An particle beam of kinetic energy E 6 MeV and intensity R i 10 3 s 1 goes through a gold foil (Z 79, A 197, 1 93 X 10 4 kg m 3 ) of thickness t 1 m Calculate the number of particles per unit time scattered at angles larger than 0 1 rad

Question: An particle beam of kinetic energy E = 6 MeV and intensity R i = 10 3 s -1 goes through a gold foil

An α particle beam of kinetic energy E = 6 MeV and intensity R_i= 10³ s^-1 goes through a gold foil (Z = 79, A = 197, ρ = 1.93 X 10⁴ kg m^-3) of thickness t = 1 μm. Calculate the number of particles per unit time scattered at angles larger than 0.1 rad.

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