本题目来源于试卷: Nuclear & Quantum Physics E.1 Atomic Structure，类别为 IB物理学
[单选题]
Alpha particles of kinetic energy K are fired at nuclei of proton number8ou83kq6vy j y wz/ue:iz.x h,Z.
The number of particles scattered at different angles are in agreement with the prediction of Rutherford's scattering model.
Which of the following changes to the values of K and Z will result in a significant deviation from Rutherford's model?
A. Value of K is Decrease ; Value of Z is Increase
B. Value of K is Decrease ; Value of Z is Decrease
C. Value of K is Increase ; Value of Z is Increase
D. Value of K is Increase ; Value of Z is Decrease
参考答案: D
本题详细解析:
Explanation； With more kinetic energy, alpha particles can overcome the electrical potential of the nucleus, and get close enough to experience strong nuclear attraction that is responsible for the deviation from Rutherford's model. A smaller proton number for the target nuclei means a lower positive charge, and hence a lower potential barrier to overcome. Again, this enables alpha particles to approach the nucleus much closer, and increases the chance of strong nuclear interaction, thus causing a deviation from Rutherford's prediction.
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