '15

Hello, I'm trying to install MacPorts package on my mac (v.10.6.8), and I can't do this. Below are error messages that I got. Could you please help me to figure out what the problem is? Thank you. Ie-Rang ----------------------------------- ---> Building gcc49 Error: org.macports.build for port gcc49 returned: command execution failed Error: Failed to install gcc49 Please see the log file for port gcc49 for details: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc49/gcc49/main.log Error: The following dependencies were not installed: . . . Error: Processing of port demeter-devel failed

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Setting ranges in peak fitting
by Kenneth Latham 28 Jul '15

28 Jul '15

Hi Bruce, To clarify this further, I am peak fitting a number of peaks under the carbon edge. For example, I know from the literature that the 1s-p transition for the C=C should be located between 284.5 to 285.5 eV, so I would fit a peak at about 285 eV to start with. I would then move on to fitting additional peaks based on their literature values with what I know about the material/where obvious peaks are in the NEXAFS. The problem now comes when I tell Athena to fit, it will start to move the peaks all over the place to obtain the best fit, typically placing them in locations where functionalities don't appear under the NEXAFS. In other words, it would move peaks away from where I would expect them to be based on the literature. This can be partially stopped by fixing all but one peak, fitting it and then and applying this procedure to every peak multiple times. What I was wondering is if Athena has the ability to set a range that each peak is allowed to move, i.e., the C=C center would be restricted to values between 284.5-285.5 eV. Hence I could set up the ranges and fit quickly based on those. Cheers, Ken Latham ________________________________________ From: ifeffit-bounces(a)millenia.cars.aps.anl.gov <ifeffit-bounces(a)millenia.cars.aps.anl.gov> on behalf of ifeffit-request(a)millenia.cars.aps.anl.gov <ifeffit-request(a)millenia.cars.aps.anl.gov> Sent: Saturday, 25 July 2015 3:00 AM To: ifeffit(a)millenia.cars.aps.anl.gov Subject: Ifeffit Digest, Vol 149, Issue 23 Send Ifeffit mailing list submissions to ifeffit(a)millenia.cars.aps.anl.gov To subscribe or unsubscribe via the World Wide Web, visit http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit or, via email, send a message with subject or body 'help' to ifeffit-request(a)millenia.cars.aps.anl.gov You can reach the person managing the list at ifeffit-owner(a)millenia.cars.aps.anl.gov When replying, please edit your Subject line so it is more specific than "Re: Contents of Ifeffit digest..." Today's Topics: 1. Setting ranges in peak fitting Athena (Kenneth Latham) 2. Re: Setting ranges in peak fitting Athena (Ravel, Bruce) 3. Re: Setting ranges in peak fitting Athena (Matt Newville) ---------------------------------------------------------------------- Message: 1 Date: Fri, 24 Jul 2015 00:14:18 +0000 From: Kenneth Latham <Kenneth.Latham(a)uon.edu.au> To: "ifeffit(a)millenia.cars.aps.anl.gov" <ifeffit(a)millenia.cars.aps.anl.gov> Subject: [Ifeffit] Setting ranges in peak fitting Athena Message-ID: <CY1PR02MB1416E3DBC230406B078F9A07AA810(a)CY1PR02MB1416.namprd02.prod.outlook.com> Content-Type: text/plain; charset="iso-8859-1" Hi Bruce, Is it possible to set a range of values that the the center (or any other values) can be between for line shapes when peak fitting in Athena? Similar to what you can do in CasaXPS. If not, do you know of a program that can handle NEXAFS peak fitting and has that feature? Cheers, Ken ------------------------------ Message: 2 Date: Fri, 24 Jul 2015 13:14:03 +0000 From: "Ravel, Bruce" <bravel(a)bnl.gov> To: XAFS Analysis using Ifeffit <ifeffit(a)millenia.cars.aps.anl.gov> Subject: Re: [Ifeffit] Setting ranges in peak fitting Athena Message-ID: <xp7hq5h11j0ygmcc2btiht0f.1437743641853(a)email.android.com> Content-Type: text/plain; charset="us-ascii" Hi Ken, I'm sorry, but I don't quite understand your question. And I have no idea what casaXPS is, so that reference doesn't help me. Are you asking whether you can put gaps in the fit range? B On July 23, 2015, at 8:16 PM, Kenneth Latham <Kenneth.Latham(a)uon.edu.au> wrote: Hi Bruce, Is it possible to set a range of values that the the center (or any other values) can be between for line shapes when peak fitting in Athena? Similar to what you can do in CasaXPS. If not, do you know of a program that can handle NEXAFS peak fitting and has that feature? Cheers, Ken _______________________________________________ Ifeffit mailing list Ifeffit(a)millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit

