Ionization energies of aluminum-cesium bimetallic clusters (AlnCsm)

✍ Scribed by Kuniyoshi Hoshino; Katsura Watanabe; Yuji Konishi; Testuya Taguwa; Atsushi Nakajima; Koji Kaya

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 421 KB
• Volume: 231
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)01287-3

✦ Synopsis

Aluminum-cesium bimetallic clusters (Al,&,, ) were produced by the combination of laser vaporization and a high-temperature pulsed nozzle. To investigate their electronic structures, ionization energies (&s) of the Al,Cs, clusters were measured using a tunable ultraviolet laser combined with a time-of-flight mass spectrometer. In general, their I$ decrease by 0.4-l .O eV with increasing number of cesium atoms, but discontinuous changes in Eis can be also observed, which are attributed to electronic shell structures; completeness of electron shell by the addition of a Cs atom induces high E,, and an excess electron from the Cs atom results in large Ei decrement. The electronic stability of the Al,Cs, clusters can be also examined by their abundance.