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)|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - Feb 1 2005|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics