New Developments for 2D High-Resolution Neutron Scattering Experiments: Application Case and Experimental Examples from Crystals to Polymer Science

Abstract

Neutron detectors designed to observe wide scattering angles are usually mono or linear detectors allowing the study of the reciprocal space along one direction only (linear multidetector or 2 or 3-axis spectrometers). The observation of a scattering plane has been typically developed for small angle neutron scattering experiments (SANS) [1]. The SANS detectors are typically 2-dimensional multidetectors of large dimensions (∼1m × 1m), of relatively large elementary pixel size (∼ 0.01m × 0.01m), and limited pixel number. Because of these large dimensions, the limited number of the pixels, and also of the technique generally employed to select the wavelength (mechanical selectors provide a wavelength dispersion of about Δλ/λ ≈ 10–14%), the SANS resolution is low.

Acknowledgments

We are very grateful to B. Dessus, O. Gal, Marguerite Quilichini, Gerhard Krexner, Arsen Goukasov, Daniel Petitgrand, O. Dial, G. Exil, and G. Pépy for the fruitful discussions and advice.

Notes

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