Measurement of the Neutron Lifetime with Ultracold Neutrons Stored in a Magneto-Gravitational Trap
- Авторы: Ezhov V.F.1,2, Andreev A.Z.1, Ban G.3, Bazarov B.A.1, Geltenbort P.4, Glushkov A.G.1, Knyazkov V.A.1, Kovrizhnykh N.A.5, Krygin G.B.1, Naviliat-Cuncic O.3,6, Ryabov V.L.1
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Учреждения:
- Petersburg Nuclear Physics Institute
- St. Petersburg State University
- Université de Caen Normandie
- Institut Laue–Langevin
- Efremov Scientific Research Institute of Electrophysical Apparatus
- National Superconducting Cyclotron Laboratory
- Выпуск: Том 107, № 11 (2018)
- Страницы: 671-675
- Раздел: Fields, Particles, and Nuclei
- URL: https://journals.rcsi.science/0021-3640/article/view/160993
- DOI: https://doi.org/10.1134/S0021364018110024
- ID: 160993
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Аннотация
We report a measurement of the neutron lifetime using ultracold neutrons stored in a magneto-gravitational trap made of permanent magnets. Neutrons surviving in the trap after fixed storage times have been counted and the trap losses have continuously been monitored during storage by detecting neutrons leaking from the trap. The value of the neutron lifetime resulting from this measurement is τn = (878.3 ± 1.6stat ± 1.0syst) A unique feature of this experiment is the monitoring of leaking neutrons providing a robust control of the main systematic loss.
Об авторах
V. Ezhov
Petersburg Nuclear Physics Institute; St. Petersburg State University
Автор, ответственный за переписку.
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300; St. Petersburg, 199034
A. Andreev
Petersburg Nuclear Physics Institute
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300
G. Ban
Université de Caen Normandie
Email: Ezhov_VF@pnpi.nrcki.ru
Франция, Caen, 14032
B. Bazarov
Petersburg Nuclear Physics Institute
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300
P. Geltenbort
Institut Laue–Langevin
Email: Ezhov_VF@pnpi.nrcki.ru
Франция, Grenoble, 38042
A. Glushkov
Petersburg Nuclear Physics Institute
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300
V. Knyazkov
Petersburg Nuclear Physics Institute
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300
N. Kovrizhnykh
Efremov Scientific Research Institute of Electrophysical Apparatus
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, St. Petersburg, 196641
G. Krygin
Petersburg Nuclear Physics Institute
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300
O. Naviliat-Cuncic
Université de Caen Normandie; National Superconducting Cyclotron Laboratory
Email: Ezhov_VF@pnpi.nrcki.ru
Франция, Caen, 14032; East Lansing, MI, 48824
V. Ryabov
Petersburg Nuclear Physics Institute
Email: Ezhov_VF@pnpi.nrcki.ru
Россия, Gatchina, 188300
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