Precise half-life measurement of the superallowed β+ emitter 10C
The half-life of '°C has been measured to be 19.310(4) s, a result with 0.02% precision, which is a factor of three improvement over the best previous result. Since 10 C is the lightest superallowed 0 + → 0 + β + emitter, its ft value has the greatest weight in setting an upper limit on the possible presence of scalar currents.
Energy levels of A = 21−44 nuclei (V)
Abstract The experimentally determined properties of the A = 21–44 nuclei are compiled and evaluated, special emphasis being given to nuclear structure. Separate tables for each of the nuclides reviewed give all available information about the following properties in this order: - excitation energies (Ex), • - γ-ray branching ratios, • - γ-ray mixing ratios (δ), • - lifetimes (τm) or widths (Λ), • - spin and parity (Jπ) and isospin (T) assignments, and • - any other data, on single-particle transfer, resonance levels, etc. The “best” (or adopted) values for Ex, τm or Λ, Jπ and T are summarized in a master table. The review of each A-chain concludes with - a discussion of isospin multiplets, • - a few remarks about the experimental situation, and • - a compilation of references to relevant theoretical papers.
Compound nucleus formation in the 14N + 16O system
The formation of the 30P compound nucleus by the 14N + 16O incident channel has been studied from E(14N) = 20 to 60 MeV lab. The population of individual states observed in the d + 28Si and 6Li + 24Mg outgoing channels are compared to predictions of the Hauser-Feshbach statistical model. For incident energies higher than 30 MeV the maximum angular momenta contributing to the fusion process are found smaller than the grazing angular momenta available in the incoming channel. Tome 38 Neo 10 OCTOBRE 1977 LE JOURNAL DE PHYSIQUE