Femtosecond ionization and Coulomb explosion of small transition metal carbide clusters

[Display omitted] ► Strong-field ionization of small group 5 metal carbides explored. ► More efficient Coulomb explosion observed from VV due to the larger mass of tantalum, the slower cluster expansion times, and lower ionization potentials of large atoms. Minimum laser intensities required for the...

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Bibliographic Details
Published in:Chemical physics letters 2012-09, Vol.547, p.13-20
Main Authors: Ross, Matt W., Castleman, A.W.
Format: Article
Language:English
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Summary:[Display omitted] ► Strong-field ionization of small group 5 metal carbides explored. ► More efficient Coulomb explosion observed from VV due to the larger mass of tantalum, the slower cluster expansion times, and lower ionization potentials of large atoms. Minimum laser intensities required for the onset of each atomic charge state of V, Nb, and Ta were found to be nearly identical between metal carbides and previously observed group 5 metal oxide clusters indicating electron delocalization within the cluster. Ionization enhancement is explored by comparison to semi-classical tunneling theory.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2012.07.055