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addenda and errata\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 44| Part 5| October 2011| Page 1137
https://doi.org/10.1107/S0021889811035631

Supercritical carbon dioxide behaviour in porous silica aerogel. Erratum

CROSSMARK_Color_square_no_text.svg
Salvino Ciccariello,a* Yuri B. Melnichenkob and Lilin Heb

aUniversitá di Padova, Dipartimento di Fisica G. Galilei, Via Marzolo 8, I-35131 Padova, Italy, and bNeutron Scattering Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, USA
*Correspondence e-mail: ciccariello@pd.infn.it

(Received 23 August 2011; accepted 23 August 2011; online 8 September 2011)

Errors in the paper by Ciccariello, Melnichenko & He [J. Appl. Cryst. (2011), 44, 43–51] are corrected.

Similar articles

A misprint is present in equations (13)–(18) of Ciccariello et al. (2011[Ciccariello, S., Menichenko, Y. B. & He, L. (2011). J. Appl. Cryst. 44, 43-51.]). The factor [1/\cal R] is erroneously written in equation (18) instead of being appended to the second addend of the [\hat{\bf n}_{2,\ldots}] definitions. The correct definitions are

[{\cal D}_{\pm} = {1\over {2 n_1}}\left({{{\cal A} \Delta_{\pm}}\over {\pi {\cal S}}}\right)^{1/2},\eqno(1)]

[\hat {\bf n}_{2,{\rm I }} = 1+{{\cal D}_{-}({\cal R}+\Delta_+)}/{\cal R}, \eqno(2)]

[\hat {\bf n}_{2,{\rm II}} = 1-{{\cal D}_{-}({\cal R}+\Delta _+)}/{\cal R}, \eqno(3)]

[\hat {\bf n}_{2,{\rm III}} = 1+{{\cal D}_{+}({\cal R}+\Delta_-)}/{\cal R}, \eqno(4)]

[\hat {\bf n}_{2,{\rm IV}} = 1-{{\cal D}_+({\cal R}+\Delta_-)}/{\cal R}. \eqno(5)]

The remaining expressions remain unchanged. The above misprint was introduced in an attempt to make the formulae used in the numerical analysis more compact. Thus, all the reported numerical results are correct except for the error bars in Fig. 6. These must be multiplied by 10−2, a factor that was overlooked in the relevant numerical conversion.

It is also added that the above [\hat {\bf n}_{2,\ldots}] expressions simplify as follows:

[\hat {\bf n}_{2,{\rm I}}=\hat {\bf n}_{2,{\rm III}}=1+[\hat {{\cal A}_{\,\,\,}}\!\!(1+{\cal R})]^{1/2} \eqno(6)]

and

[\hat {\bf n}_{2,{\rm II}}=\hat {\bf n}_{2,{\rm IV}}=1-[\hat {{\cal A}_{\,\,\,}}\!\!(1+{\cal R})]^{1/2}, \eqno(7)]

with [\hat {{\cal A}_{\,\,\,}} \!\! \equiv {\cal A}/(2\pi{\cal S} n_1^2)].

Acknowledgements

We are very grateful to an anonymous referee for having made us aware of the misprints and the simplification of the [\hat {\bf n}_{2,\ldots}] expressions.

References

First citationCiccariello, S., Menichenko, Y. B. & He, L. (2011). J. Appl. Cryst. 44, 43–51.  Web of Science CrossRef CAS IUCr Journals Google Scholar

© International Union of Crystallography. Prior permission is not required to reproduce short quotations, tables and figures from this article, provided the original authors and source are cited. For more information, click here.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 44| Part 5| October 2011| Page 1137
https://doi.org/10.1107/S0021889811035631
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