why rutherford scattering experiment for discovery of nucleus happened in vaccum and why with alpha particles?

Asked by abinash.gupta003 | 10th Mar, 2017, 11:36: AM

Expert Answer:

Reason for vacuum:
It had to be performed in a vacuum because the air would absorb the alpha particles before they hit the foil or before they got to the screen.
Reason for Alpha particles:
1. Alpha particles are small and yet have enough mass to be a suitable missile.
2. They are produced naturally by radioactive nuclides that are alpha emitters and so a steady supply was easy to obtain.

Answered by Arvind Diwale | 10th Mar, 2017, 12:16: PM