Two-proton decay from α-cluster states in 10C and 11N

Charity, R. J.; Sobotka, L. G.; Webb, T. B.; Brown, K. W.

doi:10.1103/physrevc.105.014314

Title: Two-proton decay from α-cluster states in ¹⁰C and ¹¹N

Journal Article · 18 January 2022 · Physical Review. C

DOI: https://doi.org/10.1103/physrevc.105.014314 · OSTI ID:1844243

^[1];

^[2]; Webb, T. B. ^[2]; Brown, K. W. ^[3]

Washington Univ., St. Louis, MO (United States); Washington University
Washington Univ., St. Louis, MO (United States)
Washington Univ., St. Louis, MO (United States); Michigan State Univ., East Lansing, MI (United States)

Two-proton decay from excited states in ¹⁰C and ¹¹N has been characterized from an analysis of the 2p + 2α and 3p + 2α exit channels. Data from four previously published invariant-mass studies associated with inelastic excitation, multinucleon knockout, and neutron pickup reactions have been considered. A rotational band in ¹⁰C was identified built on the second 0⁺ state which has strong α-cluster molecular structure. The members of this band were tentatively identified up to J^π = 4⁺ and all identified states have a prompt 2p decay branch. The spins of the 0⁺ and 2⁺ members were deduced from comparisons of the momentum correlations in their 2p branches to those from known 2p emitters. The 2⁺ and the tentative 4⁺ members are both above the α threshold and exhibit large reduced decay widths for α emission. This band exhibits a similar moment of inertia to its analog in the mirror nucleus ¹⁰Be. Evidence is also presented for a molecular band in ¹¹N built on the second 3/2^– state which 2p decays. Furthermore, tentative members of this band have been assigned up to J^π = 9/2^– and their excitation energies also match their likely analogs in the mirror nucleus ¹¹Be.

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Research Organization:: Washington Univ., St. Louis, MO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG02-87ER40316

OSTI ID:: 1844243

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 105; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Title: Two-proton decay from α-cluster states in 10C and 11N

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Title: Two-proton decay from α-cluster states in ¹⁰C and ¹¹N