Evidence of a new state in Be-11 observed in the Li-11 beta-decay
Artikel i vetenskaplig tidskrift, 2009

Coincidences between charged particles emitted in the beta-decay of Li-11 were observed using highly segmented detectors. The breakup channels involving three particles were Studied in full kinematics allowing for the reconstruction of the excitation energy of the Be-11 states participating in the decay. In particular, the contribution of a previously unobserved state at 16.3 MeV in Be-11 has been identified selecting the alpha + He-7 -> alpha + He-6 + n channel. The angular correlations between the alpha particle and the center of mass of the He-6 + n system favors spin and parity assignment of 3/2(-) for this state as well as for the previously known state at 18 MeV. (C) 2009 Elsevier B.V. All rights reserved.

identification of new level in be-11

particles

x)]

measured beta-delayed he-4

gamma

emission

halo structure

charged particles coincidences

radioactivity li-11(beta(-)) [from ta(p

he-6 energy

spin and parity assignment

light-nuclei

radioactivity

energy-levels

partial decay branches

Författare

M. Madurga

Consejo Superior de Investigaciones Científicas (CSIC)

M. J. G. Borge

Consejo Superior de Investigaciones Científicas (CSIC)

M. Alcorta

Consejo Superior de Investigaciones Científicas (CSIC)

L.M. Fraile

Universidad Complutense de Madrid

H. O. U. Fynbo

Aarhus Universitet

Björn Jonson

Chalmers, Teknisk fysik, Subatomär fysik

O. Kirsebom

Aarhus Universitet

G. Martinez-Pinedo

Helmholtz

Thomas Nilsson

Chalmers, Teknisk fysik, Subatomär fysik

Göran Hugo Nyman

Chalmers, Teknisk fysik, Subatomär fysik

A. Perea

Consejo Superior de Investigaciones Científicas (CSIC)

A. Poves

Universidad Autonoma de Madrid (UAM)

K. Riisager

Aarhus Universitet

Olof Tengblad

Consejo Superior de Investigaciones Científicas (CSIC)

Elisabeth Tengborn

Chalmers, Teknisk fysik, Subatomär fysik

J. Van der Walle

CERN

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

0370-2693 (ISSN)

Vol. 677 5 255-259

Ämneskategorier (SSIF 2011)

Subatomär fysik

DOI

10.1016/j.physletb.2009.05.050

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Senast uppdaterat

2025-03-09