In this work we analyze the dosimetric properties of sulfamic acid irradiated by X-rays photons (6MV and 18MV), electrons (6 MeV and 18 MeV), protons (68 MeV) and neutrons (from 0 to 400 MeV). After irradiation, the samples are analyzed by Electronic Paramagnetic Resonance “EPR” to measure the applied radiation dose. For all used irradiations, the obtained results show that the measurable threshold dose is 0.25 Gy. The correlation between measured dose and EPR signal is linear in the dose range from 0 to 20 Gy with a correlation coefficient above 0.999. Sulfamic acid seems to be more sensitive to photons and electrons irradiations (approximately 20% more sensitive) than to protons and neutrons irradiations. The overall uncertainty (2σ) of dose monitoring is approximately 6% by peak to peak method and 5% by double Integration method. The time dependence indicates a low fading effect during the storage period (4% of fading after two months of storage). These results prove that sulfamic acid is a promising dosimeter for use in the field of radiotherapy including hadrontherapy, These results prove that sulfamic acid is a promising dosimeter for use in the field of radiotherapy including hadrontherapy, in particular for small field treatment and out off-field dose estimation.

在这项工作中，我们分析了 X 射线光子（6MV 和 18MV）、电子（6 MeV 和 18 MeV）、质子（68 MeV）和中子（0 到 400 MeV）照射的氨基磺酸的剂量学特性。照射后，样品通过电子顺磁共振“EPR”进行分析，以测量施加的辐射剂量。对于所有使用的辐射，获得的结果表明可测量的阈值剂量为 0.25 Gy。测量剂量与 EPR 信号之间的相关性在 0 至 20 Gy 的剂量范围内呈线性，相关系数高于 0.999。氨基磺酸似乎对光子和电子辐射更敏感（比对质子和中子辐射更敏感约 20%）。剂量监测的总体不确定性 (2σ) 峰峰值法约为 6%，双积分法约为 5%。时间依赖性表明在储存期间褪色效应较低（储存两个月后褪色率为 4%）。这些结果证明氨基磺酸是一种用于包括强子治疗在内的放射治疗领域的有前景的剂量计。场剂量估计。