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Author : Sergei N. Dzhosyuk
Publisher :
ISBN 13 :
Total Pages : 396 pages
Book Rating : 4.:/5 (584 download)
Download or read book Magnetic Trapping of Neutrons for Measurement of the Neutron Lifetime written by Sergei N. Dzhosyuk and published by . This book was released on 2004 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Martin O'Shaughnessy
Publisher :
ISBN 13 :
Total Pages : 161 pages
Book Rating : 4.:/5 (652 download)
Download or read book Development of a Precision Neutron Lifetime Measurement written by Christopher Martin O'Shaughnessy and published by . This book was released on 2010 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : DIANE Publishing
ISBN 13 : 9781422328323
Total Pages : 6 pages
Book Rating : 4.3/5 (283 download)
Download or read book Determination of the Neutron Lifetime Using Magnetically Trapped Neutrons written by and published by DIANE Publishing. This book was released on with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : DIANE Publishing
ISBN 13 : 9781422328385
Total Pages : 6 pages
Book Rating : 4.3/5 (283 download)
Download or read book First Ever Storage of Ultracold Neutrons in a Magnetic Trap Made of Permanent Magnets written by and published by DIANE Publishing. This book was released on with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Susan J Seestrom
Publisher : World Scientific
ISBN 13 : 9814571687
Total Pages : 193 pages
Book Rating : 4.8/5 (145 download)
Download or read book Next Generation Experiments To Measure The Neutron Lifetime - Proceedings Of The Workshop written by Susan J Seestrom and published by World Scientific. This book was released on 2014-03-28 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (727 download)
Download or read book On the Measurement the Neutron Lifetime Using Ultra-cold Neutrons in a Vacuum Quadrupole Trap written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a conceptual design for an experiment to measure the neutron lifetime ((almost equal to)882 s) with an accuracy of 10−4. The lifetime will be measured by observing the decay rate of a sample of UCNs confined in vacuum in a magnetic trap. The UCN collaboration at LANL has developed a prototype ultra-cold neutron UCN source that is expected to produce a bottled UCN density of more than 100 UCN/cm3. The availability of such an intense source makes it possible to approach the measurement of the neutron lifetime in a new way. We argue below that it is possible to measure the neutron lifetime to 10−4 in a vacuum magnetic trap. The measurement involves no new technology beyond the expected UCN density. If even higher densities are available, the experiment can be made better and/or less expensive. We present the design and methodology for the measurement. The slow loss of neutrons that have stable orbits, but are not energetically trapped would produce a systematic error in the measurement. We discuss a new approach, chaotic cleaning, to the elimination of quasi-neutrons from the trap by breaking the rotational symmetry of the quadrupole trap. The neutron orbits take on a chaotic character and mode mixing causes the neutrons on the quasi-bound orbits to leave the trap.
Author :
Publisher : DIANE Publishing
ISBN 13 : 9781422328552
Total Pages : 6 pages
Book Rating : 4.3/5 (285 download)
Download or read book Measurement of the Neutron Lifetime by Counting Trapped Protons written by and published by DIANE Publishing. This book was released on with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measuring the Neutron Lifetime with a Magnetic Neutron Trap at LANL. written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francisco Gonzalez (Physicist)
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.5/5 (169 download)
Download or read book Precision Measurement of the Neutron Lifetime with UCNr Experiment written by Francisco Gonzalez (Physicist) and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : DIANE Publishing
ISBN 13 : 9781422328569
Total Pages : 6 pages
Book Rating : 4.3/5 (285 download)
Download or read book Measurement of the Neutron Lifetime Using a Gravitational Trap and a Low-Temperature Fomblin Coating written by and published by DIANE Publishing. This book was released on with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Liang Yang
Publisher :
ISBN 13 :
Total Pages : 432 pages
Book Rating : 4.:/5 (228 download)
Download or read book Towards Precision Measurement of the Neutron Lifetime Using Magnetically Trapped Neutrons written by Liang Yang and published by . This book was released on 2006 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carlo Egon Heinrich Mattoni
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (576 download)
Download or read book Magnetic Trapping of Unltracold Neutrons Produced Using a Monochromatic Cold Neutron Beam written by Carlo Egon Heinrich Mattoni and published by . This book was released on 2002 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher R. Gould
Publisher : World Scientific
ISBN 13 : 9810246676
Total Pages : 268 pages
Book Rating : 4.8/5 (12 download)
Download or read book Fundamental Physics with Pulsed Neutron Beams written by Christopher R. Gould and published by World Scientific. This book was released on 2001 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low energy neutron beams are used to address many questions in nuclear physics, particle physics and astrophysics. The scientific issues include elucidating the nature of time reversal noninvariance; understanding the origin of the baryon asymmetry in the Universe; describing the weak interaction between quarks and between nucleons; understanding the origin of the elements in stellar and big bang nucleosynthesis.This book summarizes how spallation neutron sources work and discuss the advantages of pulsed beams in reducing systematic errors in precision measurements. It also describes recent breakthroughs in ultracold neutron production, together with the physics that will be addressed by the new generation of intense neutron sources.
Author : Jan Kahlenberg
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (123 download)
Download or read book First Full-magnetic Storage of Ultracold Neutrons in the TSPECT Experiment for Measuring the Neutron Lifetime written by Jan Kahlenberg and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Paul
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (256 download)
Download or read book Measurement of the Neutron Lifetime in a Magnetic Storage Ring written by W. Paul and published by . This book was released on 1989 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.U/5 (183 download)
Download or read book Journal of Research of the National Institute of Standards and Technology written by and published by . This book was released on 2001 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Albert Steyerl
Publisher : World Scientific
ISBN 13 : 9811212724
Total Pages : 500 pages
Book Rating : 4.8/5 (112 download)
Download or read book Ultracold Neutrons written by Albert Steyerl and published by World Scientific. This book was released on 2020-05-26 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultracold Neutrons is a guide to a fascinating topic. It describes how a simple new idea in experimental neutron physics has changed the landscape of what is often called 'fundamental physics.' Ultracold neutrons (UCNs) are neutrons moving at the low speed of a bicycle rider. They were produced for the first time 50 years ago (in 1968) and are distinguished from ordinary neutrons with much higher energies by their ability to be confined in 'neutron bottles' for durations up to several hundred seconds. This is possible since they are reflected back and forth from the container walls many thousands of times with very little loss. As a result of these long observation times, their properties and interactions with the environment can be studied with superb precision.Directed towards a general readership, this book is an excellent introduction to a field of research that is not highly specialized but touches on many aspects of our physical world, classical as well as quantum mechanical.
