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1 引言 次级标准剂量实验室的任务之一是将国家基准实验室的照射量值,通过次级标准实验室的参考仪器,传递到次级标准实验室。传递方法是用一系列规定射线质,例如:量值已知的Χ射线（通常可以为治疗水平）照射次级标准实验室的参考仪器,根据仪器对这一系列射线质的不同示值,给出仪器的刻度因子F_E（或校准因子）,使F_E·M等于国家基准实验室的照射量值,其中M为次级标准实验室参考仪器的示值。然后,在次级标准实验室中可用这个已经国家基准实验室刻度的参考仪器,来刻度其他仪器,或将量值再传递给其他次级标准仪器。这些其他次级标准仪器可以覆盖较宽的量程,用它们再来刻度各种各样的现场应用仪器,如各种量程的巡测仪,辐射仪,个人剂量仪,TLD,环境γ辐射监测仪等。
1 Introduction One of the tasks of a secondary standard dose laboratory is to pass the exposure level of a national reference laboratory to a secondary standard laboratory through a secondary standard laboratory reference instrument. The method of delivery is to irradiate a secondary standard laboratory reference instrument with a series of defined ray qualities such as X-ray of known magnitude (usually therapeutic level). Depending on the instrument’s different indications of this series of rays, The instrument calibration factor F_E (or calibration factor), so that F_E · M equal to the national reference laboratory exposure, where M is the secondary standard laboratory reference instrument indication. This reference instrument, already calibrated to a national reference laboratory, can then be used in a secondary standard laboratory to scale other instruments or re-pass values to other secondary standard instruments. These other secondary standard instruments cover a wide range of scales and use them to scale a wide range of field applications such as range gauges, radiometers, personal dosimeters, TLDs, environmental gamma radiation monitors, etc. .