0000000000956333

AUTHOR

A.-h. Evensen

showing 2 related works from this author

Selective laser ionization of radioactive Ni-isotopes

1997

Abstract A chemically selective laser ion source based on resonance ionization of atoms in a hot cavity has been applied in the study of Ni-isotopes at the CERN-ISOLDE on-line isotope separator. Laser ionization enhanced the yields of long-lived Ni-isotopes almost four orders of magnitude when compared to the yields obtained with the surface ionization mode of the source. As a result, high yields of long-lived Ni-isotopes were obtained. Separation efficiencies of 0.3 and 0.8% were obtained for Ni produced in uranium-carbide, produced from uranium-di-pthalocyanine, and Ta-foil targets, respectively. Ni was found to be released very slowly from the present target and ion source combination.

Nuclear and High Energy PhysicsChemical ionizationMatrix-assisted laser desorption electrospray ionizationChemistryRadiochemistryAnalytical chemistryThermal ionizationIon sourceAtmospheric-pressure laser ionizationIonizationPhysics::Atomic PhysicsNuclear ExperimentInstrumentationElectron ionizationAmbient ionizationNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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A new pulsed release method for element selective production of neutron rich isotopes near 208Pb

1998

Abstract A new method to reduce the isobaric contamination problem for the production of neutron rich Bi, Pb and Tl nuclei at on-line mass separators, based on the pulsed release of these radioactive species, is presented. The results of a feasibility study are reported.

Nuclear and High Energy PhysicsIsotopeChemistryRadiochemistryIsobaric processNeutronContaminationInstrumentationNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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