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Progress on the chemical separation of fission fragments from 236Np produced by proton irradiation of natural uranium target

Larijani, Cyrus Kouroush, Jerome, SM, Lorusso, G, Ivanov, P, Russell, B, Pearce, AK and Regan, Patrick (2017) Progress on the chemical separation of fission fragments from 236Np produced by proton irradiation of natural uranium target Radiation Physics and Chemistry, 140. pp. 480-486.

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Abstract

The aim of the current work is to develop and validate a radiochemical separation scheme capable of separating both 236gNp and 236Pu from a uranium target of natural isotopic composition (~1 g uranium) and ~200 MBq of fission decay products. A target containing 1.2 g of UO2 was irradiated with a beam of 25 MeV protons with a typical beam current of 30 μA for 19 h in December 2013 at the University of Birmingham Cyclotron facility. Using literature values for the production cross-section for fusion of protons with uranium targets, we estimate that an upper limit of approximately 250 Bq of activity from the 236Np ground state was produced in this experiment. Using a radiochemical separation scheme, Np and Pu fractions were separated from the produced fission decay products, with analyses of the target-based final reaction products made using Inductively Couple Plasma Mass Spectrometry (ICP-MS) and high-resolution α particle and γ-ray spectrometry.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Larijani, Cyrus Kouroushc.larijani@surrey.ac.ukUNSPECIFIED
Jerome, SMUNSPECIFIEDUNSPECIFIED
Lorusso, GUNSPECIFIEDUNSPECIFIED
Ivanov, PUNSPECIFIEDUNSPECIFIED
Russell, BUNSPECIFIEDUNSPECIFIED
Pearce, AKUNSPECIFIEDUNSPECIFIED
Regan, PatrickP.Regan@surrey.ac.ukUNSPECIFIED
Date : 3 February 2017
Identification Number : 10.1016/j.radphyschem.2017.02.004
Copyright Disclaimer : © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Chemical separations Fission fragments Mass chains and natural uranium
Depositing User : Symplectic Elements
Date Deposited : 08 Mar 2017 18:33
Last Modified : 31 Oct 2017 19:11
URI: http://epubs.surrey.ac.uk/id/eprint/813723

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