Person:
Briz Monago, José Antonio

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First Name
José Antonio
Last Name
Briz Monago
URI
https://hdl.handle.net/20.500.14352/86305
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Estructura de la Materia, Física Térmica y Electrónica
Area
Física Atómica, Molecular y Nuclear
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Item Type: Publication × Author: Jonson, B. ×

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Now showing 1 - 2 of 2
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    Sizeable beta-strength in ^31 Ar (β3p) decay
    (Physics letters B, 2014) Koldste, G. T.; Blank, B.; Borge, M. J. G.; Briz Monago, José Antonio; Carmona Gallardo, Mariano; Fraile Prieto, Luis Mario; Fynbo, H. O. U.; Giovinazzo, J.; Johansen, J. G.; Jokinen, A.; Jonson, B.; Kurturkian Nieto, T.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, E.; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Thomas, J. C.; Van de Walle, J.
    We present for the first time precise spectroscopic information on the recently discovered decay mode β-delayed 3p-emission. The detection of the 3p events gives an increased sensitivity to the high energy part of the Gamow–Teller strength distribution from the decay of ^31 Ar revealing that as much as 30% of the strength resides in the β3p-decaymode. Asimplified description of how the main decay modes evolve as the excitation energy increases in ^31 Cl is provided.
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    Be11(βp), a quasi-free neutron decay?
    (Physics Letters B, 2014) 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.
    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.