The Role of Diffusion in ISOL Targets for the Production of Radioactive Ion Beams

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The Role of Diffusion in ISOL Targets for the Production of Radioactive Ion Beams

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dc.contributor.author Beyer,G J
dc.contributor.author Hagebo,E
dc.contributor.author Novgorodov,A F
dc.contributor.author Ravn,H L
dc.date.accessioned 2008-08-13T04:32:40Z
dc.date.available 2008-08-13T04:32:40Z
dc.date.issued 2002-11-07
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/639
dc.description.abstract On line isotope separation techniques (ISOL) for production of ion beams of short-lived radionuclides require fast separation of nuclear reaction products from irradiated target materials followed by a transfer into an ion source. As a first step in this transport chain the release of nuclear reaction products from refractory metals has been studied systematically and will be reviewed. High-energy protons (500 - 1000 MeV) produce a large number of radionuclides in irradiated materials via the nuclear reactions spallation, fission and fragmentation. Foils and powders of Re, W, Ta, Hf, Mo, Nb, Zr, Y, Ti and C were irradiated with protons (600 - 1000 MeV) at the Dubna synchrocyclotron, the CERN synchrocyclotron and at the CERN PS-booster to produce different nuclear reaction products. The main topic of the paper is the determination of diffusion coefficients of the nuclear reaction products in the target matrix, data evaluation and a systematic interpretation of the data. The influence of the ionic radius of the diffusing species and the lattice type of the host material used as matrix or target on the diffusion will be evaluated from these systematics. Special attention was directed to the release of group I, II and III-elements. Arrhenius plots lead to activation energies of the diffusion process. en_US
dc.language.iso en en_US
dc.publisher EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH en_US
dc.subject Radioactove ion beams en_US
dc.subject Isotope separation en_US
dc.subject ISOL en_US
dc.title The Role of Diffusion in ISOL Targets for the Production of Radioactive Ion Beams en_US
dc.type Preprint en_US


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