| Autor: |
Nesvizhevsky, V. V., Voronin, A. Yu., Lambrecht, A., Reynaud, S., Lychagin, E. V., Muzychka, A. Yu., Nekhaev, G. V., Strelkov, A. V. |
| Rok vydání: |
2016 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| Popis: |
We performed precision measurements of the probability of small heating and spectrum of UCNs up-scattered on the surface of hydrogen-free oil Fomblin Y-HVAC 18/8 as a function of temperature. The probability is well reproducible, does not depend on sample thickness and does not evolve in time. It is equal (9.8+-0.2)10^(-6) at the ambient temperature. The spectrum coincides with those measured with solid-surface and nanoparticle samples. Indirect arguments indicate that spectrum shape weakly depends on temperature. Measured experimental data can be satisfactory described both within the model of near-surface nanodroplets and the model of capillary waves. |
| Databáze: |
arXiv |
| Externí odkaz: |
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