Calculation of electrostatic fields using quasi-Green's functions: application to the hybrid Penning trap.

Verdú, J, Kreim, S, Blaum, K, Kracke, H, Quint, W, Ulmer, S and Walz, J (2008) Calculation of electrostatic fields using quasi-Green's functions: application to the hybrid Penning trap. New Journal of Physics, 10 (10). p. 103009. ISSN 1367-2630

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Abstract

Penning traps offer unique possibilities for storing, manipulating and investigating charged particles with high sensitivity and accuracy. The widespread applications of Penning traps in physics and chemistry comprise e.g. mass spectrometry, laser spectroscopy, measurements of electronic and nuclear magnetic moments, chemical sample analysis and reaction studies. We have developed a method, based on the Green's function approach, which allows for the analytical calculation of the electrostatic properties of a Penning trap with arbitrary electrodes. The ansatz features an extension of Dirichlet's problem to nontrivial geometries and leads to an analytical solution of the Laplace equation. As an example we discuss the toroidal hybrid Penning trap designed for our planned measurements of the magnetic moment of the (anti)proton. As in the case of cylindrical Penning traps, it is possible to optimize the properties of the electric trapping fields, which is mandatory for high-precision experiments with single charged particles. Of particular interest are the anharmonicity compensation, orthogonality and optimum adjustment of frequency shifts by the continuous SternGerlach effect in a quantum jump spectrometer. The mathematical formalism developed goes beyond the mere design of novel Penning traps and has potential applications in other fields of physics and engineering.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Jose VerduGaliana
Date Deposited: 06 Feb 2012 20:23
Last Modified: 07 Mar 2017 03:37
URI: http://sro.sussex.ac.uk/id/eprint/25724

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