pp. 1599-1604
S&M1616 Research Paper of Special Issue https://doi.org/10.18494/SAM.2018.1930 Published: July 27, 2018 Dose Linearity and Linear Energy Transfer Dependence of Cr-doped Al2O3 Ceramic Thermoluminescence Detector [PDF] Yusuke Koba, Risa Shimomura, Weishan Chang, Kiyomitsu Shinsho, Shin Yanagisawa, Genichiro Wakabayashi, Kazuki Matsumoto, Hiroaki Ushiba, and Takayuki Ando (Received February 9, 2018; Accepted March 30, 2018) Keywords: Al2O3:Cr, alumina-based ceramics, TLD, dose linearity, LET dependence
A Cr-doped alumina (Al2O3:Cr) ceramic thermoluminescent detector (TLD) has the potential to be applied as a two-dimensional (2D) imaging device in radiation therapy. In this work, we investigated the linearity in the dose level of radiotherapy and the linear energy transfer (LET) dependence of Al2O3:Cr ceramic TLD using several species of heavy charged particles (HCPs). The Al2O3:Cr ceramic TLD had good linearity as a function of irradiation dose. However, the large LET-dependent response made it difficult to apply the detector directly to dose measurement in HCP therapy. The combination of two Al2O3 ceramic TLDs, one with Cr doping and one without Cr doping, may be expected to be applied to the measurement of LET distributions because of the different LET dependences.
Corresponding author: Yusuke KobaCite this article Yusuke Koba, Risa Shimomura, Weishan Chang, Kiyomitsu Shinsho, Shin Yanagisawa, Genichiro Wakabayashi, Kazuki Matsumoto, Hiroaki Ushiba, and Takayuki Ando, Dose Linearity and Linear Energy Transfer Dependence of Cr-doped Al2O3 Ceramic Thermoluminescence Detector, Sens. Mater., Vol. 30, No. 7, 2018, p. 1599-1604. |