Axial to transverse energy mixing dynamics in octupole-based magnetostatic antihydrogen traps

Zhong, A.; Fajans, J.; Zukor, A. F.

doi:10.1088/1367-2630/aabb84

Title: Axial to transverse energy mixing dynamics in octupole-based magnetostatic antihydrogen traps

Journal Article · 01 May 2018 · New Journal of Physics

DOI: https://doi.org/10.1088/1367-2630/aabb84 · OSTI ID:1437847

Zhong, A.;

; Zukor, A. F.

Abstract The nature of the trajectories of antihydrogen atoms confined in an octupole minimum-B trap is of great importance for upcoming spectroscopy, cooling, and gravity experiments. Of particular interest is the mixing time between the axial and transverse energies for the antiatoms. Here, using computer simulations, we establish that almost all trajectories are chaotic, and then quantify the characteristic mixing time between the axial and transverse energies. We find that there are two classes of trajectories: for trajectories whose axial energy is higher than about 20% of the total energy, the axial energy substantially mixes within about 10 s, whereas for trajectories whose axial energy is lower than about 10% of the total energy, the axial energy remains nearly constant for 1000 s or longer.

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Research Organization:: Univ. of California, Berkeley, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-06ER54904

OSTI ID:: 1437847

Journal Information:: New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 5 Vol. 20; ISSN 1367-2630

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United Kingdom

Language:: English

References (27)

