Optical dating sediments
The electrons that have been excited to the conduction band may become entrapped in the electron or hole traps.
The ionizing radiation produces electron-hole pairs: Electrons are in the conduction band and holes in the valence band.
For beta particles with energies from 150 ke V to in excess of 10 Me V, dose measurement ranges from 10 mrem to 1000 rem.
Neutron radiation with energies of 40 ke V to greater than 35 Me V has a dose measurement range from 20 mrem to 25 rem.
In diagnostic imaging the increased sensitivity of the OSL dosimeter makes it ideal for monitoring employees working in low-radiation environments and for pregnant workers.
To carry out OSL dating, mineral grains have to be extracted from the sample.
The OSL ages have large standard errors mainly due to small sample sizes, relatively poor luminescence characteristics and uncertainties in dose-rate determinations.