Phys. Rev. Lett. 69, 1823–1826 (1992)Spectroscopy of neutral silicon clusters Si18–Si41: Spectra are remarkably size independentReceived 29 July 1992; published in the issue dated 21 September 1992 Absorption spectra from 0.94–5.58 eV are obtained for gas-phase neutral silicon clusters Si18–Si41 using resonant one- and two-color photodissociation spectroscopy. The spectra of all clusters are essentially identical. Above 3.0 eV, they exhibit six sharp absorption peaks with cross sections of 1–2 Å2. Multiple photon absorption peaks dominate the spectrum below 3.0 eV. Comparisons of the silicon cluster spectra to those of various forms of silicon show that they have much in common with the spectrum of bulk diamond-lattice crystalline silicon. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.69.1823
DOI:
10.1103/PhysRevLett.69.1823
PACS:
78.40.Fy, 33.20.Kf, 33.20.Lg, 36.40.+d
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