轻粒子产额及其关联的同位旋效应

Isospin Effect on the Yield of Light Particles and Their Correlations

用晶格气体模型系统地研究了热发射体的粒子发射特性，阐述了发射体系的同位旋对轻系统的中子、带电粒子和轻粒子产额，以及对轻粒子产额比和双产额同位素比的影响．发现轻粒子产额和产额比是复合系统同位旋的敏感观测量，而双产额同位素比几乎不依赖于体系的同位旋．

The Lattice Gas Model is essentially intrduced to describe the features of isospin effect on the yield of ho particles,their ratios and double isotopic ratios. Calculations show that the multiplicity of light particles is consistent consistent the systematics of isospin. Moreover,the isotopic yield ratios are in accordance with N/Z of the system. With the increasing of (N-Z)/A, the isotopic ratios decrease,but double isotopic ratios display their insensitivity to isospin.