An Experimental Study Of Spatial Effects On Mean Neutron Lifetime Measurement
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Author | : William Bruce Hooke |
Publisher | : |
Total Pages | : 60 |
Release | : 1966 |
Genre | : |
ISBN | : |
Download An Experimental Study of Spatial Effects on Mean Neutron Lifetime Measurement Book in PDF, Epub and Kindle
Author | : Susan J Seestrom |
Publisher | : World Scientific |
Total Pages | : 193 |
Release | : 2014-03-28 |
Genre | : Science |
ISBN | : 9814571687 |
Download Next Generation Experiments To Measure The Neutron Lifetime - Proceedings Of The Workshop Book in PDF, Epub and Kindle
There is a great interest in improving the limits on neutron lifetime to the level of a precision of 0.1 s. The neutron lifetime is both an important fundamental quantity as well as a parameter influencing important processes such as nucleosynthesis (Helium production in the early universe) and the rate of energy production in the Sun.Aiming to create a roadmap of R&D for a next generation neutron lifetime experiment that can be endorsed by the North American neutron community, the focus of the workshop was on experiments using traps that utilize ultracold neutrons and confinement by a combination of magnetic and/or gravitational interaction in order to avoid systematic uncertainties introduced by neutron interactions with material walls. The papers in this volume summarize the limitations of present experiments, the discussion of new experiments in planning stage, and the discussion of systematic effects that must be addressed to achieve a lifetime measurement at an accuracy of 0.1 second.Cover image courtesy of Elena Fernández, Los Alamos National Laboratory.
Author | : Anthony Ray Buhl |
Publisher | : |
Total Pages | : 141 |
Release | : 1967 |
Genre | : |
ISBN | : |
Download An Experimental Investigation of Spatial Effects on the Neutron Fluctuation Spectra of a Large Nuclear Reactor Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 170 |
Release | : 1966 |
Genre | : Dissertations, Academic |
ISBN | : |
Download Master's Theses and Doctoral Dissertations in the Pure and Applied Sciences Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 784 |
Release | : 1967 |
Genre | : Neutrons |
ISBN | : |
Download Neutron Noise, Waves and Pulse Propagation Book in PDF, Epub and Kindle
Author | : Texas A & M University |
Publisher | : |
Total Pages | : 192 |
Release | : 1968 |
Genre | : |
ISBN | : |
Download Faculty Publications Book in PDF, Epub and Kindle
Author | : Francisco Gonzalez (Physicist) |
Publisher | : |
Total Pages | : 0 |
Release | : 2021 |
Genre | : Beta decay |
ISBN | : |
Download Precision Measurement of the Neutron Lifetime with UCNr Experiment Book in PDF, Epub and Kindle
Because it lacks an electric charge, the neutron is a useful probe of the electroweak framework of the Standard Model (SM), which describes the process as a particle undergoes radioactive decay. Neutrons are the simplest example of B-decay, which provides a unique suite of tests for fundamental parameters of electroweak theory.The neutron lifetime, rn, can be used in conjunction with its other decay properties to extract Vud. This can then be combined with other particle decays to investigate the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix. By itself, neutron b-decay can be used to study the origins of matter in the universe, and even hunt for new novel decay modes. The UCNr experiment, at Los Alamos National Laboratory (LANL), is the world's most precise measurement of the neutron lifetime. UCNt traps Ultracold Neutrons (UCN) in a bottle of permanent magnets for periods of time longer than the neutron lifetime. This work presents the results of two calendar years of UCNr data taking, resulting in a lifetime with both statistical and systematic uncertainties below 0.3 s. The analysis has utilized new methods to minimize the uncertainties due to backgrounds and initial estimation of the number of trapped UCN. A suite of Monte Carlo simulations, in conjunction with data-driven measurements, have been used to demonstrate the loss rates of UCN in UCNr are below the statistical precision of the experiment. This analysis leads to a blinded lifetime result with uncertainties on rn of -+0.26 +0.21/−0.16s, or a relative precision of 4 x 10−4.
Author | : |
Publisher | : |
Total Pages | : 230 |
Release | : 1960 |
Genre | : Thermal neutrons |
ISBN | : |
Download Integral Neutron Thermalization, Annual Summary Report, October 1 ... - September 30 ... Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 724 |
Release | : 1976 |
Genre | : Nuclear energy |
ISBN | : |
Download Nuclear Science Abstracts Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1408 |
Release | : 1983 |
Genre | : Power resources |
ISBN | : |
Download Energy Research Abstracts Book in PDF, Epub and Kindle