Moslehi Amir, Raisali Gholamreza
Radiation Applications Research School, Nuclear Science and Technology Research Institute, Tehran, Iran.
Radiation Applications Research School, Nuclear Science and Technology Research Institute, Tehran, Iran.
Appl Radiat Isot. 2018 Jul;137:236-240. doi: 10.1016/j.apradiso.2018.03.027. Epub 2018 Mar 31.
The response of a microdosimeter for neutrons above 14 MeV is investigated. The mean quality factors and dose-equivalents are determined using lineal energy distributions calculated by Monte Carlo simulations (Geant4 toolkit). From 14 MeV to 5 GeV, the mean quality factors were found to vary between 6.00 and 9.30 and the dose-equivalents were in agreement with the true ambient dose-equivalent at the depth of 10 mm inside the ICRU sphere, H(10). An energy-independent dose-equivalent response around a median value of 0.86 within 22% uncertainty was obtained. Therefore, the microdosimeter is appropriate for dose-equivalent measurement of high-energy neutrons.
研究了一种用于能量高于14 MeV中子的微剂量计的响应。使用蒙特卡罗模拟（Geant4工具包）计算的线能量分布来确定平均品质因数和剂量当量。在14 MeV至5 GeV范围内，发现平均品质因数在6.00至9.30之间变化，且剂量当量与ICRU球体内10 mm深度处的真实环境剂量当量H(10)一致。在22%的不确定度范围内获得了围绕0.86中值的与能量无关的剂量当量响应。因此，该微剂量计适用于高能中子的剂量当量测量。
