Protium-deuterium separation with the preparative gas chromatographic system at JET

The design of the preparative gas chromatographic (GC) hydrogen isotope separation system at JET, the process of displacement chromatography and the results of the commissioning phase with inactive gas mixtures of protium and deuterium are presented. The GC system meets fully the specifications for isotope separation. Protium and deuterium concentrations in the Pd filled column can be calculated by means of a simple program which simulates the gas chromatographic process.