Penning detachment from atomic clusters

F. Martín, M. E. Madjet, P. A. Hervieux, J. Hanssen, M. F. Politis, R. S. Berry

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Theoretical cross-sections are presented for Penning detachment of negatively-charged sodium clusters, receiving their detachment energy from Na*(3p0,2P). Two clusters are examined: Na-7 and Na-19. Classical trajectories describe the relative motion of the colliding species. Kohn-Sham density functional theory in local approximation, with exchange, correlation, and self-interaction corrections, and a spherical jellium potential, describe the electrons involved in the transition. In the range of collision energies from 0.1 to 10 eV/amu, the cross-sections for Penning detachment are approximately 10-13 cm2. This implies that Penning detachment may be an effective means to prepare neutral clusters from size-selected negative-ion clusters in the laboratory.

Original languageEnglish
Pages (from-to)8934-8938
Number of pages5
JournalJournal of Chemical Physics
Issue number19
Publication statusPublished - 15 Nov 1999


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Martín, F., Madjet, M. E., Hervieux, P. A., Hanssen, J., Politis, M. F., & Berry, R. S. (1999). Penning detachment from atomic clusters. Journal of Chemical Physics, 111(19), 8934-8938.