本题目来源于试卷: Nuclear Energy; Effects and Uses of Radiation，类别为 IB物理学
[问答题]
Why are neutrons suc- 0;11p0p ifi+jq4xtqbia x6zmq1mnm h good projectiles for producing nuclear rea0t5 cb/9 w9qvym8p pb.5l7 dkrwkshb5ctions?
参考答案:
Neutrons are good projectiles for producing nuclear reactions because they are neutral and they are massive. If you want a particle to hit the nucleus with a lot of energy, a more massive particle is the better choice. A light electron would not be as effective. Using a positively charged projectile like an alpha or a proton means that the projectile will have to overcome the large electrical repulsion from the positively charged nucleus. Neutrons can penetrate directly to the nucleus and cause nuclear reactions.
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