Use of neutron reflection method to assay nuclear materials in solutions

Neutron reflection methods are used in the chemical analysis of bulk sample s, especially for the determination of contents in hydrogenous solutions. I n these techniques albedo is measured by measuring either the activation of a foil, or count rate from a neutron detector. In the present paper Monte Carlo simulations are performed using this method for the possibility of de tecting inadvertent criticality in the reprocessing plants and also estimat ion of B-10 in heavy water, which is used as a moderator in PHWRs. (C) 2001 Elsevier Science Ltd. All rights reserved.