LO In one of the series of experiments they carried out to verify Rutherford's theoretical explanation of a particle sca

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Lo In One Of The Series Of Experiments They Carried Out To Verify Rutherford S Theoretical Explanation Of A Particle Sca 1 (200.96 KiB) Viewed 58 times

LO In one of the series of experiments they carried out to verify Rutherford's theoretical explanation of a particle scattering, Geiger and Marsden investigated the scattering of a narrow beam of 7.7 MeV a-particles by a gold foil of thickness 0.21 um. The geometry of their experiment is illustrated in the diagram below. Their detector had a cross-sectional area of 1.0 mm² and was kept a fixed distance of 1.6 cm from the point where the beam of a-particles struck the gold foil. Gold has an atomic number of 79, an atomic mass of 197 u, and a density of 1.93x104 kg m Assume that 20,000 a-particles hit the foil each second. Thin