Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Experiments with ultracold neutrons
Репозиторій DSpace/Manakin
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Experiments with ultracold neutrons
Тема:
8th International Conference on Cryocrystals and Quantum Crystals
Інший ID:
PACS: 14.20.Dh, 03.75.Be, 29.25.Dz
Посилання:
Experiments with ultracold neutrons / V.V. Nesvizhevsky // Физика низких температур. — 2011. — Т. 37, № 5. — С. 471–476. — Бібліогр.: 107 назв. — англ.
Підтримка:
We presented recent experiments with UCN and discussed further prospects in the field. These studies as well as many other applications of slow neutrons are rapidly progressing.
The author is sincerely grateful to all colleagues contributed to the studies overviewed here, in particular to GRANIT collaborators. These experiments are supported in part by GRANIT collaboration, by ANR (Agence Nationale de la Recherche, France), and the Federal program “Scientific and pedagogical cadres of innovative Russia”.
Дата:
2011
Переглядів:
828
Завантажень:
518
Анотація:
Ultracold neutrons (UCN) form a tiny low-energy fraction in Maxwelian spectrum of thermal neutrons in moderators of nuclear reactors and spallation sources. Their energy is extremely small (~10⁻⁷ eV), their velocity is a few meters per second, and their effective temperature is as low as ~1 mK. Specific feature of UCN consists of their nearly total elastic reflection from nuclear-optical potential of many materials at any incidence angle; therefore they could be stored in closed traps for many minutes, thus they could be used for extremely sensitive measurements. A fraction of UCN in the thermal neutron flux is as low as 10⁻¹¹–10⁻¹², and serious efforts are undertaken all over the world to produce UCN in larger amounts. UCN are widely used in precision particle physics experiments. Applications of UCN are emerging in surface and nanoparticle physics. Here we will focus on recent advances in the field.
