Capture cross section of 242Pu

Abstract
The neutron capture cross section of 242Pu has been measured by determining the 243Am product. Samples were irradiated in a neutron flux having essentially a Maxwellian distribution defined by the temperature (37.5 °C) of a water annulus around the sample tube. Plutonium and americium were separated from each other chemically and their concentrations and isotopic compositions obtained by low-geometry α counting and α spectrometry. A value for gσ0 of 18.7 ± 0.7 b was obtained where g represents the deviation from 1/v behavior.

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