Non-destructive method for determining neutron exposure and...

Details Non-destructive method for determining neutron exposure and... Non-destructive method for determining neutron exposure and...

G - Physics

01

T

358/5

G01T 1/167 (2006.01) G01N 23/222 (2006.01) G01T 1/36 (2006.01) G21C 17/00 (2006.01)

Patent

CA 1237829

S-60,734 ABSTRACT OF THE DISCLOSURE A non-destructive method for determination of neutron exposure and constituent concentrations in an object, such as a reactor pressure vessel, is based on the observation of characteristic gamma-rays emitted by activation products in the object by using a unique continuous gamma-ray spectometer. The spectrometer views the object through appropriate collimators to determine the absolute emission rate of these characteristic gamma-rays, thereby ascertain- ing the absolute activity of given activation products in the object. These data can then be used to deduce the spatial and angular dependence of neutron exposure or the spatial constituent concentrations at regions of interest within the object.

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