Scattering of an a-particle by an inverse square field (like produced by a charged nucleus in Rutherford’s model) is shown in figure. If charge of nucleus Z is 79 and kinetic energy of a-particle is 10 MeV, then find the impact parameter. [1]
A. 2.1 x 10-14 m
B. 1.1 x 10-16 m
C. 1.1 x 10-14 m
D. 2.2 x 10-16 m
Answer:C
Scattering of an a-particle by an inverse square field (like produced by a charged nucleus in Rutherford’s model) is shown in figure. If charge of nucleus Z is 79 and kinetic energy of a-particle is 10 MeV, then find the impact parameter. [1]
A. 2.1 x 10-14 m B. 1.1 x 10-16 m C. 1.1 x 10-14 m D. 2.2 x 10-16 m
Explanation: In Rutherford’s model, the impact parameter is given by