Target-ion source unit ionization efficiency measurement by a method of stable ion beam implantation |
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Authors: | V N Panteleev A E Barzakh D V Fedorov P L Molkanov F V Moroz S Yu Orlov Yu M Volkov |
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Institution: | (1) Petersburg Nuclear Physics Institute RAS, Leningrad district, 188350 Gatchina, Russia |
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Abstract: | At the IRIS facility a rather precise method of the
target-ion source unit ionization efficiency measurement has been
developed. The method exploits an off-line
mass-separator for the implantation of the ion beams of selected stable isotopes into a tantalum foil placed inside a Faraday
cup
in the focal plane of the mass-separator. After the
implantation of the required amount of the investigated species, tantalum foil has been inserted into
the volume of the target-ion source unit prepared for the on-line utilization at the IRIS
on-line separator. The first tests have ensured the ionization efficiency values
(90±10)% for Rb and (85±10)% for Cs in the empty combined
target-ion source unit, which was
used as a reference one. For the target-ion source unit with UC target material inside the measured value of the ionization
efficiency of Rb was (52±20)%. |
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Keywords: | 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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