Deduced Mass Excess for ⁹N

Mass excess: 44.8 ± 0.1 MeV from Sp= -2.5 ± 0.1 MeV (2023Ch46)

Theoretical (based on Gamow Shell Model) Estimate of Ground-State Γ_c.m. for ⁹N

Γc.m.: 1.74 MeV (2023Ch46, see supplement material: Table S1)

2023Ch46: ⁹Be(¹³O, ⁹N), E = 69.5 MeV/nucleon; the 4p+α sub-events were analyzed and a ⁸C peak was found at the expected energy, confirming a decay mode via ⁸C. The authors deduced spin-parities and center-of-mass one-proton separation energy for the ground and first excited states of ⁹N.

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Last modified: 27 November 2023