【摘要】 用多核素混合标准溶液制备了６种不同重量的圆柱体、井形体标准源。作了Ｇｅ（Ｌｉ）探测器对不同样品量的全能峰效率刻度。应用最小二乘法对两种不同形状的液体源的效率与γ射线能量及样品量关系分别作函数拟合。对两种几何形状的液体源作了相同样品量时的效率和探测限的比较。更多还原

【Abstract】 The full energy peak efficiency calibration of a Ge(Li)detector has been made for cylindrical and well-shaped liquid samples with six different weights. The samples are prepared by using the standard solution with many radioactive nuclides in it. Two functions, i.e. efficiency vs. gamma-ray energy and efficiency vs.sample’sweight, are fitted by the least square method for two different shaped liquid sources respectively.Comparisons are conducted of the efficiency and the detection limit for two liquid sources with the same weight and different geometries.更多还原