一、β射线的物理特性1.什么是β粒子β射线是一种粒子辐射.这些粒子是从放射性同位素的原子核中射出的一种快速运动的电子,叫作β粒子.β粒子在与周围物质作用的过程中,逐渐损失掉本身的能量,最后被物质阻止,成为自由电子,与普通的核外电子没有什么不同,只是为了区别起见,通常称从核里出来的电子为β粒子或β射线. First, the physical characteristics of β-ray 1. What is β-particle β-ray is a particle radiation.These particles from the radioisotope nucleus of a fast-moving electrons, called β particles.β particles in the surrounding material The role of the process, and gradually lose their own energy, and finally blocked by the material to become free electrons, and ordinary nuclear extranuclear electronic is no different, just for the sake of distinction, usually called out from the nucleus of electrons as beta particles or beta rays .