<abstract xmlns="http://www.w3.org/1999/xhtml">

The E1’ centre is one of the most common paramagnetic defects observed by electron spin resonance (ESR) in natural quartz, the formation of which is, however, quite complicated. The dose response to gamma ray irradiation of the E1’ centre in natural quartz was systematically investigated in the present study to find that its dose response depends on the heating conditions of the sample before irradiation. The signal intensity decreases on irradiation when quartz has been heated up to 300°C, while it increases when heated above 400°C. The phenomena can be explained by the electronic processes that heating supplies electronic holes to the oxygen vacancies while gamma ray irradiation supplies electrons.
</abstract>

The E1’ centre is one of the most common paramagnetic defects observed by electron spin resonance (ESR) in natural quartz, the formation of which is, however, quite complicated. The dose response to gamma ray irradiation of the E1’ centre in natural quartz was systematically investigated in the present study to find that its dose response depends on the heating conditions of the sample before irradiation. The signal intensity decreases on irradiation when quartz has been heated up to 300°C, while it increases when heated above 400°C. The phenomena can be explained by the electronic processes that heating supplies electronic holes to the oxygen vacancies while gamma ray irradiation supplies electrons.

Dose Response of the E1’ Centre in Quartz

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Dose Response of the E’ Centre in Quartz

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The E1’ centre is one of the most common paramagnetic defects observed by electron spin resonance (ESR) in natural quartz, the formation of which is, however,...

Dose Response of the E₁’ Centre in Quartz

Pubblicato online: 31 dic 2021

Pagine: 191 - 196

Ricevuto: 14 feb 2019

Accettato: 11 mar 2020

DOI: https://doi.org/10.2478/geochr-2020-0037

Parole chiave
quartz, ESR, oxygen vacancy, E’ centre, dose response

© 2019 Shin Toyoda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Dose Response of the E1’ Centre in Quartz

Pubblicato online: 31 dic 2021

Pagine: 191 - 196

Ricevuto: 14 feb 2019

Accettato: 11 mar 2020

DOI: https://doi.org/10.2478/geochr-2020-0037

Parole chiavequartz, ESR, oxygen vacancy, E’ centre, dose response

© 2019 Shin Toyoda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Dose Response of the E₁’ Centre in Quartz

Parole chiave
quartz, ESR, oxygen vacancy, E’ centre, dose response