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Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons

We compute classical trajectories of Ultracold neutrons (UCNs) in a superconducting Ioffe-type magnetic trap using a symplectic integration method. We find that the computed escape time for a particular set of initial conditions (momentum and position) does not generally stabilize as the time step p...

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Detalles Bibliográficos
Autores principales: Coakley, K. J., Doyle, J. M., Dzhosyuk, S. N., Yang, L., Huffman, P. R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4852821/
https://www.ncbi.nlm.nih.gov/pubmed/27308152
http://dx.doi.org/10.6028/jres.110.055
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author Coakley, K. J.
Doyle, J. M.
Dzhosyuk, S. N.
Yang, L.
Huffman, P. R.
author_facet Coakley, K. J.
Doyle, J. M.
Dzhosyuk, S. N.
Yang, L.
Huffman, P. R.
author_sort Coakley, K. J.
collection PubMed
description We compute classical trajectories of Ultracold neutrons (UCNs) in a superconducting Ioffe-type magnetic trap using a symplectic integration method. We find that the computed escape time for a particular set of initial conditions (momentum and position) does not generally stabilize as the time step parameter is reduced unless the escape time is short (less than approximately 10 s). For energy intervals where more than half of the escape times computed for UCN realizations are numerically well determined, we predict the median escape time as a function of the midpoint of the interval.
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spelling pubmed-48528212016-06-15 Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons Coakley, K. J. Doyle, J. M. Dzhosyuk, S. N. Yang, L. Huffman, P. R. J Res Natl Inst Stand Technol Article We compute classical trajectories of Ultracold neutrons (UCNs) in a superconducting Ioffe-type magnetic trap using a symplectic integration method. We find that the computed escape time for a particular set of initial conditions (momentum and position) does not generally stabilize as the time step parameter is reduced unless the escape time is short (less than approximately 10 s). For energy intervals where more than half of the escape times computed for UCN realizations are numerically well determined, we predict the median escape time as a function of the midpoint of the interval. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005 2005-08-01 /pmc/articles/PMC4852821/ /pubmed/27308152 http://dx.doi.org/10.6028/jres.110.055 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Coakley, K. J.
Doyle, J. M.
Dzhosyuk, S. N.
Yang, L.
Huffman, P. R.
Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons
title Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons
title_full Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons
title_fullStr Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons
title_full_unstemmed Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons
title_short Chaotic Scattering and Escape Times of Marginally Trapped Ultracold Neutrons
title_sort chaotic scattering and escape times of marginally trapped ultracold neutrons
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4852821/
https://www.ncbi.nlm.nih.gov/pubmed/27308152
http://dx.doi.org/10.6028/jres.110.055
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