✦ LIBER ✦

Formation of molecular cluster anions by laser ablation of a metal target near a supersonic jet

✍ Scribed by Wenyun Lu; Rongbin Huang; Shihe Yang

Book ID: 103992730
Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 287 KB
Volume: 92
Category: Article
ISSN: 1010-6030
DOI: 10.1016/1010-6030(95)04160-8

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✦ Synopsis

By laser ablation of a metal target (Zn, Mg or Gd) near the stream of a supersonic expansion, molecular oxygen cluster anions (02),were efficiently produced with n in the range of 1-20 or more. The cluster anions were analysed by a time-of-flight mass spectrometer. Molecular cluster anion formation is attributed to low-energy electron attachment and high-Rydberg-state electron transfer. In the case of Gd, the addition products Gd(O2)~-and Gd2(O2),-were also observed. These products are thought to originate from ion-molecule association reactions.

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