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Title: Annealing of ion tracks in apatite under pressure characterized in situ by small angle x-ray scattering

Abstract

Fission track thermochronology is routinely used to investigate the thermal history of sedimentary basins, as well as tectonic uplift and denudation rates. While the effect of temperature on fission track annealing has been studied extensively to calibrate the application of the technique, the effect of pressure during annealing is generally considered to be negligible. However, a previous study suggested elevated pressure results in a significantly different annealing behaviour that was previously unknown. Here, we present a method to study track annealing in situ under high pressure by using synchrotron- based small angle x-ray scattering (SAXS). To simulate fission tracks in a controlled environment, ion tracks were created in apatite from Durango, Mexico using 2 GeV Au or Bi ions provided by an ion accelerator facility. Samples were annealed at 250 °C at approximately 1 GPa pressure using diamond anvil cells (DAcs) with heating capabilities. Additional in situ annealing experiments at ambient pressure and temperatures between 320 and 390 °C were performed for comparison. At elevated pressure a significantly accelerated annealing rate of the tracks was observed compared with annealing at ambient pressure. However, when extrapolated to geologically relevant temperatures and pressures, the effects become very small. The measurement methodology presentedmore » provides a new avenue to study materials behaviour in extreme environments.« less

Authors:
; ; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
George Washington Univ., Washington, DC (United States). DOE Alliance Center (CDAC)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10); Australian Research Council
OSTI Identifier:
1596795
Grant/Contract Number:  
NA0003858
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

Citation Formats

Schauries, Daniel, Afra, Boshra, Mota-Santiago, Pablo, Trautmann, Christina, Lang, Maik, Ewing, Rodney C., Kirby, Nigel, and Kluth, Patrick. Annealing of ion tracks in apatite under pressure characterized in situ by small angle x-ray scattering. United States: N. p., 2020. Web. doi:10.1038/s41598-020-57600-y.
Schauries, Daniel, Afra, Boshra, Mota-Santiago, Pablo, Trautmann, Christina, Lang, Maik, Ewing, Rodney C., Kirby, Nigel, & Kluth, Patrick. Annealing of ion tracks in apatite under pressure characterized in situ by small angle x-ray scattering. United States. doi:10.1038/s41598-020-57600-y.
Schauries, Daniel, Afra, Boshra, Mota-Santiago, Pablo, Trautmann, Christina, Lang, Maik, Ewing, Rodney C., Kirby, Nigel, and Kluth, Patrick. Tue . "Annealing of ion tracks in apatite under pressure characterized in situ by small angle x-ray scattering". United States. doi:10.1038/s41598-020-57600-y. https://www.osti.gov/servlets/purl/1596795.
@article{osti_1596795,
title = {Annealing of ion tracks in apatite under pressure characterized in situ by small angle x-ray scattering},
author = {Schauries, Daniel and Afra, Boshra and Mota-Santiago, Pablo and Trautmann, Christina and Lang, Maik and Ewing, Rodney C. and Kirby, Nigel and Kluth, Patrick},
abstractNote = {Fission track thermochronology is routinely used to investigate the thermal history of sedimentary basins, as well as tectonic uplift and denudation rates. While the effect of temperature on fission track annealing has been studied extensively to calibrate the application of the technique, the effect of pressure during annealing is generally considered to be negligible. However, a previous study suggested elevated pressure results in a significantly different annealing behaviour that was previously unknown. Here, we present a method to study track annealing in situ under high pressure by using synchrotron- based small angle x-ray scattering (SAXS). To simulate fission tracks in a controlled environment, ion tracks were created in apatite from Durango, Mexico using 2 GeV Au or Bi ions provided by an ion accelerator facility. Samples were annealed at 250 °C at approximately 1 GPa pressure using diamond anvil cells (DAcs) with heating capabilities. Additional in situ annealing experiments at ambient pressure and temperatures between 320 and 390 °C were performed for comparison. At elevated pressure a significantly accelerated annealing rate of the tracks was observed compared with annealing at ambient pressure. However, when extrapolated to geologically relevant temperatures and pressures, the effects become very small. The measurement methodology presented provides a new avenue to study materials behaviour in extreme environments.},
doi = {10.1038/s41598-020-57600-y},
journal = {Scientific Reports},
number = 1,
volume = 10,
place = {United States},
year = {2020},
month = {1}
}

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Works referenced in this record:

Annealing kinetics of latent particle tracks in Durango apatite
journal, February 2011


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