Size determination of Ar clusters formed in conical nozzles

V. Pelenovich, X. M. Zeng, A. Ieshkin, W. B. Zuo, V. S. Chernysh, A. B. Tolstogouzov, B. Yang, D. J. Fu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, we study time-of-flight (TOF) mass-spectra of the Ar cluster beams obtained by nozzles with different diameters, at different source pressures, and ionizing electron energies. The TOF mass-spectra are measured at minimal electron energy, since there is a strong influence on the mass-spectra by the multiple ionization of the clusters. The cluster size derived from TOF mass-spectra is considered as a function of the condensation parameter Γ * . Attenuation of the cluster current due to collisions with residual gas is also studied. An estimation of the relative cluster size by the current attenuation is proposed.

Original languageEnglish
Pages (from-to)131-134
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume450
DOIs
Publication statusPublished - 1 Jul 2019

Keywords

  • Condensation parameter
  • Gas cluster ion beam
  • Mean cluster size

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