Be11(βp), a quasi-free neutron decay?

Riisager, K.; Forstner, O.; Borges, M. J. G.; Briz Monago, José Antonio; Carmona Gallardo, Mariano; Fraile Prieto, Luis Mario; Fynbo, H.O.U.; Giles, T.; Gottberg, A.; Heinz, A.; Johansen, J.G.; Jonson, B.; Kurcewicz, J.; Lund, M.V.; Nilsson, T.; Nyman, G.; Rapisarda, E.; Steier, P.; Tengblad, O.; Thies, R.; Winkler, S.R.

Be11(βp), a quasi-free neutron decay?

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https://doi.org/10.1016/j.physletb.2014.03.062

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2014

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Riisager, K.

Forstner, O.

Borges, M. J. G.

Briz Monago, José Antonio

Carmona Gallardo, Mariano

Fraile Prieto, Luis Mario

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Elsevier

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https://hdl.handle.net/20.500.14352/34570

Abstract

We have observed β−-delayed proton emission from the neutron-rich nucleus 11Be by analyzing a sample collected at the ISOLDE facility at CERN with accelerator mass spectrometry (AMS). With a branching ratio of (8.3±0.9)· 10−6 the strength of this decay mode, as measured by the BGT -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.

Be11(βp), a quasi-free neutron decay?

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