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arXiv · 1103.5093

Understanding Ultracold Neutron Production in Oxygen Solids from Volume and Temperature Dependent Yields

C. -Y. Liu·C. M. Lavelle·D. J. Salvat·W. Fox·G. Manus·P. M. McChesney·Y. Shin·A. Couture
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Abstract

We present experimental data on ultracold neutron (UCN) production in solid oxygen from 5 K to 50 K. The experiment used 3 cells of different dimensions in order to study the excess UCN elastic scattering in s-O$_2$ due to source density non-uniformities. We present a combined $χ^2$ analysis with the aid of Monte-Carlo simulations which contain the detailed physics of UCN transport as well as cold neutron attenuation. The results validate the UCN production and upscattering cross-sections extracted from the dynamic structure function derived from inelastic neutron scattering, and illustrate the role of magnetic scattering in enhancing UCN production in s-O$_2$.

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C. -Y. Liu, C. M. Lavelle, D. J. Salvat, W. Fox, G. Manus, P. M. McChesney, Y. Shin, A. Couture. 2011-03-25. Understanding Ultracold Neutron Production in Oxygen Solids from Volume and Temperature Dependent Yields. https://arxiv.org/abs/1103.5093

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