摘要目的 通过在不同标准X射线RQR辐射场对Hp(3)进行刻度,并对刻度结果进行比较,探究国内标准X射线RQR辐射场刻度Hp(3)的可行性.方法 选择直径20 cm、高20 cm的柱模,分别选取国内外标准X射线RQR辐射场对同一TLD进行Hp(3)的刻度,选择射线包括RQR4 (60 kV)、RQR7 (90 kV)、RQR9 (120 kV),刻度内容包括能量响应、角度响应和线性响应.结果 在能量响应方面,TLD对国内外标准X射线RQR辐射场响应均较好,响应值与照射值差异均在10％以内.在角度响应方面,TLD在国外辐射场响应值较好,响应值与照射值差异均在6％以内.而在国内辐射场,TLD在20°响应值偏低,响应值与照射值差异＞10％.在线性响应方面,TLD在国内和国外标准X射线RQR辐射场拟合程度均较好.结论 本研究的各项检测结果表明,国内标准X射线RQR辐射场可以对TLD进行Hp(3)的刻度.

abstractsObjective To compare the calibration result of standard X-ray RQR radiation field between SSDL (NIRP) and CEA LIST LNHB (France),and to explore the feasibility of calibrating Hp (3) in standard X-ray RQR radiation field of SSDL (NIRP).Methods Using a column model with a diameter and high of 20 cm,TLD was calibrated in SSDL (NIRP) and CEA LIST LNHB (France) to measure the personal dose equivalent eye lens dose Hp (3),X-ray RQR radiation field included RQR4 (60 kV),RQR7 (90 kV),RQR9 (120 kV),with energy response,angle response and linear response.Results In terms of energy response,the calibration results of TLD in both SSDL (NIRP) and CEA LIST LNHB (France) were in good agreement.The difference between exposure value and response value was less than 10％.In terms of angle response,the calibration result of TLD in CEA LIST LNHB (France) was better in SSDL (NIRP).The difference between exposure value and response value in CEA LIST LNHB (France) was less than 6％,while the difference between exposure value and response value in SSDI (NIRP) was more than 10％ at angle of 20°.In terms of linear response,both calibration result of SSDL (NIRP) and CEA LIST LNHB (France) were in good agreement.Conclusions The standard X-ray RQR field in SSDL (NIRP) can be used for the calibration of Hp (3).