本文基于Φ7.5 cm×7.5 cm NaI（Tl）探测器，开展测量γ射线空气吸收剂量率方法的研究。使用蒙特卡罗方法对NaI（Tl）探测器进行仿真模拟，获取探测器50 keV~2.5 MeV能量范围的γ射线能谱图。利用G（E）函数对放射源空气吸收剂量率进行计算，求解G（E）函数时考虑K_max与优化因子M对其计算空气吸收剂量率产生的影响，对G（E）函数的求解进行优化以提高计算精度。经过优化的G（E）函数计算的空气吸收剂量率与理论标准值相对偏差S低于±1%。最后经过实验测量对比发现，G（E）函数空气吸收剂量率计算结果与剂量率仪测量结果相对偏差小于±10%，说明经过优化得到的NaI（Tl）探测器G（E）函数值可以用于空气吸收剂量率的测量应用。

Plasmon induced hot electrons have attracted a great deal of interest as a novel route for photodetection and light-energy harvesting. Herein, we report a hot electron photodetector in which a large array of nanocones deposited sequentially with aluminum, titanium dioxide, and gold films can be integrated functionally with nanophotonics and microelectronics. The device exhibits a strong photoelectric response at around 620 nm with a responsivity of 180 μA/W under short-circuit conditions with a significant increase under 1 V reverse bias to 360 μA/W. The increase in responsivity and a red shift in the peak value with increasing bias voltage indicate that the bias causes an increase in the hot electron tunneling effect. Our approach will be advantageous for the implementation of the proposed architecture on a vast variety of integrated optoelectronic devices.