Standard Test Method for Measuring Neutron Fluence Rates by Radioactivation of Cobalt and Silver
< div class=" SectionLevel2" > < p class=" subsec1 cdone2" > < span class=" Head3 cdone" > 1.1< / span> & #x00a0 This test method covers a suitable means of obtaining the thermal neutron fluence rate, or fluence, in well moderated nuclear reactor environments where the use of cadmium, as a thermal neutron shield as described in Test Method < span class=" Body-link1 cdone" > E262< / span> , is undesirable because of potential spectrum perturbations or of temperatures above the melting point of cadmium.
< span class=" note cdone" style=" text-transform: uppercase " > Note 1:< / span> & #x00a0 < span class=" note cdone" > Westcott fluence rate < img align=" absmiddle" src=" http:/ / www.astm.org/ HTTP/ IMAGES/ E0481-16_1.gif" alt=" Equation E0481-16_1" / > < / span>
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