Search for beta-delayed proton emission from 11 Be
Journal article, 2020

We report on an attempt to reproduce the observation of β--delayed proton emission from 11Be through detection of the final state nucleus 10Be with accelerator mass spectrometry. Twelve samples were collected at the ISOLDE facility at CERN at different separator settings, allowing tests of different sources of contamination to be carried out. The observed amounts of 10Be per collected 11Be rule out several contamination sources, but do not agree internally. Formation of BeH molecular ions in the ion source may explain our data, in which case an upper limit of the βp branching ratio of 2.2 × 10 - 6 can be derived.

Author

K. Riisager

Aarhus University

M. Borge

CERN

CSIC - Instituto de Estructura de la Materia (IEM)

J. A. Briz

CSIC - Instituto de Estructura de la Materia (IEM)

M. Carmona-Gallardo

Complutense University

O. Forstner

University of Vienna

L. M. Fraile

Complutense University

H. O. U. Fynbo

Aarhus University

A. Garzon Camacho

CSIC - Instituto de Estructura de la Materia (IEM)

Jacob G. Johansen

Aarhus University

Björn Jonson

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

M. V. Lund

Aarhus University

J. Lachner

University of Vienna

M. Madurga

CERN

S. Merchel

Helmholtz

E. Nacher

CSIC - Instituto de Estructura de la Materia (IEM)

Thomas Nilsson

Chalmers, Physics

Peter Steier

University of Vienna

O. Tengblad

CSIC - Instituto de Estructura de la Materia (IEM)

V. Vedia

Complutense University

European Physical Journal A

1434-6001 (ISSN) 1434-601X (eISSN)

Vol. 56 3 100

Exotiska nukleära system vid gränsen för existens - fysik i frontlinjen med perspektiv mot FAIR

Swedish Research Council (VR), 2018-01-01 -- 2021-12-31.

Subject Categories

Physical Sciences

DOI

10.1140/epja/s10050-020-00110-2

More information

Latest update

9/15/2020