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Photoionization of (O2)2, (O2)3, and Ar·O2 in the 50–100 nm region: state selective ionization of O2 in a framework of van der Waals molecules

✍ Scribed by Masatoshi Ukai; Kosei Kameta; Kyoji Shinsaka; Yoshihiko Hatano; Takato Hirayama; Shin-ichi Nagaoka; Katsumi Kimura

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
659 KB
Volume
167
Category
Article
ISSN
0009-2614

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✦ Synopsis

Photoionization processes of the van der WaaIs molecules (O&, (02)3, and ArO,, produced in a supersonic expansion were s&died in the 50-100 nm region of synchrotron radiation using mass spectrometry. In the photoionization efficiency (PIE) curves, a large number of autoionization structures of O2 in the 70-100 nm region were almost completely diminished in these clusters, except for the structure due to the c T; (3~0,) Rydberg state of O> Molecular rearrangement seemed to be very important in the formation of 0: and ArO+. Selective photoionization into the 0: (b 2;) state was observed in the PIE spectrum of Al-O+.

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