Control Of Screening Of A Charged Particle In Electrolytic Aqueous Paul Trap
- Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6372 (United States)
Individual charged particles could be trapped and confined by the combined radio-frequency and DC quadrupole electric field of an aqueous Paul trap. Viscosity of water improves confinement and extends the range of the trap parameters which characterize the stability of the trap. Electrolyte, if present in aqueous solution, may screen the charged particle and thus partially or fully suppress electrophoretic interaction with the applied filed, possibly reducing it to a generally much weaker dielectrophoretic interaction with an induced dipole. Applying molecular dynamics simulation we show that the quadrupole field has a different effect at the electrolyte ions and at much heavier charged particle, effectively eliminating the screening by electrolyte ions and reinstating the electrophoretic confinement.
- OSTI ID:
- 21513346
- Journal Information:
- AIP Conference Proceedings, Vol. 1336, Issue 1; Conference: CAARI 2010: 21. International Conference on the Application of Accelerators in Research and Industry, Fort Worth, TX (United States), 8-13 Aug 2010; Other Information: DOI: 10.1063/1.3586077; (c) 2011 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AQUEOUS SOLUTIONS
BROWNIAN MOVEMENT
CHARGED PARTICLES
DIPOLES
ELECTRIC FIELDS
ELECTROLYTES
ELECTROPHORESIS
FULLERENES
INTERACTIONS
IONS
MOLECULAR DYNAMICS METHOD
PARTICLES
RADIOWAVE RADIATION
SCREENING
SCREENS
SIMULATION
STABILITY
TRAPS
VISCOSITY
WATER
CALCULATION METHODS
CARBON
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
MIXTURES
MULTIPOLES
NONMETALS
OXYGEN COMPOUNDS
RADIATIONS
SOLUTIONS