The hydrogen content of calcium targets was determined by elastic recoil detection (ERD). Thereby a Q3D magnetic spectrograph was used to obtain best depth resolution of the hydrogen profiles. The two most promising preparation methods for calcium targets with low hydrogen content - deposition of the most stable calcium halide CaF2 and protecting metallic Ca by a diffusion barrier of Al - have been examined. A detailed description of the technique that resulted in the minimal hydrogen content of the targets will be given.    «

The hydrogen content of calcium targets was determined by elastic recoil detection (ERD). Thereby a Q3D magnetic spectrograph was used to obtain best depth resolution of the hydrogen profiles. The two most promising preparation methods for calcium targets with low hydrogen content - deposition of the most stable calcium halide CaF2 and protecting metallic Ca by a diffusion barrier of Al - have been examined. A detailed description of the technique that resulted in the minimal hydrogen content of...    »