Nda standards are an essential part of successful application of nda techniques , almost nda instruments and methods require standards to make efficiency calibration and various response corrections Nda标准样品是成功应用nda技术的关键,几乎所有的nda仪器和方法需要标准样品来进行效率刻度和各种响应校正。
2 . using the mcnp - 4b code , this article has calculated the efficiency calibration curves of the hpge - spectrometer , compared with the results of experiment . the results have shown that the monte carlo simulation calculation has been a convenient and reliable method for the efficiency calibration of the hpge , - spectrometer 利用蒙特卡罗程序mcmp 4b模拟计算了高纯锗y谱仪对环境样品的探测效率,并与标准样品的实验结果比较,检验了计算结果的正确性。