The anomalous fading of trapped charge in martian analogue materials such as basalt and andesite rock samples is measured. Optically stimulated luminescence (OSL) signals show rapid fading (of between 4% and 27% per decade). Fading rates obtained using high temperature thermoluminescence signals are smaller. The importance of knowing whether a standard fading correction method is applicable to samples of unknown age is illustrated by application to an 'infinitely old' known-age basalt, for which both the uncorrected and fading-corrected natural signals lie within the approximately linear region of the growth curve. (C) 2008 Elsevier Ltd. All rights reserved.
|Publication status||Published - 2008|
|Event||Solid State Dosimetry Conference - Delft, Netherlands|
Duration: 8 Jul 2007 → 13 Jul 2007
Conference number: 15
|Conference||Solid State Dosimetry Conference|
|Period||08/07/2007 → 13/07/2007|