%A"Bonifacio M, J [Universidad Autonoma del Estado de Mexico. Facultad de Quimica. Toluca (Mexico)]" %D1991 %I; Universidad Autonoma del Estado de Mexico. Facultad de Quimica. Toluca (Mexico) %2 %J[] %K44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS, ALPHA SPECTROSCOPY, CARNOTITE, EDTA, ELECTRODEPOSITION, ELECTROLYSIS, GAMMA SPECTRA, ION EXCHANGE, ISOTOPE SEPARATION, MULTI-CHANNEL ANALYZERS, POLONIUM ISOTOPES, RADIATION DETECTORS, RADIUM 226, RADON 222, SPECIFICATIONS %PMedium: ED; Size: 65 p. %TDesign and construction of a system to determine Radon-222 through alpha spectroscopy; Diseno y construccion de un sistema para determinar Radon-222 mediante espectroscopia alfa %XThe purpose of this work consists in the design a radon-222 gas measurement system utilizing a surface barrier detector with the objective to obtain a more accurate measurement for this isotope through an alpha particle spectrum and so to address as to avoid the activity influence of the descendants of short half-life, which are too beta particles emitters, already other methods it must be correction series to obtain the real value of radon activity. Here are presented the general properties properties of radon, the experimental part description indicating the design to measure the radon-222 gas and its parts, as well as too the standard separation of radium-226 starting from carnotite mineral. Finally, it is presented the results obtained with a discussion about it. (Author) results obtained with a discussion about it. (Author) %0Thesis/Dissertation %NINIS-MX-071;Other: ON: DE98633170; TRN: MX9800080045691 %1 %CMexico %Rhttps://doi.org/ Other: ON: DE98633170; TRN: MX9800080045691 MXN %GSpanish