Nuclear Energy; Effects and Uses of Radiation (id: 693ae63fc)

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]
How can a neutron, woj. w; vfn0mwg;f01cv ith practically no kinetic energy, excite a nt,e3 fry. ) qum786rfo89rvc)r kmrzcucleus to the extent shown in (Fig. B 7,ef8ufr or)cr)r. 8 z3qvktc69rymmelow)?

参考答案:
First of all, the neutron can get close to the nucleus at such slow speeds due to the fact that it is neutral and will not be electrically repelled by either the electron cloud or the protons in the nucleus. Then, once it hits a nucleus, it is held due to the strong nuclear force. It adds more energy than just kinetic energy to the nucleus due to E = m$c^2$. This extra amount of mass-energy leaves the nucleus in an excited state. To decay back to a lower energy state, the nucleus will fission.


本题详细解析: 暂无

微信扫一扫，分享更方便