Large-Scale Calcium Metal Sample Preparation for sup 41 Ca Isotope Pre-Enrichment and AMS (Accelerator Mass Spectrometer)

摘要

Large quantities of high-purity Ca metal were successfully prepared and used in the Oak Ridge Calutron and subsequent AMS (accelerator mass spectrometer) measurements at Argonne National Laboratory. The high purity could be partly due to the pureness of the original source material for CaCO sub 3 but mostly due to the method of Ca metal reduction involved. A further indication that this is very high quality Ca metal was obtained from the Calutron from enrichment runs where the efficiency seems about a factor of 1.5 to 1.7 better than for the commercial Ca metal generally used. (ERA citation 12:018511)