Simultaneous SANS/FTIR measurement system incorporating the ATR sampling method

Fumitoshi Kaneko; Aurel Radulescu; Hiroshi Nakagawa

doi:10.1107/S1600576723007744

Simultaneous SANS/FTIR measurement system incorporating the ATR sampling method

J Appl Crystallogr. 2023 Sep 27;56(Pt 5):1522-1527. doi: 10.1107/S1600576723007744. eCollection 2023 Oct 1.

Authors

Fumitoshi Kaneko¹, Aurel Radulescu², Hiroshi Nakagawa^{3

4}

Affiliations

¹ Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
² Jülich Centre for Neutron Science (JCNS), Heinz Maier-Leibnitz Zentrum (MLZ), 11 Lichtenbergstrasse 1, 85748 Garching, Germany.
³ Hierarchical Structure Research Group, Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirane, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan.
⁴ J-PARC Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirane, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan.

Abstract

Small-angle neutron scattering (SANS) is widely used as a powerful technique to study the higher-order structure of soft matter. To increase the reliability of SANS profile analysis for complex multi-component systems, combining different types of structural information obtained by other methods is desirable. A simultaneous measurement system combining SANS and Fourier transform infrared (FTIR) spectroscopy meets this objective. It is beneficial for targets where matching the timing of structural changes between experiments is difficult, but the issue is that samples suitable for SANS are too thick for the typical transmission FTIR method. To overcome this problem, a new simultaneous measurement system that employs the attenuated total reflectance (ART) sampling method for FTIR spectroscopy has been developed.

Keywords: ATR; FTIR; Fourier transform infrared spectroscopy; SANS; attenuated total reflectance; simultaneous measurement; small-angle neutron scattering.

Grants and funding

The neutron experiment at JRR-3 was performed under a user program (proposal No. 2022A-A41). This research was partially supported by the International Joint Research Promotion Program (Support for Short-term Personnel Expenses) from Osaka University.