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1. (WO2018001466) METHOD OF PRODUCING A FRACTION CONTAINING XE-133 RADIOISOTOPES, FRACTION CONTAINING XE-133 RADIOISOTOPES

Pub. No.:    WO/2018/001466    International Application No.:    PCT/EP2016/065030
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Wed Jun 29 01:59:59 CEST 2016
IPC: G21G 1/00
Applicants: INSTITUT NATIONAL DES RADIOÉLÉMENTS
Inventors: FAGA, Philippo
Title: METHOD OF PRODUCING A FRACTION CONTAINING XE-133 RADIOISOTOPES, FRACTION CONTAINING XE-133 RADIOISOTOPES
Abstract:
The present invention concerns a method of producing pure xenon radioisotopes, comprising the steps of basic dissolution of highly enriched uranium targets, achieving a gaseous phase containing radioisotopes of xenon, isolating the gaseous phase, and recovering a fraction containing the xenon radioisotopes, characterized in that the isolation comprises a passing said gaseous phase, in a U-shaped tube immersed in liquid nitrogen contained in a shielded container, through filings of stainless steel, separating said xenon radioisotopes from said gaseous phase by liquefying the xenon radioisotopes by means of said cooled stainless steel filings which capture the xenon radioisotopes by condensation, collecting the liquefied xenon radioisotopes and a gas phase depleted of the xenon radioisotopes, and recovering the xenon radioisotopes in gaseous form by gradually reheating to ambient temperature.