6533b86ffe1ef96bd12cdc1b
RESEARCH PRODUCT
Beta decay of 40Sc to proton and alpha-particle unbound states in 40Ca
A. HautojärviJuha ÄYstöM. KortelahtiK. J. EskolaK. VierinenJ. Honkanensubject
PhysicsNuclear and High Energy Physics010308 nuclear & particles physicsStrength functionAlpha particleBranching (polymer chemistry)01 natural sciencesBeta decayCharged particle0103 physical sciencesNuclideAtomic physicsNuclear Experiment010306 general physicsdescription
Delayed charged particle emission associated with the precursor nuclide 40Sc was studied by use of the He-jet technique. Altogether 40 proton groups (1.0 MeV < Ep < 3.7 MeV) and 21 α-particle groups (2.0 MeV < Eα < 4.6 MeV) were observed. Total proton and α-particle branching ratios were measured to be (4.4±0.7) × 10−3 and (0.17±0.05) × 10−3, respectively. Association of the delayed particle emitting levels with the levels observed in resonance reaction studies is discussed. The fact that the most prominent α-particle groups do not have a counterpart in resonance reaction data suggests collectivity or a cluster configuration for the emitting levels. Log ft values (upper limits) for β+ transitions to particle emitting levels were deduced from the measured absolute intensities of the proton and α-particle transitions. Beta strength function is qualitatively discussed in terms of a simple shell-model description.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1982-05-01 | Nuclear Physics A |