T. Mootz et al., INVESTIGATIONS ON THE MCS(2)(-ION MASS-SPECTROMETRY() FORMATION IN SECONDARY), International journal of mass spectrometry and ion processes, 156(1-2), 1996, pp. 1-10
Citations number
26
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
The formation of MCs(2)(+) secondary ions under Cs+ bombardment of sev
eral elemental surfaces M was studied. In conjunction with their respe
ctive mass signals the energy distributions of the secondary MCs(+), C
s+, Cs-2(+) ions and the neutral M(0) atoms corroborate an MCs(2)(+) f
ormation mechanism via recombination of an already built MCs(0) molecu
le with a Cs+ ion. Evaluation of the mass signals reveals that the spa
tial and temporal correlation between two partners forming the MCs(2)(
+) molecule is strongly enhanced in comparison with the respective cor
relation of M(0) and Cs+, which is generally agreed to form the MCs(+)
molecule. The surprisingly broad energy distributions of Cs-2(+) are
determined by the broad distribution of the neutral M(0) atoms which a
re essentially implicated in the Cs-2(+) formation process.