Category Archives: Software

Intensity in density

A few weeks ago, a dataset landed on my desk from a very dense system: scattering from dry, packed SiO2 nanoparticle powder. Dense systems add a degree of complexity to small-angle scattering, so it was interesting to try (play) and find a solution to this.

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12 corrections in a row

Just a couple of housekeeping notes: I’m giving talks in Europe in a month at the following locations: Unité Matériaux et Transformations (UMET), Lille on May 16, hosted by Grégory Stoclet, Birmingham University, Birmingham on the 20th of May, hosted by Zoe Schnepp, Nottingham University, Nottingham, on the 23rd of May, hosted by Philip Moriarty, […]

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New Live Fourier Transform code

More about this next week, but Ingo has kindly provided a Windows executable version of one of the latest development builds of the Monte Carlo code (with GUI). While I have not yet had the chance to test it (being on a mac myself), please go ahead and get it from here! Some of you may […]

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Once more: writing data correction software

With the Bonse Hart instrument out of commission still (yet another failure in the X-ray generator target assembly), I decided it may be time to have another look at the data correction procedures. Some of you may remember that I wrote a comprehensive review of all conceivable corrections in a recent open-access review paper, and […]

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Monte Carlo; now getting a GUI!

There have been many developments on the Monte Carlo program that I have been rather silent about. For those that forgot: this is the method that allows the determination of a particle size distribution (or rather a scatterer size distribution) from a small-angle scattering pattern if you select a shape. It is described in detail […]

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Programming your own data reduction? Check out fabIO and pyFAI

Reading in the detector data, and programming methods for that, is one of the more tedious tasks of any data reduction program. Those of you who write their own data correction programs know this all too well. Many detector systems store their data a little bit differently than the others, despite the availability of decent […]

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Monte-Carlo: now in 2D!

Small-angle scattering analysis has never been easy for those working with oriented nanostructures (e.g. fibres, processed polymers, rolled metal alloys), whose structure may lead to anisotropic small-angle scattering. Upon the collection of such 2D scattering patterns, one can integrate thin pie-slices of the data to obtain 1D curves and analyse them in the same way […]

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Free Code! McSAS: A Monte-Carlo way for retrieving particle size distributions.

Good news for those of you on the hunt for a way to get polydispersity (size distribution) information from your scattering patterns. Two pieces of good news, to be precise! Firstly, the paper that describes my implementation of the method that does exactly this has just been accepted earlier this month for publication in J. […]

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A new year, seven publications to write and a short movie

Dear scatterers, First of all, allow me to wish you a very happy 2013, wishing you much comfort, many good meetings and world peace. With that out of the way, this year might be different from others on this weblog, as I have to spend oodles of time on my “favourite” activity: trying to publish. […]

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Monte-Carlo fitting of isotropic scattering and observability on arXiv

We have now entered the final two weeks before the Scattering-Bonanza that is SAS2012… Are you feeling the pressure yet? With many good talks lined up for that conference, and many good people attending, I am honestly quite excited! I too will be giving my small contribution in the form of two talks, one at […]

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