Using the Ge centers of quartz sediments, the buried ages of fluvial sediments were determined by ESR technique. The ESR ages obtained from Ge centers are consistent with the TL ages, correspond with their horizons, a...Using the Ge centers of quartz sediments, the buried ages of fluvial sediments were determined by ESR technique. The ESR ages obtained from Ge centers are consistent with the TL ages, correspond with their horizons, accord with the geological background, and every ESR age is available. In this paper, determination of total dose of natural radiation (TD) and the reliability of ESR age using Ge center are also discussed.展开更多
Center-of-mass（c.m.） correction and rotational correction in even-even Ge isotopes are systematically investigated within the triaxially deformed relativistic Hartree-Bogoliubov model using the PC-PK1 force. The she...Center-of-mass（c.m.） correction and rotational correction in even-even Ge isotopes are systematically investigated within the triaxially deformed relativistic Hartree-Bogoliubov model using the PC-PK1 force. The shell effect and deformation effect on the microscopic c.m. correction and rotational correction are discussed, and the importance of both corrections on reproducing the binding energy is demonstrated.展开更多
In ESR dating of sediments by using E’ centres of quartz in sediments,themost perplexing problem is that the ESR signals Of E’ centres do not diminish but in-crease after bleaching under light,so it is difficult to ...In ESR dating of sediments by using E’ centres of quartz in sediments,themost perplexing problem is that the ESR signals Of E’ centres do not diminish but in-crease after bleaching under light,so it is difficult to satisfy the premise of the datingmethod of sediments.In this case the ESR ages of sediments determined by E’ centresmight not be the sedimentation age of sediments.After bleaching the ESR signals of Gecentres in quartz could be completely reset to zero,Grün believed that these signalspossess potential in ESR dating.Some researchers determined the ages of beach展开更多
文摘Using the Ge centers of quartz sediments, the buried ages of fluvial sediments were determined by ESR technique. The ESR ages obtained from Ge centers are consistent with the TL ages, correspond with their horizons, accord with the geological background, and every ESR age is available. In this paper, determination of total dose of natural radiation (TD) and the reliability of ESR age using Ge center are also discussed.
基金Supported by Major State Basic Research Development(973)(201310635059)NSFC(11175002,11105110,11475140)Research Fund for the Doctoral Program of Higher Education(20110001110087)
文摘Center-of-mass（c.m.） correction and rotational correction in even-even Ge isotopes are systematically investigated within the triaxially deformed relativistic Hartree-Bogoliubov model using the PC-PK1 force. The shell effect and deformation effect on the microscopic c.m. correction and rotational correction are discussed, and the importance of both corrections on reproducing the binding energy is demonstrated.
基金Project supported by the National Natural Sdence Foundation and the Chinese Foundation for Development of Geological Sdences and Techniques.
文摘In ESR dating of sediments by using E’ centres of quartz in sediments,themost perplexing problem is that the ESR signals Of E’ centres do not diminish but in-crease after bleaching under light,so it is difficult to satisfy the premise of the datingmethod of sediments.In this case the ESR ages of sediments determined by E’ centresmight not be the sedimentation age of sediments.After bleaching the ESR signals of Gecentres in quartz could be completely reset to zero,Grün believed that these signalspossess potential in ESR dating.Some researchers determined the ages of beach
