Target nanomaterials at CERN-ISOLDE: synthesis and release data

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:376

Article; Proceedings Paper

关键词: Nanomaterials;    CERN-ISOLDE;    Spallation recoil;    Release efficiency;    Radioactive ion beams;   

DOI  :  10.1016/j.nimb.2016.03.003

来源: Elsevier

【 摘 要 】

Five different nanostructured target materials were tested and operated at ISOLDE in the year of 2014, three of them being carbon-based nanocomposites. In most cases such target materials have higher radioisotope intensities than standard targets and with apparently longer release characteristics. Here, an isotope release profile from a standard calcium oxide (CaO) powder target is compared to the nanostructured one. For all target materials, the synthesis is the key process since it determines the material characteristics and maximum operation temperature which, in turn, defines the final isotope yields (especially for exotic isotopes). An unexpected release of Ar isotopes from a nanometric CaO powder target, with its oven set to room temperature is described and a release mechanism is proposed: spallation recoil momentum from the Ca-nat(p,x)Ar-35 reaction. (C) 2016 The Authors. Published by Elsevier B.V.

【 授权许可】

Free