1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Uncertainty in Harshaw 6600 dosimeters: a study of routine dosimeter services at Nepal Academy of Science and Technology

THPS128
5 Jun 2025, 15:30
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC6.T18 Radiation Monitoring and Safety Thursday Poster Session

Speaker

Ram Karki (Tribhuvan University)

Description

This research investigates the uncertainty in radiation dose measurements utilizing TLD-100 Dosemeters (LiF:Mg, Ti), and a TLD Reader System of Harshaw 6600 Plus present at Nepal Academy of Science and Technology. The calibration of the Dosemeter reader facilitated precise dose determination, resulting in mean calibration and correction factors of 1.052 and 0.003, respectively. Particularly at low effective dose levels, the study underscores the inevitability of heightened uncertainties across all radiation characteristics. An evaluation of uncertainty uncovered various contributing sources, including detector sensitivity inhomogeneity, reading variability, and energy/angular dependence, with a mean uncertainty estimated at 0.25% and overall uncertainty 19.16% for K=1. Additionally, luminescence and angular dependence studies under different irradiation conditions, with angular response factors ranging from 0.90 to 1.10. Also, Klein-Nishina differential cross-section was study at different energy (60 keV, 80 keV, 100 keV and 150 keV) with scattering angle considering LiF:Mg, Ti as target and found decrease with scattering angle.

Footnotes

Keywords: TLD-100, Dosemeters, Calibration, Uncertainty, Effective Dose, Photons

Region represented Asia
Paper preparation format Word

Author

Ram Karki (Tribhuvan University)

Presentation materials

There are no materials yet.