Why did Jensen and Goeppert Mayer win the Nobel Prize?
We were awarded the Nobel Prize in Physics in 1963 for our independent yet convergent discoveries concerning the nuclear shell structure. Maria Goeppert Mayer and I both recognized that the magic numbers—2, 8, 20, 28, 50, 82, and 126—could not be explained by a simple central potential alone. The breakthrough came when we each introduced a strong spin-orbit coupling term into the nuclear potential. This coupling, which I derived from analyzing the binding energies of light nuclei, splits the energy levels and creates the observed gaps. Our work provided a unified framework for understanding nuclear stability, spins, and magnetic moments. The experimental results, such as the measured spins of isotopes like oxygen-17, confirmed our theoretical predictions. I am grateful for the collaboration with Maria Goeppert Mayer, as our complementary approaches—hers more mathematically elegant, mine more empirically driven—strengthened the model's acceptance.
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