Study of the β-delayed neutron emissions of <sup>11</sup>Li using the DESCANT and GRIFFIN arrays at TRIUMF
ORAL
Abstract
Systems that undergo two-neutron (2n) emission can help probe n-n correlations. Typically, these studies involve unbound nuclei decaying immediately via 2n emission, but statistics is limited. Alternatively, 11Li, a 2n halo nucleus with a relatively large β-2n decay probability, may provide higher statistics to study 2n emissions, albeit with a complex mixture of sequential and simultaneous emission. At TRIUMF, we used the GRIFFIN γ-ray and DESCANT neutron detector arrays to study 1n and 2n emissions following the β-decay of 11Li. Our goal is to clarify discrepancies in the β-1n spectrum measured in previous studies and to study possible 2n pathways. I will present the β-delayed 1n and 2n spectra using a simple cross-talk rejection model and demonstrate how β–γ–n coincidences can also be used to identify specific decay paths.
*This work is partly funded by DOE grant DE-FG02-93ER40789 (Colorado School of Mines). The GRIFFIN infrastructure is jointly funded by Canada Foundation for Innovation (CFI), British Columbia Knowledge Development Fund (BCKDF), Ontario Ministry of Research and Innovation (ON-MRI), TRIUMF and University of Guelph. Ongoing maintenance and operation at GRIFFIN is funded through a Natural Sciences and Engineering Research Council of Canada (NSERC) subatomic physics grant. DESCANT is supported by NSERC and CFI. TRIUMF receives federal funding through National Research Council Canada (NRC).
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Presenters
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Akanksha R Singh
- Colorado School of Mines