Carbon cluster ion formation in a direct laser vaporization source

Pradel, Pierre; Monchicourt, P.; Laucagne, J.J.; Perdrix, M.; Watel, G.

doi:10.1016/0009-2614(89)87362-2

Cited by 32 publications

(12 citation statements)

References 15 publications

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“…It is well known that C 3 is a stable neutral fragment in the decomposition of small carbon clusters [10,[20][21][22][23][24]. In addition, C 3 is known to be dominantly formed when the carbon clusters are heated [25,26]. Under the condition where C 3 is formed, we have confirmed that Nb n C 3k + (k = 1, 2) is more abundantly observable after photoionization at 215 nm than the other Nb n C m + clusters in the present study.…”

Section: Introductionsupporting

confidence: 92%

“…In addition, C 3 is known to be dominantly formed when the carbon clusters are heated above ∼2000 K [25,26]. Hence, it is reasonable to consider that C 3 is formed in high abundance during the fragmentation process of charged and neutral carbon clusters following laser ablation of the graphite target, and that niobium atoms/clusters are bound to C 3 when they aggregate in the gas phase as…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Structural rearrangement in gas phase niobium carbide clusters, Nb C3 and Nb C6

Miyajima

Sobhan

Hardy

et al. 2015

Chemical Physics Letters

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Section: Introductionsupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Structural rearrangement in gas phase niobium carbide clusters, Nb C3 and Nb C6

Miyajima

Sobhan

Hardy

et al. 2015

Chemical Physics Letters

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“…One striking feature of the abundances for both positive and negative ions is the fact that at masses higher than those corresponding to C4a the spectrum is the same for all the PAH studied (Linemann et al 1989;Mele et al 1989). Similar mass spectra have been observed in laser ablation of pure graphite (Pradel et al 1989).…”

Section: Polycyclic Aromatic Hydrocarbonssupporting

confidence: 80%

Laser degradation of pollutants: Polychlorobiphenyls, triazines and polycyclic aromatic hydrocarbons

et al. 1993

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Visible and UV radiations have been widely used to induce chemical reactions in gases, liquids and heterogeneous systems before the development of commercial lasers for use in these regions. The availability of laser sources has allowed extensive studies on chemical reactions and time-resolved techniques to investigate the mechanism of excitation and relaxation of organic molecules in gaseous and condensed phases. A very important field recently investigated is the laser-induced decomposition of organic molecules, present either as gas or as major constituents of or traces in solutions, with the aim of removing toxic species from chemically hazardous wastes. An investigation of laserinduced decomposition of important categories of pollutants such as polychlorobiphenyls, herbicides (triazines) and polycyclic aromatic hydrocarbons will be reported here. The experiments demonstrate the effectiveness of laser-induced techniques for the decomposition of these compounds. In most cases photofragmentation leads to the formation of non-toxic products in very high yields.

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“…Since the magic numbers, mentioned above, are sensitive to reaction with hydrogen, we think that the results of Bloomfield et al [14], where both positively and negatively charged clusters were recorded, support the hypothesis that the magic numbers originate from low ionization potentials, especially in view of the ionization potentials as determined by Bach et al [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Discussionsupporting

confidence: 59%