journal menu
addenda and errata
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
accessA novel small-angle neutron scattering detector geometry. Corrigendum
aEuropean Spallation Source ESS AB, PO Box 176, 22 100 Lund, Sweden, and bInstitut Laue–Langevin, Grenoble, France
*Correspondence e-mail: kalliopi.kanaki@esss.se
Errors in the paper by Kanaki, Jackson, Hall-Wilton, Piscitelli, Kirstein & Andersen [J. Appl. Cryst. (2013), 46, 1031–1037] are corrected.
Keywords: boron-10; boron carbide; detectors; European Spallation Source (ESS); helium-3; geometry; neutrons; optimization based on material properties; small-angle neutron scattering (SANS).
In equation (5) of Kanaki et al. (2013![[Kanaki, K., Jackson, A., Hall-Wilton, R., Piscitelli, F., Kirstein, O. & Andersen, K. H. (2013). J. Appl. Cryst. 46, 1031-1037.]](../../../../../../logos/arrows/j_arr.gif "Kanaki, K., Jackson, A., Hall-Wilton, R., Piscitelli, F., Kirstein, O. & Andersen, K. H. (2013). J. Appl. Cryst. 46, 1031-1037.")
), a factor of 2 is missing from the wavelength contribution to the Q resolution. The correct equation is
![[\delta Q = \left\{ \left[ {{2 \pi \cos (\theta / 2)}\over {\lambda}} \delta \theta \right]^2 + \left[{{4 \pi \sin (\theta/2)}\over{\lambda^2}}\delta \lambda \right]^2 \right\}^{1/2}. \eqno(1)]](teximages/he9597fd1.gif)
Figs. 12 and 13 of Kanaki et al. (2013) are updated as Figs. 1 and 2 of the current article to reflect the correction.
![[Figure 1]](he9597fig1thm.gif) | Figure 1 Q resolution for a 10 m-long and 0.5 m-wide tube detector, as a function of distance from the sample. |
![[Figure 2]](he9597fig2thm.gif) | Figure 2 Normalized Q resolution for a 10 m-long and 0.5 m-wide tube detector, as a function of distance from the sample. |
In equation (6) of Kanaki et al. (2013), the brackets are missing a square root. The correct version is
![[\delta\lambda = 3956\left( {{\delta t^2}\over{L^2}} + {{t^2 \delta L^2}\over{L^4}}\right)^{1/2}. \eqno(2)]](teximages/he9597fd2.gif)
References
Kanaki, K., Jackson, A., Hall-Wilton, R., Piscitelli, F., Kirstein, O. & Andersen, K. H. (2013). J. Appl. Cryst. 46, 1031–1037. Web of Science CrossRef CAS IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
| JOURNAL OF APPLIED CRYSTALLOGRAPHY |
