Paediatric organ doses from CT-simulation in brain tumour GK radiosurgery treatment – Phantom study

Majer, Marija; Knežević, Željka; Liu, Haikuan; Hršak, Hrvoje; Miljanić, Saveta; Zhuo, Weihai; Heinrich, Zdravko

doi:10.1016/j.radmeas.2017.03.026

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…12) Subsequently, the performance of the RPL dosimeters 13) and read-out systems 14) was improved. Currently, Ag-doped phosphate glasses are used in various applications, 15) including personal monitoring, 16) environmental monitoring, [17][18][19] medical dosimetry, [20][21][22] and dose imaging. 23,24) In Ag-doped phosphate glasses, Ag 0 , Ag 2+ , and Ag 2 + formed by ionizing radiation act as RPL centers.…”

Section: Introductionmentioning

confidence: 99%

Radiophotoluminescence behavior in Ag-doped phosphate glasses

Kawamoto

Koshimizu

Fujimoto

et al. 2022

Jpn. J. Appl. Phys.

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Radiophotoluminescence (RPL) is an emission phenomenon induced by the photoexcitation of luminescent centers (RPL centers) formed by ionizing radiation. Ag-doped phosphate glasses exhibiting RPL are applied in dosimeters. In this paper, we discuss the RPL behavior of Ag-doped phosphate glasses and their properties along with RPL center formation and disappearance mechanisms. When Ag-doped phosphate glasses are exposed to ionizing radiation, Ag0, Ag2+, and Agm n+, such as Ag2 +, clusters are formed because Ag+ acts as an electron and hole trap. Ag2+ is formed by the transfer of holes from PO4 3- tetrahedra. On the other hand, electrons are trapped by Ag+ to form Ag0. Subsequently, Ag2 + is formed by the association between Ag0 and Ag+ owing to the diffusion of Ag+. Ag0 is attributed to blue RPL center, while Ag2+ and Ag2 + are attributed to orange RPL centers. Moreover, Ag2 + and Ag2+ disappear upon heating at 500 and 673 K, respectively.

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