Preparation of self-supporting nickel targets from Ni, Ni and Ni |
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Authors: | Bettina Lommel Willi HartmannAnnett Huebner Birgit KindlerJutta Steiner |
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Affiliation: | GSI Helmholtzzentrum Für Schwerionenforschung GmbH, Targetlabor, Planckstr. 1, 64291 Darmstadt, Germany |
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Abstract: | The investigation of the distribution of the fusion-barrier height by heavy-ion collisions requires thin self-supporting targets. To increase the accuracy of the measurement the thickness and homogeneity has to be known as precisely as possible.We prepared the self-supporting nickel foils out of the isotopes 58Ni, 60Ni and 61Ni. The resulting targets were between 75 and 105 μg/cm² thick. The foils were produced on copper backing by electron-beam gun evaporation and by extracted ion-beam sputtering, both in high vacuum. To obtain self-supporting nickel foils the copper was removed by etching. We will discuss and compare both methods. |
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Keywords: | Fusion-barrier height Heavy-ion target Self-supporting nickel Isotopically enriched nickel Evaporation |
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