Spectrophotometric determination of the optimal wavelength for a polymer-gel dosimeter

Kyung Hwan Chang, Suk Lee, Yuan Jie Cao, Jang Bo Shim, Jung Ae Lee, Dae Sik Yang, Young Je Park, Won Sup Yoon, Chul Yong Kim, Sam Ju Cho, Sang Hoon Lee, Woo Chul Kim, Chul Kee Min, Kwang Hwan Cho, Hyun Do Huh

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The purpose of this study was to determine the optimal wavelength for a polymer-gel dosimeter previously developed by our research groups; this was done through a spectrophotometric characterization of its dosimetric properties. A gel sample was irradiated with a 6-MV photon beam from a linear accelerator, and its response was spectrophotometrically analyzed. The absorbance, dose linearity, reproducibility, and dose-rate dependence of the dosimeter were evaluated at various wavelengths and doses. The absorbance of the polymer-gel dosimeter did not show any peak sensitivity within the studied range of wavelengths. For the range of doses studied, the best dose linearity was recorded, with an R2 of 0.9701 at a wavelength of 400 nm. The reproducibility of the results was excellent, and the error in the dose-rate dependence was within the range of ± 3%. The gel dosimeter displayed a very stable response, thus confirming the efficiency of this 3D dosimeter.

Original languageEnglish
Pages (from-to)1194-1198
Number of pages5
JournalJournal of the Korean Physical Society
Volume62
Issue number8
DOIs
Publication statusPublished - 2013 Apr

Keywords

  • Absorbance
  • Dose linearity
  • Optimal wavelength
  • Polymer gel
  • Spectrophotometer

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Chang, K. H., Lee, S., Cao, Y. J., Shim, J. B., Lee, J. A., Yang, D. S., Park, Y. J., Yoon, W. S., Kim, C. Y., Cho, S. J., Lee, S. H., Kim, W. C., Min, C. K., Cho, K. H., & Huh, H. D. (2013). Spectrophotometric determination of the optimal wavelength for a polymer-gel dosimeter. Journal of the Korean Physical Society, 62(8), 1194-1198. https://doi.org/10.3938/jkps.62.1194