Determining Lyapunov exponents from a time series Wolf, Alan; Swift, Jack B.; Swinney, Harry L. Physica D: Nonlinear Phenomena, Vol. 16, Issue 3 https://doi.org/10.1016/0167-2789(85)90011-9	journal	July 1985
A magnetic trap for antihydrogen confinement Bertsche, W.; Boston, A.; Bowe, P. D. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 566, Issue 2 https://doi.org/10.1016/j.nima.2006.07.012	journal	October 2006
A magneto-gravitational trap for absolute measurement of the ultra-cold neutron lifetime Walstrom, P. L.; Bowman, J. D.; Penttila, S. I. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 599, Issue 1 https://doi.org/10.1016/j.nima.2008.11.010	journal	February 2009
The ALPHA antihydrogen trapping apparatus Amole, C.; Andresen, G. B.; Ashkezari, M. D. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 735 https://doi.org/10.1016/j.nima.2013.09.043	journal	January 2014
Magnetic trapping of neutrons Huffman, P. R.; Brome, C. R.; Butterworth, J. S. Nature, Vol. 403, Issue 6765 https://doi.org/10.1038/47444	journal	January 2000
Trapped antihydrogen Andresen, G. B.; Ashkezari, M. D.; Baquero-Ruiz, M. Nature, Vol. 468, Issue 7324 https://doi.org/10.1038/nature09610	journal	November 2010
Resonant quantum transitions in trapped antihydrogen atoms Amole, C.; Ashkezari, M. D.; Baquero-Ruiz, M. Nature, Vol. 483, Issue 7390 https://doi.org/10.1038/nature10942	journal	March 2012
An improved limit on the charge of antihydrogen from stochastic acceleration Ahmadi, M.; Baquero-Ruiz, M.; Bertsche, W. Nature, Vol. 529, Issue 7586 https://doi.org/10.1038/nature16491	journal	January 2016
Observation of the 1S–2S transition in trapped antihydrogen Ahmadi, M.; Alves, B. X. R.; Baker, C. J. Nature, Vol. 541, Issue 7638 https://doi.org/10.1038/nature21040	journal	December 2016
Observation of the hyperfine spectrum of antihydrogen Ahmadi, M.; Alves, B. X. R.; Baker, C. J. Nature, Vol. 548, Issue 7665 https://doi.org/10.1038/nature23446	journal	August 2017
Description and first application of a new technique to measure the gravitational mass of antihydrogen Charman, A. E. Nature Communications, Vol. 4, Issue 1 https://doi.org/10.1038/ncomms2787	journal	April 2013
An experimental limit on the charge of antihydrogen Amole, C.; Ashkezari, M. D.; Baquero-Ruiz, M. Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms4955	journal	June 2014
Confinement of antihydrogen for 1,000 seconds Collaboration, Alpha Nature Physics, Vol. 7, Issue 7, p. 558-564 https://doi.org/10.1038/nphys2025	journal	January 2011
Nonlinear dynamics of anti-hydrogen in magnetostatic traps: implications for gravitational measurements Zhmoginov, A. I.; Charman, A. E.; Shalloo, R. Classical and Quantum Gravity, Vol. 30, Issue 20 https://doi.org/10.1088/0264-9381/30/20/205014	journal	October 2013
Cooling of Rydberg during radiative cascade Taylor, C. L.; Zhang, Jingjing; Robicheaux, F. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 39, Issue 23 https://doi.org/10.1088/0953-4075/39/23/012	journal	November 2006
Production of antihydrogen at reduced magnetic field for anti-atom trapping Andresen, G. B.; Bertsche, W.; Boston, A. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 41, Issue 1 https://doi.org/10.1088/0953-4075/41/1/011001	journal	December 2007
Positron and electron collisions with anti-protons in strong magnetic fields Hurt, Jennifer L.; Carpenter, Patrick T.; Taylor, Christine L. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 41, Issue 16 https://doi.org/10.1088/0953-4075/41/16/165206	journal	August 2008
Atomic processes in antihydrogen experiments: a theoretical and computational perspective Robicheaux, F. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 41, Issue 19 https://doi.org/10.1088/0953-4075/41/19/192001	journal	September 2008
A proposal for laser cooling antihydrogen atoms Donnan, P. H.; Fujiwara, M. C.; Robicheaux, F. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 46, Issue 2 https://doi.org/10.1088/0953-4075/46/2/025302	journal	January 2013
Discriminating between antihydrogen and mirror-trapped antiprotons in a minimum-B trap Amole, C.; Andresen, G. B.; Ashkezari, M. D. New Journal of Physics, Vol. 14, Issue 1 https://doi.org/10.1088/1367-2630/14/1/015010	journal	January 2012
Using stochastic acceleration to place experimental limits on the charge of antihydrogen Baquero-Ruiz, M.; Charman, A. E.; Fajans, J. New Journal of Physics, Vol. 16, Issue 8 https://doi.org/10.1088/1367-2630/16/8/083013	journal	August 2014
Neutron lifetime measurements and effective spectral cleaning with an ultracold neutron trap using a vertical Halbach octupole permanent magnet array Leung, K. K. H.; Geltenbort, P.; Ivanov, S. Physical Review C, Vol. 94, Issue 4 https://doi.org/10.1103/PhysRevC.94.045502	journal	October 2016
Antimatter Interferometry for Gravity Measurements Hamilton, Paul; Zhmoginov, Andrey; Robicheaux, Francis Physical Review Letters, Vol. 112, Issue 12 https://doi.org/10.1103/PhysRevLett.112.121102	journal	March 2014
Cooling Neutral Atoms in a Magnetic Trap for Precision Spectroscopy Pritchard, David E. Physical Review Letters, Vol. 51, Issue 15 https://doi.org/10.1103/PhysRevLett.51.1336	journal	October 1983
Cooling by Spontaneous Decay of Highly Excited Antihydrogen Atoms in Magnetic Traps Pohl, T.; Sadeghpour, H. R.; Nagata, Y. Physical Review Letters, Vol. 97, Issue 21 https://doi.org/10.1103/PhysRevLett.97.213001	journal	November 2006
Neutron storage in a magnetic field Abov, Yu. G.; Vasiliev, V. V.; Schvedov, O. V. Physics of Atomic Nuclei, Vol. 63, Issue 8 https://doi.org/10.1134/1.1307455	journal	August 2000
On the measurement of the neutron lifetime using ultracold neutrons in a vacuum quadrupole trap Bowman, J. D.; Penttila, S. I. Journal of Research of the National Institute of Standards and Technology, Vol. 110, Issue 4 https://doi.org/10.6028/jres.110.054	journal	July 2005

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
antihydrogen
chaos
minimum-B trap
octupole
orbit dynamics

Title: Axial to transverse energy mixing dynamics in octupole-based magnetostatic antihydrogen traps

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