Review of the thermoluminescent dosimetry method for the environmental dose monitoring

Abstract

Passive solid state dosimeters, such as thermoluminescence dosimeters, provide integrated measurement of the total dose and are widely used in environmental monitoring programs. The objective of this paper is to provide a comprehensive review on the use of thermoluminescent dosimetry methods for monitoring radiation dose in the environment. The article presents the part of the research results of the project PREPAREDNESS (EMPIR 2016 call for Metrology for Environment joint research project) with a particular objective to harmonize procedures used by dosimetry services, relevant authorities and Institutes across the Europe. To achieve this, different monitoring routines that are based on passive environ mental dosimetry methods are investigated. Differences in performing specific steps such as preheating, reading, annealing, minimizing fading, and others, are analyzed. The investigation was performed by means of qualitative literature review that showed the lack of information about specific steps. The conclusion of this work is that thermoluminescent dosimetry measurement system has to be type-tested even though the testing procedure is complicated. In addition to this, control dosimeters should be introduced, International Organization for Standardization protocols should be followed during calibration, and finally, parameters influencing the measurement uncertainty have to be identified and well understood in order to pro duce ac cu rate dose measurement results.

Comparison of calibration factors for field-class dosimeters

“…Ex ten sive tests on dif ferent types of do sim e ters used by spe cial ized pro fes sional tech ni cal ser vices have shown a sim i lar sit u a tion as with ac tive do sim e ters: some do sim e ter types have prop er ties cor re spond ing with the stan dard re quire ments, while oth ers can have in fe rior metrological prop er ties. In the most ex treme case, an overresponse of more than 800 % was re corded at low en er gies for thermoluminescent dosim e ters used as am bi ent do sim e ters [8,[23][24][25].…”

Structural Properties of Al-Li-Zn Borate glass activated with Dy3+ for Radiation Dosimeter

“…Compared to all other manufactured samples, samples B1, B2, B3, B4, and B6 are glass formers with favourable thermal stability. When the GFA exceeds 0.5, it signifies stability, implying resistance against devitrification, allowing the material to remain in its glassy state across temperatures (Stanković Petrović et al, 2021).…”

“…According to Table5, the Al-Li-Zn borate glass doped with Dy compositions shows high values for both GFA and GS, indicating its strong tendency to remain in a glassy state and resist crystallisation(ALJEWAW et al, 2021; Bulus et al, 2017). A study byStanković Petrović et al (2021) suggests that materials with glass-forming ability (GFA.) tend to have 𝑇 𝑐 /𝑇 𝑔 ratios indicating good glass-forming capability.…”

Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard

“…A passive dosimeter uses one or more detectors that can store signal after being exposed to radiation when placed in a holder with some means of identification. To obtain readable signal, a dosimeter can be stimulated by heat (thermoluminescent dosimeter or TLD), by visible light (optically stimulated luminescent dosimeter or OSLD), or by UV light (radio-photoluminescent glass dosimeter or RPLGD) (Stankovic Petrovic et al 2021). Besides passive dosimeters, active personal dosimeters (APDs) have been used increasingly in radiation protection recently due to their capability of real-time individual monitoring in high-dose procedures (Vanhavere et al 2019; O’Connor et al 2021).…”