Artigo
Recalibration of U-doped standard glasses through uranium thin film for neutron-fluence measurements
Registro en:
Journal Of Radioanalytical And Nuclear Chemistry. Dordrecht: Springer, v. 302, n. 1, p. 17-26, 2014.
0236-5731
10.1007/s10967-014-3296-6
WOS:000342134800004
Autor
Soares, C. J.
Guedes, S.
Curvo, E. A. C.
Hadler, J. C.
Jonckheere, R.
Tello, C. A. [UNESP]
Lixandro-Filho, A. L.
Siqueira, P. T. D.
Madi Filho, T.
Resumen
This work presents a recalibration of U-doped standard glasses using natural uranium thin films to be used as most dedicated neutron monitor for fission-track dating. The recalibrated U-doped glasses were used to determine fission-track ages in apatite samples from Brazilian alkaline formations (Alto Paranaiba) and standard Durango apatite. Samples were irradiated in two nuclear reactors with different characteristics and the results were compared. For well-thermalized neutron facility, metal activation monitor was also used. The ages of Alto Paranaiba arch and Durango apatite agree with those determined by other radiometric dating methods and metal activation monitors. These results suggest that the presented recalibration is suitable to be used routinely for fission-track dating studies even in a non-well thermalized neutron facility. Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Univ Estadual Campinas, Inst Fis Gleb Wataghin, Dept Raios Cosm & Cronol, BR-13083592 Campinas, SP, Brazil Univ Estadual Campinas, IFGW, Dept Raios Cosm & Cronol, BR-13083859 Campinas, SP, Brazil Univ Fed Mato Grosso, ICET, Dept Fis, UFMT, BR-78060900 Cuiaba, MT, Brazil Tech Univ Bergakad Freiberg, Geol Inst, D-09596 Freiberg, Sachsen, Germany UNESP, FCT, Fac Ciencias & Tecnol, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil CNEN, Inst Pesquisas Energet & Nucl, Ctr Engn Nucl, Sao Paulo, Brazil UNESP, FCT, Fac Ciencias & Tecnol, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil