Pb 210 dating technique


Particles emitted at these two energies can be identified using an alpha spectroscopy system.

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Most commercial analysers use californium-252 neutron sources together with sodium iodide detectors and are mainly sensitive to TNC reactions.

Other use Am-Be-241 sources and bismuth germanate detectors, which register both TNC and NIS.

There is no radiochemical processing required with this technique.

The samples are simply packed into petri dishes or vials, left to equilibrate for three weeks and then counted on a High Purity Germanium (HP-Ge) gamma spectrometry system.

The two main techniques are Thermal Neutron Capture (TNC) and Neutron Inelastic Scattering (NIS).