### Abstract

Language | English |
---|---|

Pages | 359-366 |

Number of pages | 8 |

Journal | Journal of Plasma Physics |

Volume | 79 |

Issue number | 04 |

Early online date | 19 Dec 2012 |

DOIs | |

Publication status | Published - Aug 2013 |

### Fingerprint

### Keywords

- quantum plasmas
- ion clustering

### Cite this

*Journal of Plasma Physics*,

*79*(04), 359-366. https://doi.org/10.1017/S0022377812001110

}

*Journal of Plasma Physics*, vol. 79, no. 04, pp. 359-366. https://doi.org/10.1017/S0022377812001110

**Clustering of ions at atomic dimensions in quantum plasmas.** / Shukla, Padma; Eliasson, Bengt.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Clustering of ions at atomic dimensions in quantum plasmas

AU - Shukla, Padma

AU - Eliasson, Bengt

PY - 2013/8

Y1 - 2013/8

N2 - By means of particle simulations of the equations of motion for ions interacting among themselves under the influence of newly discovered Shukla–Eliasson attractive force (SEAF) in a dense quantum plasma, we demonstrate that the SEAF can bring ions closer at atomic dimensions. We present simulation results of the dynamics of an ensemble of ions in the presence of the SEAF without and with confining external potentials and collisions between ions and degenerate electrons. Our particle simulations reveal that under the SEAF, ions attract each other, come closer, and form ionic clusters in the bath of degenerate electrons that shield ions. Furthermore, an external confining potential produces robust ion clusters that can have cigar- and ball-like shapes, which remain stable when the confining potential is removed. The stability of ion clusters is discussed. Our results may have applications to solid density plasmas (density exceeding 1023 per cm3), where the electrons will be degenerate and quantum forces due to the electron recoil effect caused by the overlapping of electron wave functions and electron tunneling through the Bohm potential, electron-exchange and electron-exchange and electron correlations associated with electron-1/2 spin effect, and the quantum statistical pressure of the degenerate electrons play a decisive role.

AB - By means of particle simulations of the equations of motion for ions interacting among themselves under the influence of newly discovered Shukla–Eliasson attractive force (SEAF) in a dense quantum plasma, we demonstrate that the SEAF can bring ions closer at atomic dimensions. We present simulation results of the dynamics of an ensemble of ions in the presence of the SEAF without and with confining external potentials and collisions between ions and degenerate electrons. Our particle simulations reveal that under the SEAF, ions attract each other, come closer, and form ionic clusters in the bath of degenerate electrons that shield ions. Furthermore, an external confining potential produces robust ion clusters that can have cigar- and ball-like shapes, which remain stable when the confining potential is removed. The stability of ion clusters is discussed. Our results may have applications to solid density plasmas (density exceeding 1023 per cm3), where the electrons will be degenerate and quantum forces due to the electron recoil effect caused by the overlapping of electron wave functions and electron tunneling through the Bohm potential, electron-exchange and electron-exchange and electron correlations associated with electron-1/2 spin effect, and the quantum statistical pressure of the degenerate electrons play a decisive role.

KW - quantum plasmas

KW - ion clustering

U2 - 10.1017/S0022377812001110

DO - 10.1017/S0022377812001110

M3 - Article

VL - 79

SP - 359

EP - 366

JO - Journal of Plasma Physics

T2 - Journal of Plasma Physics

JF - Journal of Plasma Physics

SN - 0022-3778

IS - 04

ER -