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In the paper we propose and test a "gel-drying" method of obtaining porous oxide glasses in Molecular Dynamics (MD) simulations. The simulation is started with low (screened) values of ionic charges. Then, the charges are gradually increased (to mimic the gradual elimination of a polar solvent) up to full ionic charges (a completely dry gel). This computational trick is applied to produce a porous PbSiO 3 system. The structure of the resulting low-density samples is analysed in detail. Then,doi:10.12921/cmst.2004.10.01.21-38 fatcat:ativoqygkrhi7liaqbnxvzoogu