Energy response of different types of RADOS personal dosemeters with MTS-N (LiF:Mg,Ti) and MCP-N (LiF:Mg,Cu,P) TL detectors

Obryk, B.; Hranitzky, C.; Stadtmann, H.; Budzanowski, M.; Olko, P.

doi:10.1093/rpd/ncq562

Cited by 12 publications

(9 citation statements)

References 6 publications

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“…The simulated geometry of the cross section of TLD-100H (element 2) produced by Geant4 code FIGURE 5. Simulated relative H p (10) response of TLD-100H compared with published experimental data (Obryk et al 2011) For photon energy 50 -120 keV, the photoelectric effect is gradually replaced by Compton scattering, thus the secondary electron spectra gradually change. This has caused the under-response to occur (Olko 2002).…”

Section: Simulation Based On a Published Workmentioning

confidence: 96%

“…In this first stage of work, the simulation was based on the Obryk's experimental work (Obryk et al 2011). The developed code used a simplified geometry to get the energy response from a single TLD chip without filter.…”

Section: Simulation Based On a Published Workmentioning

confidence: 99%

“…Three commercial names for LiF TL dosimeter doped with Mg, Cu, P have been reported. They are MCP-N (Carinou et al 2008;Obryk et al 2011), TLD-100H (Carinou et al 2008) and GR200A (González et al 2007). SSDL Malaysia is using the TLD-100H equipped with a card of TLD-0110H.…”

Section: Introductionmentioning

confidence: 99%

“…It is by the use of the Geant4 simulation code. The first stage of the work simulated the energy response of the TLD-100H chip without filter, based on the work reported by Obryk et al (2011). The second stage of the work simulated the experimentally obtained energy response of the TLD-100H badge, based on the work obtained at the SSDL Malaysia laboratory.…”

Section: Introductionmentioning

confidence: 99%

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Response of LiF: Mg, Cu, P TL Detector Simulated with Geant4

Samat¹,

Priharti

2017

JSM

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The Geant4 simulation code was developed to study the H p (10) energy response of the LiF:Mg,Cu,P (TLD-100H). Initial study chose the simulation conditions similar to the work reported by Obryk et al. in year 2011, in which a TLD-100H chip without filter was used. The work went further to simulate the H p (10) results obtained experimentally at SSDL Malaysia. The experiment used a TLD-100H chip embedded in a TLD card and the card was enclosed in a badge complete with PTFE filter. Irradiation with eleven photon energies in the range of 24-1250 keV was applied. The simulation code therefore took into accounts the details of the badge (the materials type and the dimensions of the chip, the card, the badge and the filters) and the setup of the experiment (the source distance and the energies). In comparison with Obryk's work, the simulation code yielded the mean deviation of 0.59%. For the experimental work, the simulated H p (10) curves obtained were quite similar and comparable and a mean deviation of 13.96% was obtained. As both 0.59% and 13.96% deviations are within the acceptable limit of ±25%, it was concluded that a satisfactory level of accuracy has been achieved by the developed simulation code and the selection materials and physics processes that have been adapted in the code were correct. Sources of uncertainty that has contributed to this deviation are discussed.

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Section: Simulation Based On a Published Workmentioning

confidence: 96%

Section: Simulation Based On a Published Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Response of LiF: Mg, Cu, P TL Detector Simulated with Geant4

Samat¹,

Priharti

2017

JSM

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“…For verification purposes, this simulation was made based on the measured energy response of bare TLD LiF: Mg, Cu, P chip conducted by Obryk [19]. The dimension of the TLD chip used in Obryk's experiment was 4.5 mm diameter and 0.9 mm thick.…”

Section: A Simulation Modelmentioning

confidence: 99%

Geant4 Simulation of Number of Event Effect on the TLD LiF: Mg, Cu, P Energy Response

Priharti

2020

j.inform.inf.syst.softw.eng.appl

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The effect of different number of events on the bare thermoluminescent dosimeter (TLD) LiF:Mg,Cu,P chip energy response has been simulated using Geant4. This simulation aims to determine the optimum number of events with a minimum computational time. 14 photon energies in a range of 16–1250 keV with a range number of events 2×107 – 2×1012 were applied. A LiF: Mg, Cu, P chip with 4.5 mm diameter and 0.9 mm thick on the surface of 30×30 cm2 water phantom and a thin 10 µm slice of water (at 10 mm deep in the phantom) were considered as the sensitive volumes to calculate the respective absorbed dose DTLD and DW. The relative energy response R was calculated from the ratio of DTLD and DW for each energy normalised to DTLD and DW ratio of energy 662 keV. 2×109 number of events were found to be the optimum number of events with a minimum computational time.The simulation results were validated to the measurement results and the mean deviation of 0,59% was yielded. As the deviation are within the acceptable limit of ±25%, it was concluded that the results were considered satisfactory and the materials and physics processes applied in the code were correct.

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