Details
| Original language | English |
|---|---|
| Pages (from-to) | 179-186 |
| Number of pages | 8 |
| Journal | Journal of Electron Spectroscopy and Related Phenomena |
| Volume | 106 |
| Issue number | 2-3 |
| Publication status | Published - Feb 2000 |
| Externally published | Yes |
Abstract
Singly charged gold clusters, Au+n in the size range n = 12 to 72 have been captured and stored in a Penning trap, size selected and subjected to an electron beam. This interaction leads to further ionization as well as dissociation. The resulting abundance spectra of doubly and triply charged clusters show (a) a lower size limit for the production of multiply charged clusters from an ensemble of hot precursors, which can be understood in terms of the respective decay pathways, (b) an odd/even alternation of singly and doubly charged clusters in the size range below n = 30, which inverses sign with change of charge state, and (c) magic numbers, i.e. prominent signals for particular cluster sizes, which can be identified as closed electronic shells. In contrast to similar experiments on silver clusters and in spite of the well-known ligand-stabilized species, there is no indication of a particularly stable charge-state-independent cluster size of n = 55.
Keywords
- Dissociation, Gold clusters, Ionization
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Radiation
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Spectroscopy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 106, No. 2-3, 02.2000, p. 179-186.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electron impact ionization/dissociation of size selected gold cluster cations
AU - Herlert, A.
AU - Krückeberg, S.
AU - Schweikhard, L.
AU - Vogel, Manuel
AU - Walther, Clemens
N1 - Funding information: This work comprises part of the Diplomarbeit of A. Herlert. This work was financed in part by the Deutsche Forschungsgemeinschaft (Schw 401/7, Schw 401/13) and the Materialwissenschaftliches Forschungszentrum Mainz. We acknowledge support by the Johannes Gutenberg-University (A.H.), the Studienstiftung des deutschen Volkes (S.K.), and the Graduiertenkolleg Physik und Chemie Supramolekularer Systeme (C.W.).
PY - 2000/2
Y1 - 2000/2
N2 - Singly charged gold clusters, Au+n in the size range n = 12 to 72 have been captured and stored in a Penning trap, size selected and subjected to an electron beam. This interaction leads to further ionization as well as dissociation. The resulting abundance spectra of doubly and triply charged clusters show (a) a lower size limit for the production of multiply charged clusters from an ensemble of hot precursors, which can be understood in terms of the respective decay pathways, (b) an odd/even alternation of singly and doubly charged clusters in the size range below n = 30, which inverses sign with change of charge state, and (c) magic numbers, i.e. prominent signals for particular cluster sizes, which can be identified as closed electronic shells. In contrast to similar experiments on silver clusters and in spite of the well-known ligand-stabilized species, there is no indication of a particularly stable charge-state-independent cluster size of n = 55.
AB - Singly charged gold clusters, Au+n in the size range n = 12 to 72 have been captured and stored in a Penning trap, size selected and subjected to an electron beam. This interaction leads to further ionization as well as dissociation. The resulting abundance spectra of doubly and triply charged clusters show (a) a lower size limit for the production of multiply charged clusters from an ensemble of hot precursors, which can be understood in terms of the respective decay pathways, (b) an odd/even alternation of singly and doubly charged clusters in the size range below n = 30, which inverses sign with change of charge state, and (c) magic numbers, i.e. prominent signals for particular cluster sizes, which can be identified as closed electronic shells. In contrast to similar experiments on silver clusters and in spite of the well-known ligand-stabilized species, there is no indication of a particularly stable charge-state-independent cluster size of n = 55.
KW - Dissociation
KW - Gold clusters
KW - Ionization
UR - http://www.scopus.com/inward/record.url?scp=0007656527&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0007656527
VL - 106
SP - 179
EP - 186
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
SN - 0368-2048
IS - 2-3
ER -