Determine the maximum current produced in a nuclear instrument (boron-lined ion chamber) if 1000 alpha particles per second are produced in the detector, each with an energy of 5.3 mev. the fill gas has an ionization energy of 35.6 ev/ion pair. if the detector has an aluminum casing, what is the thickness necessary to stop these alpha particles. the mass attenuation coefficient for aluminum for alpha particles at this energy is 5.6 mg/em, and the density of aluminum is 2.7 g/em