This is in accordance with the model for collective motion (based on nuclei deformed from a spherical shape, but with axial symmetry) for which Aage Bohr, Ben Roy Mottelson and James Rainwater won the 1975 Nobel Prize.
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In 1955, cooperating with Kurt Alder and Ben Roy Mottelson, Alaga discovered the K-selection rules and intensity rules for beta and gamma transitions in deformed atom nuclei.