Effects of thermal shocks on the release of radioisotopes and on molten metal target vessels

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The ISOLDE pulsed proton beam peak power amounts to 500 MW during the 2.4 ms proton pulse. The fraction of the proton pulse energy deposited in the target material is at the origin of severe thermal shocks. Quantitative measurement of their effect on the release of radioelements from ISOLDE targets...

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Detalles Bibliográficos
Autores principales: Lettry, Jacques, Arnau-Izquierdo, G, Benedikt, Michael, Catherall, R, Cyvoct, G, Fabich, A, Georg, U, Gilardoni, S S, Jonsson, O, Ravn, H L, Sgobba, Stefano, Bauer, G, Bruchertseifer, H, Graber, T, Gudermann, C, Ni, L, Rastani, R
Lenguaje:eng
Publicado: 2002
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1016/S0168-583X(02)01919-5
http://cds.cern.ch/record/583212
Descripción
Sumario:The ISOLDE pulsed proton beam peak power amounts to 500 MW during the 2.4 ms proton pulse. The fraction of the proton pulse energy deposited in the target material is at the origin of severe thermal shocks. Quantitative measurement of their effect on the release of radioelements from ISOLDE targets was obtained by comparison of release profiles measured under different proton beam settings. The thermal shock induced in liquids (Pb, Sn, La) lead to mechanical failure of ISOLDE molten metal target vessels. Failure analysis is presented and discussed in the light of the response of mercury samples submitted to the ISOLDE beam and monitored by high-speed optical systems.

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