dc.contributor.author | Duval, Mathieu | |
dc.date.accessioned | 2017-06-02T12:00:45Z | |
dc.date.available | 2017-06-02T12:00:45Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0735-1348 | |
dc.identifier.uri | http://hdl.handle.net/10072/338548 | |
dc.description.abstract | A single saturating exponential (SSE) function is
classically used in ESR dating to fit the experimental
ESR data points derived from the aluminum (Al)
center in quartz. However, this function has some
obvious limits as it does not accurately fit the data
points of the dose response curve. This results in
unreliable equivalent dose (DE) values which are
highly dependent on the maximum irradiation dose.
Dose response curves of Al center in quartz show
that the dose response data contain at least two
components: a first one dominating at low dose
(usually < 5 kGy) and saturating quite quickly and a
second one dominating at higher doses with an
almost linear behavior. These data are more
appropriately fitted with a function combining an
exponential with a linear term (EXP+LIN). Two
variations of the EXP+LIN function were studied,
each one corresponding to distinct physical
assumptions. Since it is still unclear which one
should be preferred, the mean DE value extracted
from the fitting of the two equations may be
reasonably considered as the most reliable estimate of
the true DE value. In addition, to ensure accurate
fitting of the linear part, it is important to have at
least three data points at high doses (>10 kGy). It is
also suggested to pool all the ESR intensities derived
from repeated ESR measurements of each aliquot in
the fitting process, in order to reduce the error in the
DE value. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | East Carolina University, Luminescence Dosimetry Laboratory | |
dc.publisher.uri | http://www.ecu.edu/cs-cas/physics/ancient-timeline/ATL30.cfm | |
dc.relation.ispartofpagefrom | 41 | |
dc.relation.ispartofpageto | 50 | |
dc.relation.ispartofissue | 2 | |
dc.relation.ispartofjournal | Ancient TL | |
dc.relation.ispartofvolume | 30 | |
dc.subject.fieldofresearch | Geochronology | |
dc.subject.fieldofresearch | Geochemistry | |
dc.subject.fieldofresearch | Geology | |
dc.subject.fieldofresearchcode | 040303 | |
dc.subject.fieldofresearchcode | 0402 | |
dc.subject.fieldofresearchcode | 0403 | |
dc.title | Dose response curve of the ESR signal of the Aluminum center in quartz grains extracted from sediment | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
dc.description.version | Version of Record (VoR) | |
gro.rights.copyright | © 2012 East Carolina University. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version. | |
gro.hasfulltext | Full Text | |
gro.griffith.author | Duval, Mathieu | |