Observation of small long-lived diatomic dications BeH2+ and BeD2+

Klaus Franzreb; Richard C. Sobers; Jan Lörinčik; Peter Williams

doi:10.1103/PhysRevA.71.024701

Observation of small long-lived diatomic dications BeH2+ and BeD2+

Klaus Franzreb, Richard C. Sobers, Jan Lörinčik, Peter Williams

Molecular Sciences, School of (SMS)

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11 Scopus citations

Abstract

The diatomic gas-phase dications BeH2+ and BeD2+ with only three electrons have been produced by Ar+ sputtering of a Be metal foil with exposure of the surface to toluene (C7 H8) or water (a mixture of D2O and H2O) vapor. BeH2+ and BeD2+ were observed and unambiguously identified by (mass)/(charge) determination in a magnetic sector mass spectrometer. They survived flight times of ∼4 μs. These observations confirm the discovery of BeD2+ in an atom-probe experiment by Barofsky and Müller [Surf. Sci. 10, 177 (1968)] and support theoretical predictions of long-lived metastable BeH2+.

Original language	English (US)
Article number	024701
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	71
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.71.024701
State	Published - Feb 1 2005

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Observation of small long-lived diatomic dications BeH2+ and BeD2+",

abstract = "The diatomic gas-phase dications BeH2+ and BeD2+ with only three electrons have been produced by Ar+ sputtering of a Be metal foil with exposure of the surface to toluene (C7 H8) or water (a mixture of D2O and H2O) vapor. BeH2+ and BeD2+ were observed and unambiguously identified by (mass)/(charge) determination in a magnetic sector mass spectrometer. They survived flight times of ∼4 μs. These observations confirm the discovery of BeD2+ in an atom-probe experiment by Barofsky and M{\"u}ller [Surf. Sci. 10, 177 (1968)] and support theoretical predictions of long-lived metastable BeH2+.",

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AU - Franzreb, Klaus

AU - Sobers, Richard C.

AU - Lörinčik, Jan

AU - Williams, Peter

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Observation of small long-lived diatomic dications BeH2+ and BeD2+

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