2016/10/14 by C. L. Morris, E. R. Adamek, L. J. Broussard +39 · 4 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Bonner sphere #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Detector #Measure (data warehouse) #Neutron #Neutron cross section #Neutron detection #Neutron temperature #Nuclear physics #Optics #Physics #Radiation Detection and Scintillator Technologies #Ultracold neutrons #nucl-ex #physics.ins-det
paper · pdf · doi:10.1063/1.4983578
arxiv created 2016/10/14 · openalex created_date 2017/01/13 · openalex publication_date 2017/05/01 · arxiv updated 2017/06/28 · openalex updated_date 2026/08/05
In this paper, we describe a new method for measuring surviving neutrons in neutron lifetime measurements using bottled ultracold neutrons (UCN), which provides better characterization of systematic uncertainties and enables higher precision than previous measurement techniques. An active detector that can be lowered into the trap has been used to measure the neutron distribution as a function of height and measure the influence of marginally trapped UCN on the neutron lifetime measurement. In addition, measurements have demonstrated phase-space evolution and its effect on the lifetime measurement.