What is the source of alpha particles in the Rutherford's scattering experiment?
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Rutherford and coworkers were able to demonstrate that the alpha particle was an atom of helium (later to be determined to be a nucleus of helium), and that helium gas would accumulate or be entrapped in minerals that contained radium.
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The initial discovery was made by Hans Geiger and Ernest Marsden in 1909 when they performed the gold foil experiment in collaboration with Rutherford, in which they fired a beam of alpha particles (helium nuclei) at foils of gold leaf only a few atoms thick❤️❤️
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