Measurement of the neutron lifetime with ultra-cold neutrons stored in a magneto-gravitational trap

2014/12/23 by V. F. Ezhov, В. Ф. Ежов, Ezhov, V. F. +21 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex) #Quantum, superfluid, helium dynamics #nucl-ex #physics.ins-det

paper · pdf · doi:10.48550/arxiv.1412.7434

4 pages, 3 figures

arxiv created 2014/12/23 · openalex publication_date 2014/12/23 · arxiv updated 2014/12/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report a new measurement of the neutron lifetime using ultra-cold 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 τ_n=(878.3±1.9)s. It is the most precise measurement of the neutron lifetime obtained with magnetically stored neutrons.

Cited by

• Ultracold neutron energy spectrum and storage properties from magnetically induced spin depolarization
• Detection of ultracold neutrons with powdered scintillator screens

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