Be-11(beta p), a quasi-free neutron decay?
Journal article, 2014
We have observed beta(-)-delayed proton emission from the neutron-rich nucleus Be-11 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 Be-11 halo neutron into a single-proton state.
Halo nucleus
Be-11
Beta decay
Author
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
Andreas Martin Heinz
Chalmers, Fundamental Physics
J. G. Johansen
Björn Jonson
Chalmers, Fundamental Physics
J. Kurcewicz
M. V. Lund
Thomas Nilsson
Chalmers, Fundamental Physics
Göran Hugo Nyman
Chalmers, Fundamental Physics
E. Rapisarda
P. Steier
O. Tengblad
Ronja Thies
Chalmers, Fundamental Physics
S. R. Winkler
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
0370-2693 (ISSN)
Vol. 732 305-308Subject Categories
Subatomic Physics
Physical Sciences
Roots
Basic sciences
DOI
10.1016/j.physletb.2014.03.062