Radioactive carbon dating ppt
This review discusses some of the advantages and problems of using these tracers to estimate recharge rates.
The suite of tracers allows recharge to be estimated over timescales ranging from a few years to several hundred thousand years, which allows both the long-term and modern behaviour of groundwater systems to be documented.
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The physical properties of CFCs and HCFCs are tunable by changes in the number and identity of the halogen atoms.
All tracers record mean residence times and mean recharge rates rather than a specific age and date of recharge.
The timescale over which recharge rates are averaged increases with the mean residence time.
Kr is a significant radioactive background for experiments that use liquified noble gases to search for dark matter and measure the low-energy solar neutrino flux.
While there are several proposed methods for reducing Kr levels in these experiments, an independent technique is needed for measuring very low Kr levels.
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