= Enrico Fermi
{c}
{tag=Physicist}
{title2=1901–1954}
= E. Fermi
{c}
{synonym}
<Enrico Fermi> developed neutron bombardment as a way to create and investigate <radioactive isotopes>. Unlike a charged projectile, a <neutron> does not face the same repulsive <potential barrier> when approaching a positive <atomic nucleus>. Induced <radioactivity> supplies a delayed readout of reactions that occurred during irradiation. His Nobel lecture describes how comparing target materials, projectile conditions and the subsequent decay products connected experimental activation with the structure and transformations of <atomic nuclei>.<Nobel Lectures, Physics 1922–1941/Artificial Radioactivity Produced by Neutron Bombardment>[1938 Nobel lecture, neutron bombardment and induced activity]{ref}
A <physicist>.https://www.nobelprize.org/prizes/physics/1938/fermi/biographical/[Independent professional profile]{ref}
\Image[https://upload.wikimedia.org/wikipedia/commons/3/3c/Enrico_Fermi.jpg]
{title=Portrait of <Enrico Fermi>}
{width=240}
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