Free Sodium-Water Clusters
1986; American Physical Society; Volume: 57; Issue: 14 Linguagem: Inglês
10.1103/physrevlett.57.1703
ISSN1092-0145
AutoresC. P. Schulz, R. Haugstätter, H. U. Tittes, I. V. Hertel,
Tópico(s)Atomic and Molecular Physics
ResumoNeutral sodium-water clusters are formed in a "pickup" source, injection of a beam of Na atoms into the expansion zone of a pulsed nozzle-jet beam of water vapor seeded into an argon carrier gas. They are detected by near-uv one-photon ionization with a pulsed laser and time-of-flight mass spectroscopy. $\mathrm{Na}{({\mathrm{H}}_{2}\mathrm{O})}_{n}$-cluster-ion signals up to $n=12$ are seen, $n=4$ showing a very pronounced abundance. The ionization potential of NaO${\mathrm{H}}_{2}$ is determined to be 4.379 \ifmmode\pm\else\textpm\fi{} 0.002 eV.
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