Thermo luminescence dating

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Where there is a dip (a so-called "electron trap"), a free electron may be attracted and trapped.

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This phenomenon has been applied in the thermoluminescent dosimeter, a device to measure the radiation dose received by a chip of suitable material that is carried by a person or placed with an object.Thermoluminescence is a common geochronology tool for dating pottery or other fired archeological materials, as heat empties or resets the thermoluminescent signature of the material (Figure 1).Subsequent recharging of this material from ambient radiation can then be empirically dated by the equation: Age = (subsequently accumulated dose of ambient radiation) / (dose accumulated per year) This technique was modified for use as a passive sand migration analysis tool.(Figure 2).lattice vibrations, to rapidly decay into lower-energy states, causing the emission of photons in the process.The amount of luminescence is proportional to the original dose of radiation received.

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