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本文主要介绍和描写了用于快中子引起的发射带电粒子核反应研究的具有共阴极的两个背靠背的双重屏栅电离室。用双参数数据获取系统可同时得到阳极和阴极的关联信号。由此可以研究由贴在阴极上的靶物质发射的带电粒子的能量和角分布，实验上用Ｐｕα放射源来检验屏栅电离室的基本性能，由双参数数据获取系统得到其双维谱，经数据处理之后，其角分布基本上呈现各向同性分布，对Ｐｕα放射源的能量（Ｅ＝５．４９９ＭｅＶ），其能量分辨串为～２％，此电离室已用于（４０）￣Ｃａ（ｎ，α）和￣（６４）Ｚｎ（ｎ，α）等核反应研究工作。
This article describes and describes two back-to-back dual-screen ionization chambers with a common cathode for fast-neutron-induced emission of charged particle nuclear reactions. With a two-parameter data acquisition system, an anodic and cathodic correlation signal can be obtained simultaneously. From this we can study the energy and angular distribution of the charged particles emitted by the target material attached to the cathode. Experimentally, Puα radiation source was used to test the basic performance of the screen grid ionization chamber. The two-dimensional spectrum was obtained from the two-parameter data acquisition system, After data processing, the angular distribution is basically isotropic distribution, the energy of Puα radiation source (E = 5.499MeV), the energy resolution string is ~ 2%, this ionization chamber has been used for (40) ~ Ca ( n, α) and ~ (64) Zn (n, α) and other nuclear reactions.