¹¹Be(βp), a quasi-free neutron decay?

Autor(en)

K. Riisager, O. Forstner, M. J. G. Borge, J. A. Briz, M. Carmona-Gallardo, L. M. Fraile, H. O. U. Fynbo, T. Giles, A. Gottberg, A. Heinz, J. G. Johansen, B. Jonson, J. Kurcewicz, M. V. Lund, T. Nilsson, G. Nyman, E. Rapisarda, P. Steier, O. Tengblad, R. Thies, Stephan Winkler

Abstrakt

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 B_GT-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.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Aarhus University, European Organization for Nuclear Research (CERN), Spanish National Research Council (CSIC), Universidad Complutense De Madrid, Chalmers University of Technology, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

Band

732

Seiten

305-308

Anzahl der Seiten

4

ISSN

0370-2693

DOI

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

Publikationsdatum

05-2014

Peer-reviewed

Ja

ÖFOS 2012

103014 Kernphysik

Schlagwörter

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9c404ffe-0605-4004-bfaa-d9f654c41b6b