Electron-impact double ionization of copper has been investigated in the modified double-binary-encounter model. For the first time, Hartree-Fock velocity distribution has been used while considering ejection of both electrons from the target in binary-encounter calculations. Contribution of Auger emission, which is considered to be dominant at high impact energies, is also included in the calculations. The present results have been compared with the recent experimental measurement of Bolorizadeh et al. and semi-empirical calculations of Belenger et al. The semi-empirical calculations are found to overestimate the cross-sections. The present results are in satisfactory agreement with the experimental observations.Istražili smo dvostruku ionizaciju bakra udarom elektrona u izmijenjenom modelu dvojnih binarnih sudara. Prvi se puta u razmatranjima izbacivanja dvaju elektrona iz mete u binarnim sudarima primjenjuje Hartree-Fockova raspodjela brzina. Doprinos Augerove emisije, koji dominira na višim udarnim energijama, također smo uključili u račun. Dobiveni se ishodi računa uspoređuju s nedavnim mjerenjima Bolorizadeha i sur. i poluempirijskim računima Belengera i sur. Nalazimo da poluempirijski računi precjenjuju udarne presjeke. Naši su ishodi računa u dobrom skladu s eksperimentalnim vrijednostima
