Measurement and comparison of the temperature-dependence of refractive index of water and Plexiglas phantoms by interferometry method for their use in optical calorimetry

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Neshati Reza; Rashidian vaziri MohammadReza; Ziaie Farhoud; Beigzadeh AmirMohammad

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Journal: Journal of Radiation Safety and Measurement Year:2020 | Volume:8 | Issue:2 (supplement) Page(s): 55-60

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Title

Measurement and comparison of the temperature-dependence of refractive index of water and Plexiglas phantoms by interferometry method for their use in optical calorimetry

Author(s)

Neshati Reza | Rashidian vaziri MohammadReza | Ziaie Farhoud | Beigzadeh AmirMohammad | Issue Writer Certificate

Keywords

CalorimetryQ1

doseQ1

laser interferometryQ1

phantomQ1

PlexiglasQ1

waterQ1

refractive indexQ1

temperature dependenceQ1

Abstract

In radiation Calorimetry by using laser beams and interferometry setups, variations induced by dose absorption in phantom can be precisely measured. dose absorption and the induced temperature change result in refractive index variation of the material. In order to be able to measure the low amount of absorbed dose in the phantom, temperature dependence of refractive index of the material must be precisely known. water and Plexiglas phantoms can be used as tissue-equivalent materials and a multitude of reports have been published in recent years regarding their use for radiation Calorimetry. In this study, temperature dependence of refractive index of water and Plexiglas (poly-methyl methacrylate) is measured using a laser interferometry setup. The results show that the refractive index of Plexiglas has more variations with temperature compared to water. This shows that use of Plexiglas as the absorbing material for optical Calorimetry, due to its nearly zero heat defect, increases the accuracy of absorbed dose measurements.

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APA: Copy

Neshati, Reza, Rashidian vaziri, MohammadReza, Ziaie, Farhoud, & Beigzadeh, AmirMohammad. (2020). Measurement and comparison of the temperature-dependence of refractive index of water and Plexiglas phantoms by interferometry method for their use in optical calorimetry. IRANIAN JOURNAL OF RADIATION SAFETY AND MEASUREMENT, 8(2 (supplement) ), 55-60. SID. https://sid.ir/paper/408064/en

Vancouver: Copy

Neshati Reza, Rashidian vaziri MohammadReza, Ziaie Farhoud, Beigzadeh AmirMohammad. Measurement and comparison of the temperature-dependence of refractive index of water and Plexiglas phantoms by interferometry method for their use in optical calorimetry. IRANIAN JOURNAL OF RADIATION SAFETY AND MEASUREMENT[Internet]. 2020;8(2 (supplement) ):55-60. Available from: https://sid.ir/paper/408064/en

IEEE: Copy

Reza Neshati, MohammadReza Rashidian vaziri, Farhoud Ziaie, and AmirMohammad Beigzadeh, “Measurement and comparison of the temperature-dependence of refractive index of water and Plexiglas phantoms by interferometry method for their use in optical calorimetry,” IRANIAN JOURNAL OF RADIATION SAFETY AND MEASUREMENT, vol. 8, no. 2 (supplement) , pp. 55–60, 2020, [Online]. Available: https://sid.ir/paper/408064/en

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