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The observation of long-range three-body Coloumb effects in the decay of 16Ne

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arxiv 1406.3285 v3 pith:4WT2NOIJ submitted 2014-06-12 nucl-ex nucl-th

The observation of long-range three-body Coloumb effects in the decay of 16Ne

classification nucl-ex nucl-th
keywords decayinteractionlong-rangeresolutionthree-bodyallowarraybeam
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The interaction of an $E/A$=57.6-MeV $^{17}$Ne beam with a Be target was used to populate levels in $^{16}$Ne following neutron knockout reactions. The decay of $^{16}$Ne states into the three-body $^{14}$O+$p$+$p$ continuum was observed in the High Resolution Array (HiRA). For the first time for a 2p emitter, correlations between the momenta of the three decay products were measured with sufficient resolution and statistics to allow for an unambiguous demonstration of their dependence on the long-range nature of the Coulomb interaction. Contrary to previous experiments, the intrinsic decay width of the $^{16}$Ne ground state was found to be narrow ($\Gamma<60$~keV), consistent with theoretical estimates.

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