The antiproton depth–dose curve in water
The antiproton depth–dose curve in water
复制标题
水中反质子深度-剂量曲线
DOI：
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发表时间：
2008
影响因子：
3.5
通讯作者：
S. Kovačević
中科院分区：
文献类型：
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作者：
Niels Bassler;M. Holzscheiter;Oliver Jäkel;H. Knudsen;S. Kovačević
利用电离室测量了126 MeV反质子在水模中的深度剂量曲线。由于欧洲核子研究中心提供的反质子束具有脉冲结构，并且可能携带来自反质子湮灭的高LET成分，因此有必要对获得的电荷进行离子复合效应的校正。将计算结果与蒙特卡罗计算结果进行了比较，发现两者吻合较好。在此基础上，我们计算了反质子的深度-剂量曲线，并与质子的深度-剂量曲线进行了比较，发现反质子峰区的物理剂量增加了一倍。
We have measured the depth–dose curve of 126 MeV antiprotons in a water phantom using ionization chambers. Since the antiproton beam provided by CERN has a pulsed structure and possibly carries a high-LET component from the antiproton annihilation, it is necessary to correct the acquired charge for ion recombination effects. The results are compared with Monte Carlo calculations and were found to be in good agreement. Based on this agreement we calculate the antiproton depth–dose curve for antiprotons and compare it with that for protons and find a doubling of the physical dose in the peak region for antiprotons.