| Autor: |
Jeroen W. Thompson |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
Radiation Measurements. 42:1637-1646 |
| ISSN: |
1350-4487 |
| DOI: |
10.1016/j.radmeas.2007.10.021 |
| Popis: |
Monte Carlo simulations of single aliquot regeneration (SAR) optically stimulated luminescence (OSL) dosimetry measurements of natural quartz are used to investigate the behaviour of the measured equivalent dose ( D E ) as a function of absorbed dose (palaeodose). The mean D E is shown to overestimate the palaeodose, particularly for larger luminescence measurement errors and larger palaeodoses. The median D E is shown to be a more accurate estimate of the palaeodose at moderate palaeodoses. Simulations show that exponential dose sequences yield similar accuracy and precision as linear dose sequences while reducing the total irradiation time. A minimal dose sequence is proposed and shown to require even less total irradiation per sample than exponential dose sequences, while maintaining accuracy (within 1%) and precision (standard deviation of 1–6%) for 24 aliquots measured with a reasonable luminescence measurement error of 2%. The results of this study demonstrate that significant savings in total irradiation time per sample are possible. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect