2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/230533Carbon-tetrafluoride (CF4) is used as a counting gas in particle detectors, but some of its properties that are of interest for large time-projection chambers are not well known. We measure the mean energy, which is proportional to the diffusion coefficent, and the attentuation coefficient of electron propagation in CF4 gas using a 10-liter dark matter detector prototype of the DMTPC project.12 pages, 8 figuresInstrumentation and Detectorstext