Crystallization of ion clouds in octupole traps: structural transitions, core melting, and scaling laws - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2009

Crystallization of ion clouds in octupole traps: structural transitions, core melting, and scaling laws

Résumé

The stable structures and melting properties of ion clouds in isotropic octupole traps are investigated using a combination of semi-analytical and numerical models, with a particular emphasis at finite size scaling effects. Small-size clouds are found to be hollow and arranged in shells corresponding approximately to the solutions of the Thomson problem. The shell structure is lost in clusters containing more than a few thousands of ions, the inner parts of the cloud becoming soft and amorphous. While melting is triggered in the core shells, the melting temperature unexpectedly follows the rule expected for three-dimensional dense particles, with a depression scaling linearly with the inverse radius.
Fichier principal
Vignette du fichier
octupolar_final.pdf (1.12 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00428965 , version 1 (16-11-2009)

Identifiants

Citer

Florent Calvo, Caroline Champenois, Ersin Yurtsever. Crystallization of ion clouds in octupole traps: structural transitions, core melting, and scaling laws. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2009, 80, pp.063401. ⟨10.1103/PhysRevA.80.063401⟩. ⟨hal-00428965⟩
76 Consultations
102 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More