Branching ratios in the beta decays of N-12 and B-12
Journal article, 2009

Absolute branching ratios to unbound states in C-12 populated in the beta decays of N-12 and B-12 are reported. Clean sources of N-12 and B-12 were obtained using the isotope separation on-line (ISOL) method. The relative branching ratios to the different populated states were extracted using single-alpha as well as complete kinematics triple-alpha spectra. These two largely independent methods give consistent results. Absolute normalization is achieved via the precisely known absolute branching ratio to the bound 4.44 MeV state in C-12. The extracted branching ratios to the unbound states are a factor of three more precise than previous measurements. Branching ratios in the decay of Na-20 are also extracted and used to check the results.

n12

alpha-particles

state

b12

c-12

Author

S. Hyldegaard

C. A. Diget

M. J. G. Borge

R. Boutami

P. Dendooven

T. Eronen

S. P. Fox

L. M. Fraile

B. R. Fulton

H. O. U. Fynbo

J. Huikari

H. B. Jeppesen

A. S. Jokinen

Björn Jonson

Chalmers, Applied Physics, Subatomic Physics

A. Kankainen

I. Moore

Göran Hugo Nyman

Chalmers, Applied Physics, Subatomic Physics

H. Penttila

K. Perajarvi

K. Riisager

S. Rinta-Antila

Olof Tengblad

Y. Wang

Katarina Wilhelmsen

Chalmers, Applied Physics, Subatomic Physics

J. Aysto

Physical Review C - Nuclear Physics

0556-2813 (ISSN) 1089-490X (eISSN)

Vol. 80 4

Subject Categories

Subatomic Physics

Astronomy, Astrophysics and Cosmology

DOI

10.1103/PhysRevC.80.044304

More information

Created

10/8/2017