Next generation experiments measure (20 résultats)

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Hardcover. Etat : Very Good. Hardcover, ix + 182 pages, NOT ex-library. A clean and bright copy with unmarked text and firm binding, free of inscriptions and stamps. Mild external handling wear, a small scuff-mark on the front board. Published without a dust jacket. -- 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. -- Contents: Neutron Lifetime Theory / William J. Marciano; Neutron Lifetime Experiments Using the Beam Method: Past, Present, and Future / F. E. Wietfeldt; Overview of Magnetic Trapping Neutron Lifetime Experiments / P.R. Huffman; Some Thoughts Concerning the Statistics and Ultracold Neutron Source Requirements for the UCNt Experiment / A.R. Young; Phase Space Evolution in Neutron Traps for Measurements of the Neutron Beta-Decay Lifetime / C.Y. Liu, D.Salvat and E. Adamek; Chaos in a Gravo-Magneto Neutron Trap / J. David Bowman and Seppo I. Penttila; Stochastic Modeling and Simulation of Marginally Trapped Neutrons / K.J. Coakley; Spin Flip Loss in Magnetic Storage of Ultracold Neutrons / A. Steyerl; Vibration-Induced Loss of Ultra-Cold Neutrons in a Magneto-Gravitational Trap / D.J. Salvat and P.L. Walstrom; Blind Analysis in Physics Experiments: Is this Trip Necessary? / R. Golub; A Technique for Determining Neutron Beam Fluence to 0.01% Uncertainty / A.T. Yue; A New Method of Neutron Detecton for UCN Lifetime Measurements / C.L. Morris; Measuring the Neutron Lifetime with Magnetically Trapped Ultracold Neutrons / H.P. Mumm; UCNt: Study of Lifetime Measurement in a Magneto-Gravitational Trap / Alexander Saunders; A Comparison of Two Magnetic Ultra-Cold Neutron Trapping Concepts Using a Halbach-Octupole Array / K. Leung; Polarizing Ultra-Cold Neutrons for the Superconducting Trap PENeLOPE / Ruediger Picker; Summary of Workshop on Next Generation Experiments on the Neutron Lifetime / Dirk Dubbers; Color Plates.…

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Gebunden. Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. InhaltsverzeichnisWelcome &amp Charge (Seestrom) Theoretical Introduction (Marciano) Overview of Beam Experiments (Wietfeldt) Overview of Material Bottle Experiments (Geltenbort) Overview of Magnetic Trap Experiments (Huffman) Phas. …

Buch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - 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.…