Optical dating techniques

The electrons that have been excited to the conduction band may become entrapped in the electron or hole traps.

Under stimulation of light the electrons may free themselves from the trap and get into the conduction band.

The technique of optical dating was first reported 30 years ago, and has since revolutionized studies of events that occurred during the past 500,000 years.

Here, two practitioners of optical dating assess its impact and consider its future.

Non-UNL users: Please talk to your librarian about requesting this dissertation through interlibrary loan.

This dissertation project used optical dating techniques to assess the impacts of changing climatic conditions on three alluvial systems in the western United States.

An outline of the general physical principles of luminescence dating is given.

Saline minerals are one of the most promising materials for establishing the chronology of sediment sequences in arid areas.

In this report, the fundamental optically stimulated luminescence (OSL) properties of halite and the feasibility of optical dating of halite were explored.

Because data from small aliquots showed evidence of partial bleaching, the Leading Edge model, and the Minimum Age Model were applied to large data sets, and produced ages consistent with the 137Cs data.

Comparative data were collected using the single-grain optically stimulated luminescence (OSL) technique.

The photons are detected using a photomultiplier tube.

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