A5053942550- Isotope Analysis in Ecology
- Mass Spectrometry Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Geology and Paleoclimatology Research
- Radioactive contamination and transfer
- Geomagnetism and Paleomagnetism Studies
- Radioactive element chemistry and processing
- Atomic and Molecular Physics
University of Science and Technology of China
2023
41Ca (half-life = 99 ka) is a cosmogenic radionuclide that has long been proposed as promising dating tracer for geological and archaeological samples from Middle Late Pleistocene [1]. Calcium abundant residence time of 800 ka in the oceans, much longer than half-life 41Ca. This led to expectation uniform distribution 41Ca/Ca ratios oceans around globe. Ocean deposits acquire global seawater value upon initial formation. Since ocean are shielded cosmic rays by overlying seawater, no produced...
<p>On earth, Calcium-41 is produced as a cosmogenic isotope via neutron capture process, leaving natural isotopic abundance of 10<sup>-15</sup> on earth surface. Calcium also vital importance for the metabolism biological organisms. Consequently, analysis long lived radioactive great in geoscience, archeology and life sciences. The half-life 1.03 x 10<sup>5</sup> years. It good candidate dating rock bone...