Exploring the Low-Z Shore of the Island of Inversion at N=19
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American Physical Society
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Abstract
The technique of invariant mass spectroscopy has been used to measure, for the first time, the ground state energy of neutron-unbound 28F, determined to be a resonance in the 27F+n continuum at 220(50) keV. States in 28F were populated by the reactions of a 62MeV/u 29Ne beam impinging on a 288 mg/cm2 beryllium target. The measured 28F ground state energy is in good agreement with USDA/USDB shell model predictions, indicating that p f shell intruder configurations play only a small role in the ground state structure of 28F and establishing a low-Z boundary of the island of inversion for N = 19 isotones. Keywords: Binding energies and masses; Single-particle levels and strength functions
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Binding energy
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Christian, G., et al. “Exploring the Low-Z Shore of the Island of Inversion at N=19.” Physical Review Letters, vol. 108, no. 3, American Physical Society, Jan. 2012, p. 032501
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