Measurement of microdosimetric spectra with a wall-less tissue-equivalent proportional counter for a 290 MeV/u 12C beam
Measurement of microdosimetric spectra with a wall-less tissue-equivalent proportional counter for a 290 MeV/u 12C beam
复制标题
使用无壁组织等效正比计数器测量 290 MeV/u 12C 光束的微剂量光谱
DOI：
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发表时间：
2010
影响因子：
3.5
通讯作者：
M. Takada
中科院分区：
文献类型：
--
作者：
S. Tsuda;Tatsuhiko Sato;F. Takahashi;D. Satoh;A. Endo;S. Sasaki;Y. Namito;H. Iwase;S. Ban;M. Takada
测量了290 MeV/u碳束线能量y的频率分布，得到了y的剂量加权平均值，并与线能量转移（LET）进行了比较。在实验中，使用了模拟直径为0.72 µm的圆柱形体积中的无壁组织等效正比计数器（TEPC）。测量的频率分布的y，以及其剂量平均值同意在10%的不确定性与相应的数据从微剂量计算使用PHITS代码。290 MeV/u碳束的剂量平均线能量与LET之比为0.73，远小于壁TEPC的相应数据。这一结果表明，无壁TEPC是必要的，以精确测量高能重离子束γ的剂量平均值。
The frequency distribution of the lineal energy, y, of a 290 MeV/u carbon beam was measured to obtain the dose-weighted mean of y and compare it with the linear energy transfer (LET). In the experiment, a wall-less tissue-equivalent proportional counter (TEPC) in a cylindrical volume with a simulated diameter of 0.72 µm was used. The measured frequency distribution of y as well as its dose-mean value agrees within 10% uncertainty with the corresponding data from microdosimetric calculations using the PHITS code. The ratio of the measured dose-mean lineal energy to the LET of the 290 MeV/u carbon beam is 0.73, which is much smaller than the corresponding data obtained by a wall TEPC. This result demonstrates that a wall-less TEPC is necessary to precisely measure the dose-mean of y for energetic heavy ion beams.
高能重离子轨迹附近的微剂量测定。
影响因子：
3.4
作者：
Metting,NF;Rossi,HH;Braby,LA;Kliauga,PJ;Howard,J;Zaider,M;Schimmerling,W;Wong,M;Rapkin,M
通讯作者：
Rapkin,M