多丝正比室对能谱的测量中发现，２４１Ａｍ的５９．６ｋｅＶ谱线能峰呈双峰结构，电场分布计算，电子漂移过程分析及气体放大倍数的计算表明，丝室结构的非圆对称将导致：１）电子漂移到阳极丝的过程中扫过的电位差统计分布的展宽甚至出现双峰结构；２）气体放大倍数与电子到达方向有关，丝室电场分布的计算中采用了解析解和数值解相结合的方法。 Multi-wire proportional chamber measurements of the spectrum found that 241Am 59.6keV spectral peak showed a bimodal structure, the electric field distribution calculation, the electron drift process analysis and gas magnification calculations show that the non-circular symmetry of the chamber structure will be Resulting in: 1) the spread of the statistical distribution of the potential difference swept even in the process of electron drift to the anode wire, even with a bimodal structure; 2) the magnification of gas is related to the direction of electron arrival, and the analytical solution of the electric field distribution in the wire chamber is used Method of combining numerical solution.