RESUMO
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.
Assuntos
Poluentes Radioativos do Ar/análise , Poluição do Ar em Ambientes Fechados/análise , Exposição Ambiental , Manufaturas/toxicidade , Monitoramento de Radiação/métodos , Dióxido de Silício/toxicidade , Poluentes Radioativos do Ar/toxicidade , Poluição do Ar em Ambientes Fechados/efeitos adversos , Simulação por Computador , Raios gama , Habitação , Humanos , Radioisótopos de Potássio/análise , Radioisótopos de Potássio/toxicidade , Doses de Radiação , Monitoramento de Radiação/instrumentação , Espectrometria gama/instrumentação , Espectrometria gama/métodos , Tório/análise , Tório/toxicidade , Estados Unidos , Urânio/análise , Urânio/toxicidadeRESUMO
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.
