Formation of gold cluster cations by direct laser vaporization |
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| Affiliation: | 1. Key Laboratory of Computational Geodynamics, University of Chinese Academy of Sciences, Beijing 100049, PR China;2. Université d''Orléans, ISTO, UMR 7327, 45071 Orléans, France;3. CNRS/BRGM/INSU, ISTO, UMR 7327, 45071 Orléans, France;4. SKL, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, PR China |
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| Abstract: | Gold cluster cations, Au+n, with n= 1 to 6 have been produced by direct laser vaporization of gold metal in a Fourier transform ion cyclotron resonance mass spectrometer. Wavelength studies at λ = 532, 355, and 266 nm show similar results. However, the intensities and intensity ratios of the cluster ions strongly depended on laser power at the two longer wavelengths. Ionization energies of Au+ , Au+2, and Au+3 have also been estimated. |
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