Calculate the stopping power in aluminum for a 6-MeV alpha particle.
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- The linear absorption coefficient for 5-MeV gamma rays in lead is 78 m-1. Find the thickness of lead required to reduce by one- fourth the intensity of beam of such gamma rays. O A. 8.9 mm O B. 17.8 mm OC. 3.7 mm OD. 1.9 mm O E. 7.4 mmCompute the approximate nuclear radius of: U (ن) (d) Nit -12 I allatiun c Actinium-89Alpha particles with energy 4.25 MeV interact with gas molecules in ion – chamber and produced 300 particles /second. If the particles lose all its energy in the ion – chamber, the ionization energy is 35 eV, what is the current produced by these particles? Find the resistance that must be connected in series with the ion chamber for the voltage difference to be 0.1 and 1 V?