Multicollision-induced dissociation of multiply charged gold clusters, Au(n)/2+, n = 7-35, and Au(n)/3+, n = 19-35

Research output: Contribution to journal › Article › Research › peer review

Authors

  • J. Ziegler
  • G. Dietrich
  • S. Krückeberg
  • K. Lützenkirchen
  • L. Schweikhard
  • Clemens Walther

External Research Organisations

  • Johannes Gutenberg University Mainz
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Details

Original languageEnglish
Pages (from-to)47-54
Number of pages8
JournalInternational Journal of Mass Spectrometry
Volume202
Issue number1-3
Publication statusPublished - 27 Nov 2000
Externally publishedYes

Abstract

Multicollision-induced dissociation (MCID) has been applied to gold clusters, Au(n)/2+ (n = 7-35) and Au(n)/3+ (n = 19-35) stored in a Penning trap. By application of ion cyclotron resonance excitation and pulses of argon collision gas, fragmentation yields have been measured as a function of the clusters' kinetic energy. The corresponding dissociation energies have been determined by use of the impulsive collision theory and the quantum Rice-Ramsperger-Kassel (RRK) model for the energy transfer to internal cluster modes and for delayed dissociation, respectively. As compared to earlier measurements of singly charged gold clusters the variation of the stability as a function of cluster size is reduced. The doubly charged clusters show an odd-even effect that is reversed with respect to that of singly charged gold clusters. This is similar to findings by electron impact ionization/dissociation and in line with the expectations for simple metal clusters, where the structure and stability is governed by the number of atomic valence electrons. However, no cluster sizes of particular stability (magic numbers) are observed. In general, the dissociation energy of small clusters is smaller than that of the larger ones because of the influence of the Coulomb force. In contrast to the singly charged gold clusters the odd-even effect of Au(n)/2+ disappears at small cluster sizes n < 11; explained as a consequence of the dominance of trimer fission in that size region. (C) 2000 Elsevier Science B.V.

Keywords

    Cluster fission, Collision induced dissociation, Dissociation energies, Gold clusters, Multiply charged clusters

ASJC Scopus subject areas

Cite this

Multicollision-induced dissociation of multiply charged gold clusters, Au(n)/2+, n = 7-35, and Au(n)/3+, n = 19-35. / Ziegler, J.; Dietrich, G.; Krückeberg, S. et al.
In: International Journal of Mass Spectrometry, Vol. 202, No. 1-3, 27.11.2000, p. 47-54.

Research output: Contribution to journal › Article › Research › peer review

Ziegler J, Dietrich G, Krückeberg S, Lützenkirchen K, Schweikhard L, Walther C. Multicollision-induced dissociation of multiply charged gold clusters, Au(n)/2+, n = 7-35, and Au(n)/3+, n = 19-35. International Journal of Mass Spectrometry. 2000 Nov 27;202(1-3):47-54. doi: 10.1016/S1387-3806(00)00207-4
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title = "Multicollision-induced dissociation of multiply charged gold clusters, Au(n)/2+, n = 7-35, and Au(n)/3+, n = 19-35",
abstract = "Multicollision-induced dissociation (MCID) has been applied to gold clusters, Au(n)/2+ (n = 7-35) and Au(n)/3+ (n = 19-35) stored in a Penning trap. By application of ion cyclotron resonance excitation and pulses of argon collision gas, fragmentation yields have been measured as a function of the clusters' kinetic energy. The corresponding dissociation energies have been determined by use of the impulsive collision theory and the quantum Rice-Ramsperger-Kassel (RRK) model for the energy transfer to internal cluster modes and for delayed dissociation, respectively. As compared to earlier measurements of singly charged gold clusters the variation of the stability as a function of cluster size is reduced. The doubly charged clusters show an odd-even effect that is reversed with respect to that of singly charged gold clusters. This is similar to findings by electron impact ionization/dissociation and in line with the expectations for simple metal clusters, where the structure and stability is governed by the number of atomic valence electrons. However, no cluster sizes of particular stability (magic numbers) are observed. In general, the dissociation energy of small clusters is smaller than that of the larger ones because of the influence of the Coulomb force. In contrast to the singly charged gold clusters the odd-even effect of Au(n)/2+ disappears at small cluster sizes n < 11; explained as a consequence of the dominance of trimer fission in that size region. (C) 2000 Elsevier Science B.V.",
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T1 - Multicollision-induced dissociation of multiply charged gold clusters, Au(n)/2+, n = 7-35, and Au(n)/3+, n = 19-35

AU - Ziegler, J.

