Williams J R, Mijnheer B J, Rassow J, Meissner P, Hensley F
Strahlentherapie. 1981 Apr;157(4):245-50.
An intercomparison of neutron dose measurements was made at Essen by visiting groups from Amsterdam and Edinburgh to compare measurements of the neutron and photon absorbed doses in a phantom in the neutron beam. An intercomparison of the photon calibration of the tissue-equivalent chambers was also made. Differences in the measurements of total absorbed dose in the neutron beam of up to 4.7% were observed. These were consistent with the observed differences in the photon calibrations. A summary is given of the different calibration methods used by each group. Greater discrepancies (up to 18%) were seen in the measurement of the photon contribution to the absorbed dose in the neutron beam and these were in part due to insufficient shielding of the GM counter from thermal neutrons.
来自阿姆斯特丹和爱丁堡的访问团队在埃森进行了中子剂量测量比对，以比较中子束中模体的中子和光子吸收剂量测量结果。还对组织等效电离室的光子校准进行了比对。观察到中子束中总吸收剂量测量结果的差异高达4.7%。这些差异与光子校准中观察到的差异一致。给出了每个团队使用的不同校准方法的总结。在测量光子对中子束中吸收剂量的贡献时，发现了更大的差异（高达18%），部分原因是盖革-弥勒计数器对热中子的屏蔽不足。
