Simultaneous Ion-Neutral Trapping and Applications Alex Povilus Jae Choi Eberhard Hansis Georg Raithel REU-2004 – 7/28/2004.

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Presentation transcript:

Simultaneous Ion-Neutral Trapping and Applications Alex Povilus Jae Choi Eberhard Hansis Georg Raithel REU-2004 – 7/28/2004

-Three-body recombination studies -High angular momentum states likely -Reevaluate traditional Penning trap dynamics (symmetry) -Eye towards Anti-Hydrogen Production Motivation "For me, the most attractive way... would be to capture the antihydrogen in a neutral particle trap... The objective would be to then study the properties of a small number of [antihydrogen] atoms confined in the neutral trap for a long time." -Gerald Gabrielse, 1986 Erice Lecture (shortly after first trapping of antiprotons)

Requirements of Techniques Incompatible Trapping Techniques? Ion Trapping (Penning) -Homogeneous B Field -Electrostatic Potential Well Neutral Trapping (Ioffe) -Magnetic Field Minimum (H=μ·B and adiabatic approx.)

Apparatus Internal Electrodes Superconducting Atom Trap (2.9 Tesla) Cryo-chamber at 4K Optical Trapping Techniques

Electron Motion/ Simulations Sample electron oscillations expected in the system without and with quadrupole magnetic field perturbations.

Experimental Results Ion-Neutral Trapping Observed (  ≈ 50 sec) at Low Density (10 5 e - /cm 3 ) Temperature of Sample Measurement: ~4K

Applications of Technique Three Body Recombination:High Angular Momentum State Generation:

Haiku and References Ions and Neutrals My fields can contain them both Maybe together (1) Squires, Yesley, and Gabrielse, Phys Rev Letters 86, 5266 (2) Bagnato, Lafyatis, Martin, Raab, Ahmad-Bitar, and Pritchard, Phys Rev Letters 58, 2194 (3) Brown and Gabriese, Geonium theory: Physics of a single electron or ion in a Penning trap (4) Gilson and Fajans, Phys. Rev. Letters 90,