Charge Correlations in a Harmonic Trap

A system of N classical Coulomb charges trapped in a harmonic potential displays shell structure and orientational ordering. The local density profile is well understood from theory, simulation, and experiment. Here, pair correlations are considered for this highly inhomogeneous system for both the fluid and ordered states. In the former, it is noted that there is a close relationship to pair correlations in the uniform one component plasma. For the ordered state, it is shown that the disordered “tiling” is closely related to the ground state Thomson sites for a single sphere (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

[1]  M. Bonitz,et al.  Shell Structure of Confined Charges at Strong Coupling , 2009, 0910.0076.

[2]  M. Bonitz,et al.  Theoretical description of Coulomb balls: fluid phase. , 2009, Physical review. E, Statistical, nonlinear, and soft matter physics.

[3]  J. Cioslowski,et al.  Parameter-free shell model of spherical Coulomb crystals. , 2008, Physical review. E, Statistical, nonlinear, and soft matter physics.

[4]  D. Asmus,et al.  Ground states of finite spherical Yukawa crystals , 2008, 0805.4617.

[5]  M. Bonitz,et al.  Shell Structure of Yukawa Balls , 2007 .

[6]  H. Fehske,et al.  Screened Coulomb balls : structural properties and melting behaviour , 2006 .

[7]  A. Piel,et al.  Structural properties of screened Coulomb balls. , 2005, Physical review letters.

[8]  M. Bonitz,et al.  Structure of spherical three-dimensional Coulomb crystals. , 2005, Physical review. E, Statistical, nonlinear, and soft matter physics.

[9]  H. Fehske,et al.  3D Coulomb balls: experiment and simulation , 2005 .

[10]  A. Piel,et al.  Dust Coulomb balls: three-dimensional plasma crystals. , 2004, Physical review letters.

[11]  T. Pattard,et al.  Coulomb crystallization in expanding laser-cooled neutral plasmas. , 2003, Physical review letters.

[12]  T. M. O'Neil,et al.  Trapped nonneutral plasmas, liquids, and crystals (the thermal equilibrium states) , 1999 .

[13]  E. P. Ferreira,et al.  The interactions of π - -mesons with complex nuclei in the energy range (100–800) MeV. III. The interaction lengths and elastic scattering of 300 MeV π - -mesons in G5 emulsion , 1959 .