A review of electron spin spectroscopy and its application to the study of paramagnetic defects in crystalline quartz

Weil, John A.

doi:10.1007/bf00311472

Cited by 409 publications

(167 citation statements)

References 162 publications

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“…This dependence of the UV-violet emission to irradiation has also been observed (Botis et al, 2006;Krbetschek and Trautmann, 2000;Rink, 1994), although no precise mechanisms have been determined (Alonso et al, 1983;Halperin and Sucov, 1993;Yang and McKeever, 1990). Exploration of the properties of the extrinsic [AlO 4 /M + ]° defect using CL and ESR, has revealed that the population is highly sensitive to irradiation (Luff and Townsend, 1990;Perny et al, 1992;Weil, 1984). This can also be identified by the depletion of the signal with increasing exposure, as observed within our IL experiments (Fig.…”

Section: The Uv-blue Emissionssupporting

confidence: 81%

“…Such centres would be formed if the alkali ion were removed from [AlO 4 /M + ]° centres and we would expect ion migration to shi ft luminescence between these two centre types. Second, UV-blue luminescence has been linked to oxygen vacancies in a variety of different guises, called the E'-centres (see Weil, 1984 for a review). In many cases, the vacancy can couple with other defects such as protons.…”

Section: The Uv-blue Emissionsmentioning

confidence: 99%

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The problem of dating quartz 1: Spectroscopic ionoluminescence of dose dependence

King

Finch

Robinson

et al. 2011

Radiation Measurements

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A suite of quartz samples of different provenances, irradiation, thermal and depositional histories were analysed using spectroscopic ionoluminescence (IL) to investigate variations in emission spectra as a function of cumulative radiation dosing. Protons were selected for implantation to mimic the effect of natural radiation over geological timescales. All samples exhibited depletion in the UV-violet emission (3.2-3.4 eV) with increasing cumulative dose, whilst the red emission (1.8-1.9 eV) increased. A power-law relationship exists between the two emissions. It is inferred that the luminescence emission of quartz is indicative of its radiation history, and spectral analyses could be used to determine the utility of different quartz samples for optically stimulated luminescence dating (OSL) where the detection range is limited to 3.4-4.6 eV. KeywordsSpectroscopic ionoluminescence, implantation, protons, quartz, optically stimulated luminescence dating. AbbreviationsIonoluminescence (IL), Ultra-violet (UV), Optically Stimulated Luminescence (OSL) IntroductionOSL is used as a radiation dosimeter method within Quaternary geochronology, archaeology and retrospective accident dosimetry. Of the materials used for OSL studies, quartz is usually preferred (Aitken, 1998;Huntley et al., 1985). In addition, quartz has a range of industrial applications, which has rendered it the focus of intense research both into its physical and chemical properties, and its emission spectroscopy (see Götze, 2009; Krbetschek et al., 1997 for reviews). Numerous OSL dating applications to sediments of different ages (e.g. Ballarini et al., 2003;Pawley et al., 2008), provenances (e.g. Preusser et al., 2006) and depositional environments (e.g. Thrasher et al., 2009;Wallinga, 2002) have been made. However, despite the development of the single-aliquot regenerative dose protocol (Murray and Wintle, 2000), it is currently not possible to date all quartz using OSL. This is often due to quartz's highly variable OSL quantum efficiency (QE). The controls over quartz OSL QE remain unclear but have been linked to geological provenance (Götze et al., 2004;Rink et al., 1993;Westaway, 2009), irradiation (Rink, 1994, transport and thermal histories (Pietsch et al., 2008;Preusser et al., 2006). However quartz with the same irradiation, source and depositional histories often exhibit highly variable emission intensities McFee and Tite, 1998).The light emitted by quartz most commonly comprises bands in the UV-blue and red/IR (Krbetschek et al., 1997). Risø readers, the most widely used OSL instrumentation, stimulate the quartz with diodes at 470±20 nm (2.6 eV) and measure the response through Hoya U340 filters . The transparency of these filters lies between 3.4 and 4.6 eV and only a part of the UV-blue emission band is monitored. The remainder of the emission (below 3.4 eV and above 4.6 eV) is unmeasured in conventional OSL but may contain significant dosimetry or geological provenance information.Ionoluminescence (IL, also known as ion beam lumin...

