Blog posts – Page 30 – Looking At Nothing

Internal detection surface diffraction effects leading to a reduction of detected counts (black lines on the real image, over which about 10% fewer counts were detected than the surrounding pixels). Image on the right shows the calculated pattern for the chosen energy. Energy used: 8285 eV, Reflection indices detected: (117). Image courtesy of Christian Gollwitzer at PTB.

Trouble in Paradise? Internal diffraction in PILATUS-like detectors

2014-02-10 Brian 0

A great many of the data correction issues in small-angle scattering can be resolved by trading a kidney for a PILATUS detector [1] (or similar […]

Monte Carlo Demonstration (video)

2014-02-03 Brian 0

Over the last year or so, I have spent quite some words on the Monte Carlo method for extracting (particle) size distributions from scattering data. […]

A screenshot from the Live Fourier Transform program

New Live Fourier Transform code

2014-01-27 Brian 0

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 […]

A sample (blue) and background (green) measured on the slightly optimised Bonse Hart system. Scale is "symlog", meaning it is linear between 10e-3 and -10e-3 (hence the strange bump).

Tweaking the Ultra-SAXS machine

2014-01-20 Brian 2

It has been a very quiet four months (since this post) on the Bonse Hart front, as the generator was out of order (yes, again, […]

TEM and SAXS on alloys, finally published!

2014-01-13 Brian 0

It’s my pleasure to inform you that after almost 1.5 years of work, Julian Rosalie and I finally managed to get this paper out (open […]

Applied metrology example from literature, and new new-year’s SAXS resolutions

2014-01-06 Brian 3

Welcome to the new year, may it be even more fun than the last! For today, I have two items on the menu: a paper […]

Thank you for a wonderful 2013!

2013-12-16 Brian 2

It seems like this year has flown by at an amazing speed, yet quite a few things have come to pass in this year.

Once more: writing data correction software

2013-12-02 Brian 1

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 […]

Previous fit, but instead of spheres, we are fitting using long cylinders.

How to fit a scattering pattern part 2: Some simple fits

2013-11-18 Brian 2

Note: Part one of this three- or four-part series can be found here. Additionally, my topical review paper on SAXS data collection and correction which also […]

Monte Carlo; now getting a GUI!

2013-11-05 Brian 0

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 […]