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Two postdoctoral positions
by Anatoly I Frenkel 27 Jul '15

27 Jul '15

Dear subscribers, Please pass along this information to anyone who may be interested in this opportunities. Physics Department of Yeshiva University in New York City has two openings for postdoctoral research associate positions, beginning in September 2015. The first position is for the project: "Collaborative research: Toolkit to characterize and design bi-functional nanoparticle catalysts." The postdoc will be stationed at Brookhaven National Laboratory and use advanced facilities of NSLS-II and other synchrotrons for X-ray absorption spectroscopy measurements. Required qualifications: Ph.D. in physics, chemistry or materials science, expert knowledge of XAS methods, including analysis and modeling of nanoparticles, and experience with in situ characterization methods by XAS and other techniques. The second position is for the project "Multidisciplinary research for the advancement of filtration materials: Uptake, decomposition, and catalysis for Agent-POM/MOF Chemistry". The postdoc will be stationed at Brookhaven National Laboratory and use advanced facilities of NSLS-II and other synchrotrons for high energy XRD-PDF characterization of novel POM/MOF materials in reaction conditions. Required qualifications: Ph.D. in chemistry, chemical engineering or materials science, expert knowledge of XRD-PDF technique and data analysis, experience with analysis of MOFs, experience with in situ and/or operando methods of synchrotron characterization. The research will be performed under the direction of Prof. Anatoly Frenkel. Applicants should forward cover letter with contact information of three references and CV to anatoly.frenkel(a)yu.edu. Yeshiva University is an Equal Opportunity Employer. Anatoly Frenkel, Ph.D., Professor and Chair, Department of Physics, Yeshiva University 245 Lexington Avenue, New York, NY 10016 http://www.yu.edu/faculty/afrenkel Spokesperson, Synchrotron Catalysis Consortium http://www.yu.edu/scc Office: (212) 340-7827, Lab: (631) 344-3013, Email: anatoly.frenkel(a)yu.edu

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Setting ranges in peak fitting Athena
by Kenneth Latham 24 Jul '15

24 Jul '15

Hi Bruce, Is it possible to set a range of values that the the center (or any other values) can be between for line shapes when peak fitting in Athena? Similar to what you can do in CasaXPS. If not, do you know of a program that can handle NEXAFS peak fitting and has that feature? Cheers, Ken

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Plotting chi(k) linear combination fit in energy
by Ellen Daugherty 21 Jul '15

21 Jul '15

Hello, I was unable to find an example of this question in the archive, but please let me know if it has already been addressed. I would like to plot the results of linear combination fits performed in chi(k) in energy space to compare them to XANES fits. When I try to plot the saved fit in energy, I get a message saying: "chi data cannot be plotted in energy." Is there any way to do this other than to use Excel to scale the weights of the standards? This would be exhausting to perform for combinatorial fits. I am using Athena in Demeter 0.9.20 on Windows 7. I have attached a sample and a few standards for aid in addressing the issue. Thank you! Ellen -- Ph.D. Candidate Research Assistant, Borch Lab <http://borch.agsci.colostate.edu/> Department of Chemistry Colorado State University http://borch.agsci.colostate.edu/group-members/ellen-daugherty/

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