Metastable dissociation dynamics of molecular cluster ions

H. Shinohara; H. Sato; F. Misaizu; K. Ohashi; N. Nishi

doi:10.1007/BF01543972

Metastable dissociation dynamics of molecular cluster ions

H. Shinohara, H. Sato, F. Misaizu, K. Ohashi, N. Nishi

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4 Citations (Scopus)

Abstract

Metastable uni-cluster dissociation for several hydrogen-bonded and van der Waals cluster ions are observed via resonance-enhanced two-photon ionization reflectron time-of-flight (TOF) mass spectrometry. All of the cluster ions studied show evaporation of a single molecule from the respective parent cluster ions as dominant metastable decay processes. Furthermore, the averaged metastable evaporation rate constants (k_evap) of these cluster ions in a fixed time domain of 0.2-50 μs are obtained by analyzing the relative intensity of metastable ion peaks due to evaporation in the acceleration and the field-free drift regions of the TOF mass spectrometer. An intensity anomaly in some of the observed metastable ion peaks, indicative of magic number stability of the cluster ion, is also presented.

Original language	English
Pages (from-to)	197-200
Number of pages	4
Journal	Zeitschrift für Physik D Atoms, Molecules and Clusters
Volume	20
Issue number	1
DOIs	https://doi.org/10.1007/BF01543972
Publication status	Published - Mar 1991
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1007/BF01543972

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abstract = "Metastable uni-cluster dissociation for several hydrogen-bonded and van der Waals cluster ions are observed via resonance-enhanced two-photon ionization reflectron time-of-flight (TOF) mass spectrometry. All of the cluster ions studied show evaporation of a single molecule from the respective parent cluster ions as dominant metastable decay processes. Furthermore, the averaged metastable evaporation rate constants (kevap) of these cluster ions in a fixed time domain of 0.2-50 μs are obtained by analyzing the relative intensity of metastable ion peaks due to evaporation in the acceleration and the field-free drift regions of the TOF mass spectrometer. An intensity anomaly in some of the observed metastable ion peaks, indicative of magic number stability of the cluster ion, is also presented.",

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year = "1991",

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T1 - Metastable dissociation dynamics of molecular cluster ions

AU - Shinohara, H.

AU - Sato, H.

AU - Misaizu, F.

AU - Ohashi, K.

AU - Nishi, N.

PY - 1991/3

Y1 - 1991/3

N2 - Metastable uni-cluster dissociation for several hydrogen-bonded and van der Waals cluster ions are observed via resonance-enhanced two-photon ionization reflectron time-of-flight (TOF) mass spectrometry. All of the cluster ions studied show evaporation of a single molecule from the respective parent cluster ions as dominant metastable decay processes. Furthermore, the averaged metastable evaporation rate constants (kevap) of these cluster ions in a fixed time domain of 0.2-50 μs are obtained by analyzing the relative intensity of metastable ion peaks due to evaporation in the acceleration and the field-free drift regions of the TOF mass spectrometer. An intensity anomaly in some of the observed metastable ion peaks, indicative of magic number stability of the cluster ion, is also presented.

AB - Metastable uni-cluster dissociation for several hydrogen-bonded and van der Waals cluster ions are observed via resonance-enhanced two-photon ionization reflectron time-of-flight (TOF) mass spectrometry. All of the cluster ions studied show evaporation of a single molecule from the respective parent cluster ions as dominant metastable decay processes. Furthermore, the averaged metastable evaporation rate constants (kevap) of these cluster ions in a fixed time domain of 0.2-50 μs are obtained by analyzing the relative intensity of metastable ion peaks due to evaporation in the acceleration and the field-free drift regions of the TOF mass spectrometer. An intensity anomaly in some of the observed metastable ion peaks, indicative of magic number stability of the cluster ion, is also presented.

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Metastable dissociation dynamics of molecular cluster ions

Abstract

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