2012
DOI: 10.1016/j.radmeas.2012.03.012
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Investigation on non-optically bleachable components of ESR aluminium signal in quartz

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Cited by 40 publications
(17 citation statements)
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“…Then, we can suspect that a part of the measured signal could be related to this non-bleached dose (residual dose, D r On the other hand, a study performed on present-day fluvial deposits has permitted to check that the maximal bleaching was reached after a transportation of grain for a few kilometers (Voinchet et al, 2007). These grains are completely bleached and display only a residual signal associated with the presence of non-bleachable Al-centers (deep aluminium traps, DAT in Tissoux et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Then, we can suspect that a part of the measured signal could be related to this non-bleached dose (residual dose, D r On the other hand, a study performed on present-day fluvial deposits has permitted to check that the maximal bleaching was reached after a transportation of grain for a few kilometers (Voinchet et al, 2007). These grains are completely bleached and display only a residual signal associated with the presence of non-bleachable Al-centers (deep aluminium traps, DAT in Tissoux et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, studies regarding the behavior of the Alcenters ESR signal in quartz in response to thermal treatment, optical bleaching or gamma irradiation (Toyoda and Ikeya, 1994;Voinchet et al, 2003, Tissoux et al, 2012 have demonstrated the existence of different components with different growth or disappearance kinetics. It implies a new way to determine the D E before the age calculation.…”
Section: Introductionmentioning
confidence: 99%
“…In the method, it has been an assumption that the non-bleachable component does not respond to dose (no increase by irradiation). Recently this point was verified for European sedimentary quartz (Tissoux et al, 2012). However, it is still an important question how non-bleachable component was originally acquired in nature.…”
Section: Sedimentmentioning
confidence: 79%
“…Nous avons ici choisi de focaliser nos analyses ESR sur le centre paramagnétique lié à la présence d'aluminium dans les cristaux de quartz (centre Al). Comme indiqué précédemment, ce centre subit un blanchiment optique durant la phase de transport mais l'intensité du signal n'est pas remise totalement à zéro du fait de la présence de centres Al non photosensibles (Tissoux et al, 2012). Il est donc nécessaire de déterminer l'intensité résiduelle non blanchie de chaque échantillon pour pouvoir la soustraire aux intensités ESR mesurées afin de déterminer la paléodose.…”
Section: -Protocole Expérimentalunclassified