β-decay measurements of ¹²B with Gammasphere

¹ Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
² Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark
³ Laboratorio Tandar, Comisión Nacional de Energía Atómica, B1650KNA Buenos Aires, Argentina
⁴ Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
⁵ Physics Department, Western Michigan University, Kalamazoo, MI 49008, USA
⁶ Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
⁷ Joint Institute for Nuclear Astrophysics, Chicago, IL 60637, USA

^a e-mail: malcorta@gmail.com
^b Present address: Marshall Space Flight Center, Huntsville, Alabama 35811, USA
^c Present address: Physics Department, University of Notre Dame, Notre Dame, Illinois 46556, USA

Published online: 20 March 2014

Abstract

The β−decay branching ratio of ¹²B to the Hoyle state in ¹²C was measured by detection of γ rays. ¹²B nuclei were produced via the ¹¹B(d,p)¹²B reaction in inverse kinematics on a TiD₂ target. The present results corroborate those obtained recently for the β branch by implantation. The value from both experiments is inconsistent with that accepted in the literature.