论文标题
使用CR-39核跟踪探测器的$^{12} $ c ION相互作用的$^{12} $ c离子相互作用的总收费更改横截面测量值
Total charge changing cross sections measurements for $^{12}$C ion interactions with Al using CR-39 nuclear track detector
论文作者
论文摘要
我们正在研究使用CR39核轨道检测器调查12C的总电荷横截面。将夹在5厘米x 5厘米面积的CR39夹在55 meV/n的$^{12} $ c离子和135 meV/n的目标分别在日本千瓦（HIMAC）的重离子医疗加速器上进行辐照。裸露的CR39在70 $^\ Circ $ C中以$^7 $ N NaOH溶液蚀刻，以可视化主要离子光束及其碎片产生的轨道。根据$^{12} $ c ions的暴露密度，选择了蚀刻时间15至25小时。 Seiko FSP 1000成像显微镜用于同时获得前表和后表面蚀刻坑的图像。然后，通过计算目标前后的弹丸轨道，已经测量了总电荷更改横截面。由于没有以前的实验数据进行比较，因此将PHIT和GLAUBER模型与以前的实验结果和该实验结果进行了比较。由此，发现测量的数据与以前的和计算出的值非常吻合，除了能量95.7和98.6 meV/n时有两个点。这两个点需要更多的分析，这将在下一阶段进行。这项研究中的测量数据将是第一个实验性TCC数据，用于$^{12} $ C+AL交互作用100 MeV/n。这些测量的数据对于验证模型，在空间辐射情况下优化屏蔽以及改善治疗计划的治疗计划将很有用。
We are investigating the total charge changing cross-section of 12C by using the CR39 nuclear track detector. Target sandwiched with CR39 of 5 cm x 5 cm area was irradiated with $^{12}$C ion at 55 MeV/n and 135 MeV/n at the Wakasa wan Energy Research Center (WERC) and Heavy Ion Medical Accelerator in Chiba (HIMAC), Japan, respectively. Exposed CR39s were etched in $^7$N NaOH solution at 70$^\circ$C to visualize the tracks produced by the primary ion beam and its fragmentations. The etching time was chosen between 15 and 25 hours according to exposed densities of $^{12}$C ions. The SEIKO FSP 1000 imaging microscope was used to get the image of the front and back surface etch pit simultaneously. Then by counting the projectile track before and after the target, the total charge changing cross-section has been measured. Since there are no previous experimental data to compare, PHITS and Glauber model calculated theoretical values were compared with the previous and this experimental result. From that, the measured data were found in good agreement with the previous and calculated value except for two points at energy 95.7 and 98.6 MeV/n. These two points need more analysis which will be done in the next phase. Measured data in this study will be the first experimental TCC data for $^{12}$C+Al interactions in the energy 100 MeV/n. These measured data will be useful to verify the models, optimize shielding in space radiation circumstances, and also to improve treatment planning on therapy, as well.
