Isotope dating information

Create fake pottery that will pass the thermoluminescence test One way to pass a fake through a TL test is to expose the newly-made pottery to a high dose of artificial radiation sources, thus fooling the measurement instruments.

The older an object, the more trapped electrons it will have.The minerals that are used for thermoluminescence dating are mainly quartz and feldspar.The last time a crystal was reheated and its electrons were released is known as a "clock resetting event".Natural radioactivity causes latent thermoluminescence to build up so the older an object is, the more light is produced.Therefore, thermoluminescence dating is actually determining the last time a crystal was heated and electrons were released.Electron trapping Energy absorbed from ionizing radiation frees electrons to move through the crystal lattice, where some are trapped at imperfections.Later heating releases the trapped electrons, producing light whose intensity is proportional to the amount of radiation absorbed.Indeed, the figure shows an automatic instrumentation which allows measurement of thermoluminescence light from samples and also the determination of the dose rate per year.This last procedure involves the use of a radioactive source, though very weak.When the sample is heated in the lab, it releases thermoluminescence light.The intensity of the thermoluminescence light is proportional to the time that has passed from the last clock resetting event, which for ceramics correspond to when it was baked.

Leave a Reply

Your email address will not be published. Required fields are marked *

One thought on “isotope dating information”