The phenomenon of optical luminescence (OL) is produced in the optical acting to the minerals, it is characteristic of the crystal structure of mineral and depends on the wavelenghths of simulating optical source. Dat...The phenomenon of optical luminescence (OL) is produced in the optical acting to the minerals, it is characteristic of the crystal structure of mineral and depends on the wavelenghths of simulating optical source. Dating with OL is based on the fact that the crystal has a large number of storage electrons, which comes from the action of natural radiation. As a consequence the emission process of photon is a leasing process of the storage electron in the crystal. However, if optical stimulation is continued there comes a time when all storage electrons have been emptied and so the integrated luminescence is proportional to number of storage electrons and hence to age of crystal since it accepted the natural radiation from the environment. There is a review of the principle,methodology and applying techniques of the dating with optical luminescence(DOL).展开更多
Experiment of energy cancellation by imitative sunning shows that all or most part of the initial thermoluminescence energy accumulated in quartz particles in eolian loess can be eliminated by sun light and the loess ...Experiment of energy cancellation by imitative sunning shows that all or most part of the initial thermoluminescence energy accumulated in quartz particles in eolian loess can be eliminated by sun light and the loess age can be determined by TL technique. A sample 1 meter beneath the baked bed taken from the Dongshuitou reservoir,Datong,Shanxi province gives age of 2.2±0.2×10^5 yrs,B.P.and the upper part of the Malan loess has been dated as 3.9±0.5×10^4 yrs.B.P.展开更多
In the present paper the shine-fading posibility of TL storage in quartz crystals is discussed with an artificial light source and also explained with the energy banal theory.In terms of the concept of “trap”, the a...In the present paper the shine-fading posibility of TL storage in quartz crystals is discussed with an artificial light source and also explained with the energy banal theory.In terms of the concept of “trap”, the author has substantiated the nature of TL storage in quartz crystals. A method for revising the residual TL stored in quartz crystals is proposed, and has been justified by the determined ages of six loess samples from different localities.展开更多
文摘The phenomenon of optical luminescence (OL) is produced in the optical acting to the minerals, it is characteristic of the crystal structure of mineral and depends on the wavelenghths of simulating optical source. Dating with OL is based on the fact that the crystal has a large number of storage electrons, which comes from the action of natural radiation. As a consequence the emission process of photon is a leasing process of the storage electron in the crystal. However, if optical stimulation is continued there comes a time when all storage electrons have been emptied and so the integrated luminescence is proportional to number of storage electrons and hence to age of crystal since it accepted the natural radiation from the environment. There is a review of the principle,methodology and applying techniques of the dating with optical luminescence(DOL).
文摘Experiment of energy cancellation by imitative sunning shows that all or most part of the initial thermoluminescence energy accumulated in quartz particles in eolian loess can be eliminated by sun light and the loess age can be determined by TL technique. A sample 1 meter beneath the baked bed taken from the Dongshuitou reservoir,Datong,Shanxi province gives age of 2.2±0.2×10^5 yrs,B.P.and the upper part of the Malan loess has been dated as 3.9±0.5×10^4 yrs.B.P.
文摘In the present paper the shine-fading posibility of TL storage in quartz crystals is discussed with an artificial light source and also explained with the energy banal theory.In terms of the concept of “trap”, the author has substantiated the nature of TL storage in quartz crystals. A method for revising the residual TL stored in quartz crystals is proposed, and has been justified by the determined ages of six loess samples from different localities.