AU - Dietrich, G.

AU - Krückeberg, S.

AU - Lützenkirchen, K.

AU - Schweikhard, L.

AU - Walther, Clemens

N1 - Funding information: This work was financed in part by the Deutsche Forschungsgemeinschaft (Schw 401/7) and also supported by the Materials Science Research Center at Mainz and the Fonds der Chemischen Industrie. Furthermore, S.K. thanks the Studienstiftung des deutschen Volkes, and C.W. thanks the Graduiertenkolleg Physik und Chemie Supramolekularer Systeme for their support.

PY - 2000/11/27

Y1 - 2000/11/27

N2 - Multicollision-induced dissociation (MCID) has been applied to gold clusters, Au(n)/2+ (n = 7-35) and Au(n)/3+ (n = 19-35) stored in a Penning trap. By application of ion cyclotron resonance excitation and pulses of argon collision gas, fragmentation yields have been measured as a function of the clusters' kinetic energy. The corresponding dissociation energies have been determined by use of the impulsive collision theory and the quantum Rice-Ramsperger-Kassel (RRK) model for the energy transfer to internal cluster modes and for delayed dissociation, respectively. As compared to earlier measurements of singly charged gold clusters the variation of the stability as a function of cluster size is reduced. The doubly charged clusters show an odd-even effect that is reversed with respect to that of singly charged gold clusters. This is similar to findings by electron impact ionization/dissociation and in line with the expectations for simple metal clusters, where the structure and stability is governed by the number of atomic valence electrons. However, no cluster sizes of particular stability (magic numbers) are observed. In general, the dissociation energy of small clusters is smaller than that of the larger ones because of the influence of the Coulomb force. In contrast to the singly charged gold clusters the odd-even effect of Au(n)/2+ disappears at small cluster sizes n < 11; explained as a consequence of the dominance of trimer fission in that size region. (C) 2000 Elsevier Science B.V.

AB - Multicollision-induced dissociation (MCID) has been applied to gold clusters, Au(n)/2+ (n = 7-35) and Au(n)/3+ (n = 19-35) stored in a Penning trap. By application of ion cyclotron resonance excitation and pulses of argon collision gas, fragmentation yields have been measured as a function of the clusters' kinetic energy. The corresponding dissociation energies have been determined by use of the impulsive collision theory and the quantum Rice-Ramsperger-Kassel (RRK) model for the energy transfer to internal cluster modes and for delayed dissociation, respectively. As compared to earlier measurements of singly charged gold clusters the variation of the stability as a function of cluster size is reduced. The doubly charged clusters show an odd-even effect that is reversed with respect to that of singly charged gold clusters. This is similar to findings by electron impact ionization/dissociation and in line with the expectations for simple metal clusters, where the structure and stability is governed by the number of atomic valence electrons. However, no cluster sizes of particular stability (magic numbers) are observed. In general, the dissociation energy of small clusters is smaller than that of the larger ones because of the influence of the Coulomb force. In contrast to the singly charged gold clusters the odd-even effect of Au(n)/2+ disappears at small cluster sizes n < 11; explained as a consequence of the dominance of trimer fission in that size region. (C) 2000 Elsevier Science B.V.

KW - Cluster fission

KW - Collision induced dissociation

KW - Dissociation energies

KW - Gold clusters

KW - Multiply charged clusters

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DO - 10.1016/S1387-3806(00)00207-4

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VL - 202

SP - 47

EP - 54

JO - International Journal of Mass Spectrometry

JF - International Journal of Mass Spectrometry

SN - 1387-3806

IS - 1-3

ER -