论文部分内容阅读
天然放射性元素铀235以及人造放射性元素钚239被中子分裂的过程,是现代原子核技术的基础。当铀235原子核分裂的时候,有2-3个中子和碎片一起飞出来。每一个中子能够使新的铀核分裂。新的铀核分裂后飞出的中子,就使得更多数目的铀核分裂。像这样越来越多的铀核分裂的过程,就叫做“链式反应”。在链式反应中,有大量的能量产生出来。链式反应只有这种情况下才可以发生:一个铀核分裂後,飞出来的中子
The process of neutron splitting of natural radioactive element uranium 235 and artificial radioactive element plutonium 239 is the basis of modern nuclear technology. When the uranium 235 nuclei split, 2-3 neutrons flew out together with the debris. Each neutron can split the new uranium core. The neutrons that fly out of the new uranium nucleus will split more uranium. More and more uranium nuclear division processes like this are called “chain reactions.” In the chain reaction, a large amount of energy is produced. The chain reaction can only occur in this case: after a uranium nucleus has split, neutrons fly out.