Abstract
The optimum conditions of preheat temperature,
stimulation temperature, etc. in the single-aliquot regenerative
optically stimulated luminescence (SAR OSL) method were
examined specifically for measuring background dose in natural
quartz extracted from soils collected around Tokai-mura
in Japan. The objective was to assess the potential of SAROSL
dosimetry using soils for retrospective assessment of
a radiation accident. Variation in dose with depth was also
measured.
The SAR data showed good reproducibility and dose recovery,
and there was no evidence of fading of the quartz
signal based on “delayed” dose recovery experiments. The
minimum detection limit (MDL) dose was about 0.1Gy.
The dose dependence was measured using both the above
SAR OSL protocol as well as a SAR thermoluminescence
(TL, violet emission) protocol. The background doses were
generally in the range of the MDL to several Gy, and no clear
trend in dose depth profile was observed.
From these results, we conclude that SAR OSL dosimetry
using natural quartz extracted from soil could be used to
evaluate the dose of an accident.
| Original language | English |
|---|---|
| Journal | Proceedings in Radiochimica Acta |
| Volume | 1 |
| Pages (from-to) | 45–48 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | 4th International Conference of Asia-Pacific Symposium on Radiochemistry - Napa, CA, United States Duration: 29 Nov 2009 → 4 Dec 2009 Conference number: 4 |
Conference
| Conference | 4th International Conference of Asia-Pacific Symposium on Radiochemistry |
|---|---|
| Number | 4 |
| Country/Territory | United States |
| City | Napa, CA |
| Period | 29/11/2009 → 04/12/2009 |