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arXiv · 0911.4398

Production of Ultra-Cold-Neutrons in Solid α-Oxygen

E. Gutsmiedl·A. Frei·F. Boehle·A. Maier·S. Paul·H. Schober·A. Orecchini
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Abstract

Our recent neutron scattering measurements of phonons and magnons in solid α-oxygen have led us to a new understanding of the production mechanismen of ultra-cold-neutrons (UCN) in this super-thermal converter. The UCN production in solid α-oxygen is dominated by the excitation of phonons. The contribution of magnons to UCN production becomes only slightly important above E >10 meV and at E >4 meV. Solid α-oxygen is in comparison to solid deuterium less effcient in the down-scattering of thermal or cold neutrons into the UCN energy regime.

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E. Gutsmiedl, A. Frei, F. Boehle, A. Maier, S. Paul, H. Schober, A. Orecchini. 2010-07-30. Production of Ultra-Cold-Neutrons in Solid α-Oxygen. https://doi.org/10.1209/0295-5075%2F96%2F62001

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