The Relation Between Radiation Energy and Exposure Time As Well As Its Applications
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摘要: 射线检测要获得一定的曝光量, 对于确定的工件、透照布置和X射线机, 在管电流值不变的前提下, 射线能量与曝光时间的这两个变量互相关联, 以及射线能量的平方与曝光时间这两变量互相关联。提出了确定修正系数Kt的几种思路与Kt的大致数值范围。对公式V21·t1=Kt·V22·t2进行了验证并指出其可能的实际应用。Abstract: To obtain definite exposure value under the precondition of fixed mA value and for certain object radiographic arrangement and X-ray unit, two variables of the radiation energy and exposure time are inter-related. The products of the square of tube voltage and exposure time are correlative as two variables varied before and after. The thinking of making certain of correction factor Kt and its value were presented. The formula of V21·t1=Kt·V22·t2 for some validation and points out its possible practical applications.
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Keywords:
- Radiation energy /
- Tube voltage /
- Exposure time /
- Correction factor
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[1] 日本无损检测学会编.射线探伤B[M].李衍译.北京：机械工业出版社, 1988：17. [2] 强天鹏, 射线检测(第2版)[M].北京：中国劳动社会保障出版社, 2007：22. [3] 美国无损检测手册射线卷[M].上海：世界图书出版社, 1992：269. [4] 王俊, 徐彦.承压设备无损检测责任师工作指南[M].沈阳：东北大学出版社, 2006：140-141.
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