Further characterization of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>E</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math>center in crystalline Si<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></

Jani, Mahendra G.; Bossoli, R. B.; Halliburton, L. E.

doi:10.1103/physrevb.27.2285

Cited by 237 publications

(121 citation statements)

References 20 publications

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“…The in tensity of E' centers increased between 170°C and 280°C, then decreased above 300°C and was annealed out at 440°C. This temperature behavior of E' centers is consistent with previous studies (Jani et al, 1983;Miki and Ikeya, 1981).…”

Section: Resultssupporting

confidence: 81%

Thermal stabilities of paramagnetic defect and impurity centers in quartz: Basis for ESR dating of thermal history.

1991

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Thermal stabilities of E', Al, and Ti centers in quartz from the Mannari granite were investigated by electron spin resonance (ESR) with isothermal and isochronal annealing experiments. Second order decay kinetics best explain the results. The closure temperatures at which the ESR clocks start were esti mated to be 91 °C, 78°C, and 31 °C for E', Al, and Ti centers, respectively, with a cooling rate of about 10°C/Ma. Closure temperatures were also estimated for rocks around an intrusive dike. The thermal history of a quartz bearing rock can be investigated using ESR ages for different centers.

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Section: Resultssupporting

confidence: 81%

Thermal stabilities of paramagnetic defect and impurity centers in quartz: Basis for ESR dating of thermal history.

1991

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“…2) shows an increase of thé signal intensity from 100 to 250°C and a rapid decrcase after 250°C. This curvc confirms thé results obtained by Jani et al (1983) and reccntly by Toyoda and Ikeya (1991a) for thé samc center. The latter authors showed.…”

Section: Annealing Studiessupporting

confidence: 80%

Potential use of the E' center as an indicator of initial resetting in TL/ESR dating of volcanic materials

Falguères

Miallier

Sanzelle

et al. 1994

Quaternary Science Reviews

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“…The experimental value of A iso for an ordinary EЈ center is 412 G, 33 but theoretical studies using a pseudopotential method similar to the one employed here predicted a value of 468 G, 6 close to the results found in the present work for Si 1 000 in the T II and T III states. Therefore it seems likely that the Si 1 000 A iso parameter is similar to the ordinary EЈ center value in states T II , T III but has a smaller value in the T IV structure.…”

Section: B Epr Parameterssupporting

confidence: 76%

Triplet states at an O vacancy in α-quartz

Lægsgaard

2002

Phys. Rev. B

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The energy landscape of an ␣-quartz O vacancy in the lowest triplet state is investigated. Four local minima are identified and geometries, total energies, and electron paramagnetic resonance ͑EPR͒ parameters are obtained. On the basis of calculated values for the magnetic dipole interaction between the electrons two of the structures are identified with known triplet centers detected by EPR. The effect of Ge substitution is studied, and it is concluded that Ge impurities in silica act as traps for dangling bonds with a trapping energy of ϳ1.5 eV relative to Si ions.

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Further characterization of theE1′center in crystalline SiO2

Cited by 237 publications

References 20 publications

Thermal stabilities of paramagnetic defect and impurity centers in quartz: Basis for ESR dating of thermal history.

Thermal stabilities of paramagnetic defect and impurity centers in quartz: Basis for ESR dating of thermal history.

Potential use of the E' center as an indicator of initial resetting in TL/ESR dating of volcanic materials

Triplet states at an O vacancy in α-quartz

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