Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 365, Issue -, Pages 255-259Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijms.2013.12.022
Keywords
Resonant multiphoton ionization; Helium droplet; Dopant ejection; Relaxation; Copper cluster
Funding
- Austrian Science Fund (FWF) [22962-N20]
- European Commission and the Styrian Government within the ERDF program
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Mass and optical spectroscopic methods are used for the analysis of copper (Cu) atoms and clusters doped to helium nanodroplets (He-N). A two-color resonant two-photon ionization scheme is applied to study the Cu P-2 degrees(1/2,3/2) <-(2)s(1/2) ground state transition. The absorption is strongly broadened for Cu atoms submerged inside helium nanodroplets and a comparison with computed literature values is provided. An observed ejection of the dopant from the droplet is triggered upon excitation, populating energetically lower states. The formation of Cu-n clusters up to Cu-7 inside helium nanodroplets was observed by means of electron impact ionization mass spectroscopy. (C) 2014 The Authors. Published by Elsevier B.V.
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