The multiple elastic scattering of photon can effectively enhance the gain length.

光子和散射颗粒的多次弹性散射可以增大有效增益长度.

A normalization method for experimentally measured angular distribution in elastic scattering experiment in which the radioactive ion beam was used as the projectile has been developed.

介绍了放射性核束弹性散射实验中测量的角分布进行归一化的方法。