Beta-delayed deuteron emission from 11Li: decay of the halo

Abstract

The deuteron-emission channel in the beta-decay of the halo-nucleus 11Li was measured at the ISAC facility at TRIUMF by implanting post-accelerated 11Li ions into a segmented silicon detector. The events of interest were identified by correlating the decays of 11Li with those of the daughter nuclei. This method allowed the energy spectrum of the emitted deuterons to be extracted, free from contributions from other channels, and a precise value for the branching ratio B_d = 1.30(13) x 10-4 to be deduced for E(c.m.) > 200 keV. The results provide the first unambiguous experimental evidence that the decay takes place essentially in the halo of 11Li, and that it proceeds mainly to the 9Li + d continuum, opening up a new means to study of the halo wave function of 11Li.

arXiv comment4 pages, 3 figures

References in corpus (4)

• Analysis of the ${}^6$He $\beta$ decay into the $\alpha +d$ continuum within a three-body model
• Microscopic description of the beta delayed deuteron emission from \bbox{^6}He
• An explanatory study of ${}^{11}$Li $\beta$ decay into ${}^9$Li and deuteron
• 11Li beta decay into 9Li and deuteron within a three-body model

Cited by in corpus (12)

• Radioactive decays at limits of nuclear stability
• Dark Matter Interpretation of the Neutron Decay Anomaly
• Halos and related structures
• 11Be(beta-p), a quasi-free neutron decay?
• Direct observation of proton emission in 11Be
• On the possibility to observe neutron dark decay in nuclei
• Beta delayed emission of a proton by a one-neutron halo nucleus
• Clarification of large-strength transitions in the beta decay of 11Be
• Measurement of the branching ratio for beta-delayed alpha decay of 16N
• Multi-neutron transfer in ${}^8$He induced reactions near the Coulomb barrier
• A unique decay process: beta delayed emission of a proton and a neutron by the ${}^{11}$Li halo nucleus
• Three-body calculations of beta decay applied to ${}^{11}$Li