The effect of detector disturb and the shell of the detector and construction material is not distinct . the low absorb cross section material is used to 235u - fission chamber . the low z material is used in experimental bracket and shielding material and the material is used less 获得了探测器之间扰动、探测器外壳、支架材料对信号中子测量无明显影响的结果；对~ ( 235 ) u裂变电离室，需采用中子吸收截面低的材料，对实验装置的支撑材料和屏蔽材料宜选用低z材料且尽量减少用材。
The absorbed doses are obtained with a uniform state ion chamber that is formed with liftld cavity and lif wall and designed by ourselves . the key problem , the dose to fluence conversion factor of the photon with single energy from 0 . 1 mev to 12mev , has been solved by simulating with monte carlo code system egs4 用m - c方法计算了固体电离室对0 . 1mev 12mev的单能光子的单位光子注量? lif吸收剂量的转换因子，从而解决了由高能光子吸收剂量实测值转换成光子注量时所面临的困难问题。
Elastic recoil detection technique with high depth resolution has been developed at the hi - 13 tandem accelerator of ciae . with high quality beam which was used for bombarding target , the recoils were detected with q3d magnetic spectrometer following a focal plane detector and a ae - e telescope detector with longitudinal double - room ionization chamber 该系统用高质量的重离子束轰击薄膜或块材靶样品，利用q3d磁谱仪及其焦面探测器和纵向型双电离室e ? e望远镜探测器两套探测系统，在前角区测量了靶中各种元素的反冲能谱。
