I thought about it. But we can think as following:
You have a target of mass m, therefore N atoms. You have I particles come to the target. In this case, R ~ I and N, so if you increase N, R increase, even if particle can not penetrate the whole target.
Dear all,
As we know, the reaction rate can be calculated as following:
R = N * σ * Φ (1)
Where R is reaction rate (events/s/cm3)
σ is cross section (cm2)
Φ is flux of incident particle beam (particles/s/cm2
N is density of target (atoms/cm3)
Logically, there is a limitation of R, because...