RESUMEN
The gamma radiation emitted from a variety of commercial decorative granites available for use in U.S. homes has been measured with portable survey meters as well as an NaI(Th) gamma spectrometer. The (40)K, U-nat, and (232)Th activity concentrations were determined using a full-spectrum analysis. The dose rates that would result from two different arrangements of decorative granite slabs as countertops were explored in simulations involving an adult anthropomorphic phantom.
Asunto(s)
Contaminantes Radiactivos del Aire/análisis , Contaminación del Aire Interior/análisis , Exposición a Riesgos Ambientales , Materiales Manufacturados/toxicidad , Monitoreo de Radiación/métodos , Dióxido de Silicio/toxicidad , Contaminantes Radiactivos del Aire/toxicidad , Contaminación del Aire Interior/efectos adversos , Simulación por Computador , Rayos gamma , Vivienda , Humanos , Radioisótopos de Potasio/análisis , Radioisótopos de Potasio/toxicidad , Dosis de Radiación , Monitoreo de Radiación/instrumentación , Espectrometría gamma/instrumentación , Espectrometría gamma/métodos , Torio/análisis , Torio/toxicidad , Estados Unidos , Uranio/análisis , Uranio/toxicidadRESUMEN
E896 has measured Lambda production in 11.6A GeV/c Au-Au collisions over virtually the whole rapidity phase space. The midrapidity p(t) distributions have been measured for the first time at this energy and appear to indicate that the Lambda hyperons have different freeze-out conditions than protons. A comparison with the relativistic quantum molecular dynamics model shows that while there is good shape agreement at high rapidity the model predicts significantly different slopes of the m(t) spectra at midrapidity. The data, where overlap occurs, are consistent with previously reported measurements.