✦ LIBER ✦

Laser desorption of metal cluster ions from modified metal surfaces

✍ Scribed by James R. Gord; Steven W. Buckner; Ben S. Freiser

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 483 KB
Volume: 153
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)85264-3

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✦ Synopsis

Small metal cluster ions have been generated by direct laser desorption of modified or "activated" surfaces. Activation is achieved through electrochemical roughening and laser roughening of polished metal surfaces, leading to enhanced signals for Cu: (n=2, 3), Ag: (n= 3, 5), and Au: (n=2, 3). These ions have been observed using Fourier transform ion cyclotron resonance mass spectrometry, and the effects of laser power on their production have been investigated. Low-energy collision-induced dissociation of Au: has been observed to produce predominantly Au+.

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