Production of Ultra-Cold-Neutrons in Solid \alpha-Oxygen
| Autor: | Gutsmiedl, E., Frei, A., Boehle, F., Maier, A., Paul, S., Schober, H., Orecchini, A. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1209/0295-5075/96/62001 |
| Popis: | Our recent neutron scattering measurements of phonons and magnons in solid \alpha-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 \alpha-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 \alpha-oxygen is in comparison to solid deuterium less effcient in the down-scattering of thermal or cold neutrons into the UCN energy regime. Comment: 4 pages, 5 figuers |
| Databáze: | arXiv |
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