Fragmentation phase transitions in atomic clusters III

Coulomb explosion of metal clusters

O. Schapiro, P. J. Kuntz, K. Möhring, P. A. Hervieux, D. H E Gross, Mohamed Madjet

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We discuss the role and the treatment of polarization effects in many-body systems of charged conducting clusters and apply this to the statistical fragmentation of Na-clusters. We see a first order microcanonical phase transition in the fragmentation of Na70 Z+ for Z = 0 to 8. We can distinguish two fragmentation phases, namely evaporation of large particles from a large residue and a complete decay into small fragments only. Charging the cluster shifts the transition to lower excitation energies and forces the transition to disappear for charges higher than Z = 8. At very high charges the fragmentation phase transition no longer occurs because the cluster Coulomb-explodes into small fragments even at excitation energy ε* = 0.

Original languageEnglish
Pages (from-to)219-227
Number of pages9
JournalZeitschrift fur Physik D-Atoms Molecules and Clusters
Volume41
Issue number3
Publication statusPublished - 1 Aug 1997
Externally publishedYes

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atomic clusters
metal clusters
explosions
fragmentation
fragments
excitation
charging
evaporation
conduction
energy
shift
decay
polarization

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Fragmentation phase transitions in atomic clusters III : Coulomb explosion of metal clusters. / Schapiro, O.; Kuntz, P. J.; Möhring, K.; Hervieux, P. A.; Gross, D. H E; Madjet, Mohamed.

In: Zeitschrift fur Physik D-Atoms Molecules and Clusters, Vol. 41, No. 3, 01.08.1997, p. 219-227.

Research output: Contribution to journalArticle

Schapiro, O. ; Kuntz, P. J. ; Möhring, K. ; Hervieux, P. A. ; Gross, D. H E ; Madjet, Mohamed. / Fragmentation phase transitions in atomic clusters III : Coulomb explosion of metal clusters. In: Zeitschrift fur Physik D-Atoms Molecules and Clusters. 1997 ; Vol. 41, No. 3. pp. 219-227.
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