Ion tracks in apatite

does annealing rate depend on pre-anealing sample preparation?

Autores

  • Igor Alencar Universidade Estadual de Campinas
  • Sandro Guedes Universidade Estadual de Campinas
  • Julio Cesar Hadler Universidade Estadual de Campinas

Palavras-chave:

Nuclear waste ceramics, Thermogeochronometers

Resumo

The resistance of radiation damage (latent fission tracks, metamictization) in minerals has been studied for decades. The aim of these studies is the employment of such materials as nuclear waste ceramics and thermo-geochronometers. The last is based on the knowledge of annealing kinetics and the Principle of Equivalent Time, which states that the reduction of damage by a thermal treatment (annealing) is independent from previous thermal history. We present preliminary results for reduction in projected length for fossil and pre-annealed apatite samples irradiated with 152 Sm ions (?150MeV and 45°). It was found that projected length in fossil samples are more resistent to annealing.

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Biografia do Autor

Igor Alencar , Universidade Estadual de Campinas

Universidade Estadual de Campinas

Sandro Guedes , Universidade Estadual de Campinas

Universidade Estadual de Campinas

Julio Cesar Hadler , Universidade Estadual de Campinas

Universidade Estadual de Campinas

Referências

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Guedes, Hadler, Oliveira, Moreira, Iunes, Tello. Radiat. Meas. 41:392-398, 2006.

Guedes, Moreira, Devanathan, Weber, Hadler. Improved fission-track annealing model based on reevaluation of annealing data, in preparation.

Duddy, Green, Laslett. Chem. Geol. (Isot. Geosci. Sec.) 73:25-38, 1988.

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Alencar, Guedes, Jonckheere, Trautmann, Soares, Moreira, Curvo, Tello, Nakasuga, Dias, Hadler. Projected length studies through chemical etching and annealing experiments of 152Sm ion tracks in apatite, in preparation.

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Como Citar

ALENCAR , I. .; GUEDES , S. .; HADLER , J. C. . Ion tracks in apatite: does annealing rate depend on pre-anealing sample preparation? . Physicae Proceedings, Campinas, SP, v. 1, n. 1, p. 3–4, 2020. Disponível em: https://econtents.bc.unicamp.br/eventos/index.php/phyproceedings/article/view/3214. Acesso em: 4 fev. 2023.