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Dissociation of doubly charged alkali metal clusters
Author(s) -
López J. M.,
Alonso J. A.,
Garcias F.,
Barranco M.
Publication year - 1992
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19925040405
Subject(s) - jellium , dissociation (chemistry) , alkali metal , atomic physics , excited state , thomas–fermi model , fission , density functional theory , kinetic energy , materials science , physics , molecular physics , electron , chemistry , nuclear physics , quantum mechanics , neutron
Abstract We have studied the competition experimentally observed between fission and neutral atom evaporation, as dissociation channels of excited doubly charged sodium clusters, using the Density Functional Theory and the jellium model. The fission barrier has been obtained from an Extended Thomas‐Fermi calculation including density gradient corrections to the kinetic energy of the electronic cloud. We discuss the influence of the coefficient of the density gradient term on the barrier height.