Evaluation of the Basic Dosimetric Properties of Calcium Sulfide Crystals with Rare Earth Elements as a Sensor of OSL Dosimeter

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CHANGIZI VAHID; SADEGHI HOSSEIN; Radiation Maryam; AGHAEI ATEFEH; Yazdanmehr Mohsen

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Journal: Payavard Salamat Year:2019 | Volume:12 | Issue:3 Page(s): 201-209

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Title

Evaluation of the Basic Dosimetric Properties of Calcium Sulfide Crystals with Rare Earth Elements as a Sensor of OSL Dosimeter

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Keywords

OSLQ1

CaSQ1

DosimeteryQ1

Abstract

Background and Aim: Today, OSL )Optically Stimulated Luminescence) dosimetry system based on optical stimulation, includes systems that can meet many requirements for radiation protection in the field of medicine and space. The Calcium Sulfide (CaS) is one of the earth's alkaline sulfide materials which can be used as a detector in this system. In this research, some of the dosimetry properties of CaS doped with Cerium, )Ce), and Samarium, )Sm) elements were investigated as OSL dosimeter sensor. Materials and Methods: First, attenuation of x-rays through the sensors were analyzed and the absorbed dose rate was evaluated using MCNP code. After calcium sulfide tablets were fabricated and their concentration optimized, the maximum waiting time prior to readout was obtained. In addition, the repeatability and linear response of the detector were determined as a function of CaS concentration. Results: Eight minutes after radiation exposure of detectors, the detection output signals became stable. This stability was monitored for at least 30 minutes after irradiation. The repeatability in measurements was observed within the dose ranges of 100 to 860 mGy. The dosimeter response was observed linear over this dose ranges. Conclusion: According to the above-observed results and statistical evaluations, one can conclude that the CaS: Ce, Sm crystal is a proper sensor for OSL dosimeter systems in medicine and space studies.

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APA: Copy

CHANGIZI, VAHID, SADEGHI, HOSSEIN, Radiation, Maryam, AGHAEI, ATEFEH, & Yazdanmehr, Mohsen. (2019). Evaluation of the Basic Dosimetric Properties of Calcium Sulfide Crystals with Rare Earth Elements as a Sensor of OSL Dosimeter. PAYAVARD-SALAMAT, 12(3 ), 201-209. SID. https://sid.ir/paper/376602/en

Vancouver: Copy

CHANGIZI VAHID, SADEGHI HOSSEIN, Radiation Maryam, AGHAEI ATEFEH, Yazdanmehr Mohsen. Evaluation of the Basic Dosimetric Properties of Calcium Sulfide Crystals with Rare Earth Elements as a Sensor of OSL Dosimeter. PAYAVARD-SALAMAT[Internet]. 2019;12(3 ):201-209. Available from: https://sid.ir/paper/376602/en

IEEE: Copy

VAHID CHANGIZI, HOSSEIN SADEGHI, Maryam Radiation, ATEFEH AGHAEI, and Mohsen Yazdanmehr, “Evaluation of the Basic Dosimetric Properties of Calcium Sulfide Crystals with Rare Earth Elements as a Sensor of OSL Dosimeter,” PAYAVARD-SALAMAT, vol. 12, no. 3 , pp. 201–209, 2019, [Online]. Available: https://sid.ir/paper/376602/en

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