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the claim
Pear-shaped atomic nuclei are physically possible
the verdict
SUPPORTED
the evidence backs this
confidence 85/100

Extensive experimental and theoretical nuclear physics research confirms that certain atomic nuclei can exhibit stable or dynamic pear shapes due to strong octupole deformations.

Evidence for · 6
Spectroscopy of short-lived radioactive molecules.
2020 · cited by 38
Mentions octupole-deformed radium isotopes possessing pear-shaped nuclear structures.
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More for · 5
Studies of pear-shaped nuclei using accelerated radioactive beams.
2013 · cited by 22
Provides experimental evidence that certain heavy, unstable atomic nuclei are distorted into pear shapes.
Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams.
2020 · cited by 8
Demonstrates stable pear shapes arising from strong octupole correlations in radium nuclei.
Impact of pear-shaped fission fragments on mass-asymmetric fission in actinides.
2018 · cited by 7
Shows that octupole pear-shaped deformations play a key role in actinide fission and fragment asymmetry.
Pear-shaped atomic nuclei.
2020 · cited by 3
Reviews experimental evidence for the occurrence of reflection-asymmetric pear shapes in atomic nuclei.
Rare isotope-containing diamond colour centres for fundamental symmetry tests.
2024 · cited by 2
Discusses rare isotopes predicted to have exceptionally strong nuclear octupole deformation, known as pear-shaped nuclei.
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first checked01 Aug 2026
judged → SUPPORTED · 8501 Aug 2026
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