Buy article online - an online subscription or single-article purchase is required to access this article.
Download citation
Download citation
link to html
A method is described for determining the structure factor F(Q) at a scattering vector Q along a crystal truncation rod (CTR) by measuring the total power diffracted with the crystal fixed. When a detector collects the entire diffracted beam, PCTR/ P0 = pσT[λ|F(Q)|/a0 sin θ sin χ]2, where P0 and PCTR are the powers of the incident and diffracted beams, p is a polarization factor, σT is the Thompson cross section, λ is the X-ray wavelength, a0 is the area of a two-dimensional unit cell and θ and χ are diffractometer angles. No terms due to instrumental resolution are required for measurement of the structure factor. Simple expressions are derived relating structure factors to the integrated intensity of rocking curves employing a receiving slit wide enough to accept the diffracted beam in one direction only. Measurements employing a narrow slit are useful in measuring CTR intensity at grazing incidence (i.e. small perpendicular momentum transfer) or for specular reflection (i.e. small parallel momentum transfer). For the more general case (large perpendicular and parallel momentum transfer), accurate measurements are more easily made when the detector collects the entire diffracted beam

Subscribe to Journal of Applied Crystallography

The full text of this article is available to subscribers to the journal.

If you have already registered and are using a computer listed in your registration details, please email support@iucr.org for assistance.

Buy online

You may purchase this article in PDF and/or HTML formats. For purchasers in the European Community who do not have a VAT number, VAT will be added at the local rate. Payments to the IUCr are handled by WorldPay, who will accept payment by credit card in several currencies. To purchase the article, please complete the form below (fields marked * are required), and then click on `Continue'.
E-mail address* 
Repeat e-mail address* 
(for error checking) 

Format*   PDF (US $40)
In order for VAT to be shown for your country javascript needs to be enabled.

VAT number 
(non-UK EC countries only) 
Country* 
 

Terms and conditions of use
Contact us

Follow J. Appl. Cryst.
Sign up for e-alerts
Follow J. Appl. Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds