Investigating the dissociation energies of niobium and vanadium oxide clusters synthesized by ion sputtering

Statistical mechanism of the formation of the energy spectra of sputtered molecular clusters

“…The cluster ion acquires translational and internal energy (vibrational and rotational) sufficient Si O 3 7 − for inverse decay [4][5][6][7][8][9][10], as it occurs during the for mation of complex ions in bimolecular gas phase reac tions [11,12]. Thus, according to [4], the nature of Oand Si -ions and "magic" clusters is signifi cantly different: the first ones are primarily knocked out particles while the second ones are products of recombination reactions during processes of combina torial synthesis.…”

“…The energy spectra of cluster ions were stud ied using a double focusing secondary ion mass spec trometer with reverse geometry [5] according to the technique described in [4,[6][7][8].…”

Decay rate constants of sputtered vanadium oxide clusters

“…The emissions and fragmentation of sputtered were investigated in an inverse geometry double focusing secondary ion mass spectrometer [3] using the procedure described in [4][5][6][7]. clusters were generated by bombarding V targets with Xe + ions at an angle of 45° while the surface was scanned over a 1.5 × 1.5 mm field and O 2 was bled into the chamber up to pressures of 4-5 × 10 -3 Pa.…”

“…A spread of excitation energies δN/δE B = f(E B ) [8,9] was observed in the sputtered clusters, which were found to decay along the route from target to detector [3][4][5][6][7]. Fragmentation study relies on the availability of zones in the experimental setup [3] in which direct registration of secondary ion decay is possible in various time spans.…”

“…Average decay rate constants k and the correspond ing average lifetimes τ ≡ 1/k for the most intense decay channels of and ions, calculated using (4)- (6), are presented in the table.…”