11Be(beta-p), a quasi-free neutron decay?

Abstract

We have observed beta-delayed proton emission from the neutron-rich nucleus 11Be by analysing a sample collected at the ISOLDE facility at CERN with accelerator mass spectrometry (AMS). With a branching ratio of (8.4 +- 0.6) 10^{-6} the strength of this decay mode, as measured by the B(GT)-value, is unexpectedly high. The result is discussed within a simple single-particle model and could be interpreted as a quasi-free decay of the 11Be halo neutron into a single-proton state.

6 pages, 2 figures

References in corpus (6)

• Radioactive decays at limits of nuclear stability
• Halos and related structures
• Halo nucleus Be-11: A spectroscopic study via neutron transfer
• Rare $\beta$p decays in light nuclei
• Beta-delayed deuteron emission from 11Li: decay of the halo
• The strength of beta-decays to the continuum

Cited by in corpus (18)

• Dark Matter Interpretation of the Neutron Decay Anomaly
• Direct observation of proton emission in 11Be
• On the possibility to observe neutron dark decay in nuclei
• Convenient location of a near-threshold proton-emitting resonance in ${}^{11}$B
• Neutron Stars with Baryon Number Violation, Probing Dark Sectors
• Neutron Star Stability in Light of the Neutron Decay Anomaly
• Neutron's Dark Secret
• Search for beta-delayed proton emission from ${}^{11}$Be
• Clarification of large-strength transitions in the beta decay of 11Be
• The Multi-Dimensional Character of Core-Collapse Supernovae
• Neutron Dark Decay
• Assessment of the beta-delayed proton decay rate of ${}^{11}$Be
• $\beta$-delayed proton emission from ${}^{11}$Be in effective field theory
• Neutron lifetime anomaly and mirror matter theory
• Search for a neutron dark decay in ${}^6$He
• ${\beta }^{-}\mathrm{p}$ and ${\beta }^{-}\alpha$ decay of the ${}^{11}$Be neutron halo ground state
• Single-particle properties of the near-threshold proton-emitting resonance in ${}^{11}$B
• Weak decay of halo nuclei