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Section: The Uv-blue Emissionssupporting

confidence: 81%

Section: The Uv-blue Emissionsmentioning

confidence: 99%

The problem of dating quartz 1: Spectroscopic ionoluminescence of dose dependence

King

Finch

Robinson

et al. 2011

Radiation Measurements

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“…El cuarzo posee varios centros paramagnéticos potencialmente útiles con fines geocronológicos (Marfunin 1979;Weil 1984;Ikeya 1993): centro Germanio (Ge), centro Titanio (Ti), centro Aluminio (Al), centro E', centro OHC... cuyas características propias (en términos de sensibilidad a la radiación, estabilidad térmica, cinética de blanqueo...) los hacen más o menos atractivos en función del contexto geológico y del período de tiempo que se quiere datar (Ikeya 1993).…”

Section: Aplicación a Los Granos De Cuarzo Extraídos De Sedimentosunclassified

Datación por <i>ESR</i> del yacimiento arqueológico del Pleistoceno inferior de Vallparadís (Terrassa, Cataluña, España)

Duval¹,

Moreno²,

Shao³

et al. 2011

Trab. prehist.

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Excavated between 2005 and 2007, the site of Vallparadís (Terrassa, Spain) has given an abundant and diversified fauna associated with a rich Mode 1 industry. In order to complete the chronostratigraphic framework, we performed ESR and combined US-ESR dating applied to quartz grains extracted from sediments and fossil teeth, respectively. The results obtained are very significant, giving a weighted mean ESR age of 0.83 ± 0.13 Ma (2σ) for the reference archaeological level of the site (level 10) and another of 0.79 ± 0.23 Ma (2σ) for the archaeological level 12 of the Vallparadís sequence. These ESR results are in total agreement with the ones derived from biochronology and paleomagnetism. This whole dataset allows the elaboration of a reliable and consistent chronostratigraphic framework which chronologically places Vallparadís site in the late Early Pleistocene period, i.e. within a time range comprised between Jaramillo and Brunhes geomagnetic events. Consequently, as well as Gran Dolina-TD6 and Sima del Elefante- TE9 sites, in Atapuerca, Burgos, Vallparadís can be therefore considered as a key site for the study of early hominid settlements in Europe.

Excavado entre 2005 y 2007, el yacimiento de Vallparadís (Terrassa, España) ha aportado una fauna rica y diversa en asociación con un importante conjunto lítico de Modo 1. Con el objetivo de completar el marco cronoestratigráfico, se hicieron dataciones por los métodos de Resonancia Paramagnética Electrónica (Electron Spin Resonance, ESR) y ESR combinada con uranio-torio sobre algunas muestras de granos de cuarzo extraídos de sedimentos y dientes fósiles, respectivamente. Los resultados obtenidos son muy significativos, ofreciendo edades ESR promedias de 0,83 ± 0,13 Ma (2σ) para el nivel arqueológico de referencia del yacimiento (nivel 10) y de 0,79 ± 0,23 Ma (2σ) para el nivel arqueológico 12 de la secuencia de Vallparadís. Dichos resultados por ESR concuerdan con los obtenidos a partir de la biocronología y del paleomagnetismo. El yacimiento de Vallparadís dispone ahora de un marco cronoestratigráfico fiable y coherente, que permite situarlo cronológicamente a finales del Pleistoceno inferior, dentro de un rango temporal comprendido entre los eventos geomagnéticos de Jaramillo y Brunhes. Dicho yacimiento junto a los de Gran Dolina TD-6 y Sima del Elefante TE-9, en Atapuerca, Burgos, se posiciona como un yacimiento clave para el estudio de los primeros poblamientos humanos de Europa

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“…b Projection onto plane perpendicular to the c-axis; view onto the c-channel after Fig. 1 in Weil et al (1984). c Projection onto plane perpendicular to the a 1 -axis; view onto the a-channel after Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Research conducted by Weil (1984Weil ( , 1994 has proven that Fe 3+ ions in amethyst are present in tetrahedral sites and are accompanied by different positive ion compensators (Li, Na, H), with g factors close to 2.00 and different E/D factors. The distribution of Fe 3+ ion in three Si 4+ equivalent sites could be unequal, as described by Cortezão et al (2003).…”

Section: Introductionmentioning

confidence: 99%

The Mössbauer spectra of prasiolite and amethyst crystals from Poland

Czaja¹,

Kądziołka-Gaweł

Konefał

et al. 2016

Phys Chem Minerals

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A review of electron spin spectroscopy and its application to the study of paramagnetic defects in crystalline quartz

Cited by 409 publications

References 162 publications

The problem of dating quartz 1: Spectroscopic ionoluminescence of dose dependence

The problem of dating quartz 1: Spectroscopic ionoluminescence of dose dependence

Datación por <i>ESR</i> del yacimiento arqueológico del Pleistoceno inferior de Vallparadís (Terrassa, Cataluña, España)

The Mössbauer spectra of prasiolite and amethyst crystals from Poland

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