当带电粒子进入固体径迹探测器时,其能量将沉积在所经过的路径上而引起辐射损伤。例如,当裂变碎片进入聚合物薄膜时,在所经过的路径上,聚合物的链被打断,产生很多自由基。当用草酸、丙烯酸等不饱和的单体分子溶液浸泡薄膜时,这些单体分子就会沿粒子所经路径接枝到自由基上。这使损伤区得以成千倍地放大。但这时径迹仍不可见。然后,将薄膜浸入染料中,由于所用的单体分子容易着色,已接枝的部分被染上颜色,从而得到清晰的 When charged particles enter a solid track detector, their energy will be deposited on the path they travel, causing radiation damage. For example, when fissile fragments enter the polymer film, the polymer chains are broken off on the path traveled, generating a lot of free radicals. When using a solution of an unsaturated monomer such as oxalic acid or acrylic acid to soak a film, these monomer molecules are grafted onto the free radical along the path of the particles. This magnifies the damaged area a thousandfold. However, the track is still not visible at this time. Then, the film is immersed in a dye, the grafted portion is colored due to the easy coloring of the monomer molecules used, resulting in a clear