<sup>238</sup>U裂变电离室测量25.5 MeV中子注量率

²³⁸U裂变电离室测量25.5 MeV中子注量率

摘要: 在飞行时间谱仪测量中子能谱的基础上，利用²³⁸U裂变电离室测量了中国原子能科学研究院HI-13串列加速器产生的25.5 MeV中子注量率。为验证该裂变电离室测量快中子注量率的可靠性，在中国原子能科学研究院5SDH-2串列加速器上，利用该电离室和伴随α粒子装置同时测量14.8 MeV中子注量率，结果在不确定度范围内一致。

Abstract: Based on the neutron energy spectrum measured with a time-of-flight neutron spectrometer, the 25.5 MeV neutron fluence rate was measured with ²³⁸U fission chamber at the HI-13 tandem accelerator in CIAE (China Institute of Atomic Energy). To verify the reliability of the fission chamber for measuring fast neutron fluence rate, the 14.8 MeV neutron fluence rate was measured simultaneously with the fission chamber and the association α particle instrument at the 5SDH-2 tandem accelerator in CIAE, of which results are coincident within the uncertainties.