journal article

Journal Article

Physical Review E. 1993, 47(6), p. 4330-4336

Thermal energy of the crystalline one-component plasma from dynamical simulations

American Physical Society

English

1993-06

https://doi.org/10.1103/PhysRevE.47.4330

R. T. Farouki and S. Hamaguchi, Phys. Rev. E 47, 4330, 1993

Molecular-dynamics simulations employing 1024 particles and a high-accuracy spline approximation of the Ewald potential have been used to measure the excess internal energy of the classical one-component plasma in both the fluid and solid (bcc) phases over a wide range (1≤Γ≤2000) of the coupling parameter. The energy data for Γ≤300 are in excellent agreement with previous Monte Carlo calculations for this range, giving an independent corroboration of these calculations. Data in the crystalline regime 170≤Γ≤2000 are used to estimate the coefficients of the anharmonic energy component by least-squares fits. The first coefficient is in reasonable agreement with peturbation-theory predictions, although it is argued that determination of the coefficients in this manner is a rather ill-conditioned problem. The free-energy curves of the fluid and solid phases are found to cross at Γm173, in agreement with recent estimates. © 1993 The American Physical Society.

Copyright (1993) by the American Physical Society

78509

Thermal energy of the crystalline one-component plasma from dynamical simulations

American Physical Society

English

1993-06

Physical Review E

47

6

4330

4336

https://doi.org/10.1103/PhysRevE.47.4330

https://hdl.handle.net/11094/78509