Integrated target-ion source unit for on-line production of radioactive short-lived isotopes |
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Authors: | Email author" target="_blank">V?N?PanteleevEmail author A?E?Barzakh D?V?Fedorov M?Menna F?V?Moroz Yu?M?Volkov |
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Institution: | (1) PNPI RAS, 188300 Gatchina, Leningrad district, Russia;(2) INFN-LNS, via S. Sofia 44, 95123 Catania, Italy |
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Abstract: | A new version of integrated target-ion source unit (ionising target) has been developed for the on-line production of radioactive
single-charged ions. The target is able to withstand temperatures up to 2500 °C and acts also as an ion source of the surface and laser ionisation. Off-line and on-line experiments with the ionising target,
housing tantalum foils as a target material, have been carried out at the IRIS (Investigation of Radioactive Isotopes on Synchrocyclotron)
facility. The off-line surface ionisation efficiency measured for stable atoms of Li, Rb and Cs was correspondingly 6% , 40%
and 55% at the target temperature of 2000 °C and 3-10% for atoms of rare-earth elements Sm, Eu, Tm and Yb at a temperature of 2200 °C. The off-line measured values of the ionisation efficiency for stable Gd and Eu atoms by the laser beam ionisation inside
the target were 1% and 7%, respectively. The radioactive beam intensities of neutron-deficient rare-earth nuclides from Eu
to Lu produced by the integrated target-ion source unit have been measured at a temperature of 2500 °C. The results of the integrated target-ion source unit use for on-line laser resonance ionisation spectroscopy study of neutron-deficient
Gd isotopes have been also presented. |
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Keywords: | 25 40 Sc Spallation reactions 28 60 +s Isotope separation and enrichment 29 25 Ni Ion sources: positive and negative 29 25 Rm Sources of radioactive nuclei |
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