Development toward a double focusing isotopic separator for noble gas isotope enrichment
Langue
en
Article de revue
Ce document a été publié dans
Journal of Mass Spectrometry. 2016-10, vol. 51, n° 10, p. 908-913
Wiley-Blackwell
Résumé en anglais
A double focusing sector field mass filter used in Nier-Johnson geometry has been built in order to perform Kr isotope enrichment for 81 Kr and 85 Kr isotopes. The principle consists in implanting Kr + ions accelerated at ...Lire la suite >
A double focusing sector field mass filter used in Nier-Johnson geometry has been built in order to perform Kr isotope enrichment for 81 Kr and 85 Kr isotopes. The principle consists in implanting Kr + ions accelerated at 7 keV in Al foils after separation using the magnetic sector. A specific ion source has been designed capable of generating high Kr + ion beams (>0.5 μA) to transfer into the collecting Al foils in 3 to 5 h significant fractions of large Kr samples (10 15 to 10 16 atoms) initially introduced in the instrument. Implanted Kr isotopes can be further selectively released from the Al foil by surface ablation using an infrared laser beam. Implantation yields and enrichment factors are measured using a conventional mass spectrometer.< Réduire
Mots clés en anglais
noble gases
isotope enrichment
ion implantation
mass spectrometry
Origine
Importé de halUnités de recherche