6533b85cfe1ef96bd12bc76a
RESEARCH PRODUCT
Branching ratios in theβdecays ofN12andB12
B. R. FultonKari PerajarviH. O. U. FynboTommi EronenJ. ÄYstöC. Aa. DigetHenrik B. JeppesenIain MooreK. WilhelmsenMaría José García BorgeAnu KankainenK. RiisagerHeikki PenttiläA. JokinenYimin WangSami Rinta-antilaL. M. FraileJussi HuikariPeter DendoovenOlof TengbladGöran Hugo NymanS. HyldegaardR. BoutamiBjörn JonsonS. P. Foxsubject
Nuclear physicsPhysicsNormalization (statistics)Nuclear and High Energy PhysicsBranching fractionlawDouble beta decayCarbon-12Alpha particleBeta decaySpectral lineIsotope separationlaw.inventiondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-10-07 | Physical Review C |