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addenda and errata
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
Aurore: new software for neutron reflectivity data analysis. Corrigendum
aInstitut Laue–Langevin 71, avenue des Martyrs, 38000, Grenoble, France
*Correspondence e-mail: gerelli@ill.fr
An incorrect statement in the paper by Gerelli [J. Appl. Cryst. (2016), 49, 330–339] is corrected.
Keywords: neutron reflectivity data analysis; computer programs.
An incorrect statement in the paper by Gerelli (2016![[Gerelli, Y. (2016). J. Appl. Cryst. 49, 330-339.]](../../../../../../logos/arrows/j_arr.gif "Gerelli, Y. (2016). J. Appl. Cryst. 49, 330-339.")
) is corrected. On p. 332, §2.1 it is stated that negative reflectivity values are discarded by default in the Aurore software because they are not physical. The statement is incorrect because, although reflectivity is a positive-definite quantity, for the case of background-subtracted data the reflectivity values can fluctuate around zero. This occurs especially if the reflectivity values are very small compared to the background. Ignoring systematically negative values could bias fits under these circumstances.
References
Gerelli, Y. (2016). J. Appl. Cryst. 49, 330–339. Web of Science CrossRef CAS IUCr Journals Google Scholar
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| JOURNAL OF APPLIED CRYSTALLOGRAPHY |
