J. Humblet

[alpha] spectrum from [sup 16]N [beta] decay and the [sup 12]C([alpha],[gamma])[sup 16]O reaction

New data on the spectrum of [alpha] particles following the [sup 16]N [beta] decay are used to revise and extend a previous evaluation of the [ital E]1 part of the astrophysical [ital S] factor for the [sup 12]C([alpha],[gamma])[sup 16]O reaction.

α spectrum from N16 β decay and the C12(α,γ)16O reaction

New data on the spectrum of [alpha] particles following the [sup 16]N [beta] decay are used to revise and extend a previous evaluation of the [ital E]1 part of the astrophysical [ital S] factor for the [sup 12]C([alpha],[gamma])[sup 16]O reaction.

α spectrum fromN16β decay and theC12(α,γ)16O reaction

New data on the spectrum of [alpha] particles following the [sup 16]N [beta] decay are used to revise and extend a previous evaluation of the [ital E]1 part of the astrophysical [ital S] factor for the [sup 12]C([alpha],[gamma])[sup 16]O reaction.

alpha spectrum from N-16 beta decay and the C-12 (alpha, gamma) O-16 reaction

New data on the spectrum of [alpha] particles following the [sup 16]N [beta] decay are used to revise and extend a previous evaluation of the [ital E]1 part of the astrophysical [ital S] factor for the [sup 12]C([alpha],[gamma])[sup 16]O reaction.

Level matrix,N16β decay, and theC12(α,γ)16O reaction

The level matrix corresponding to the {ital scrK}-matrix parametrization of a resonant nuclear reaction is derived and applied to the spectrum of {alpha} particles emitted following {sup 16}N {beta} decay. The parametrized spectrum is fitted to data simultaneously with the {ital E}1 capture cross section of the {sup 12}C({alpha},{gamma}){sup 16}O reaction and the {ital p}-wave phase shift of {sup 12}C({alpha},{alpha}){sup 12}C. Our analysis shows that new measurements of the {alpha} spectrum from {sup 16}N {beta} decay could be used to significantly reduce the uncertainty of the {sup 12}C({alpha},{gamma}){sup 16}O astrophysical {ital S} factor at 0.3 MeV. Various constraints on the parameters are analyzed and suggestions are made for further reducing the uncertainty in this crucial reaction rate.

Level matrix, N16 decay, and the C12(,)16O reaction

The level matrix corresponding to the {ital scrK}-matrix parametrization of a resonant nuclear reaction is derived and applied to the spectrum of {alpha} particles emitted following {sup 16}N {beta} decay. The parametrized spectrum is fitted to data simultaneously with the {ital E}1 capture cross section of the {sup 12}C({alpha},{gamma}){sup 16}O reaction and the {ital p}-wave phase shift of {sup 12}C({alpha},{alpha}){sup 12}C. Our analysis shows that new measurements of the {alpha} spectrum from {sup 16}N {beta} decay could be used to significantly reduce the uncertainty of the {sup 12}C({alpha},{gamma}){sup 16}O astrophysical {ital S} factor at 0.3 MeV. Various constraints on the parameters are analyzed and suggestions are made for further reducing the uncertainty in this crucial reaction rate.

Level matrix, N-16 beta decay, and the C-12 (alpha, gamma) O-16 reaction

The level matrix corresponding to the {ital scrK}-matrix parametrization of a resonant nuclear reaction is derived and applied to the spectrum of {alpha} particles emitted following {sup 16}N {beta} decay. The parametrized spectrum is fitted to data simultaneously with the {ital E}1 capture cross section of the {sup 12}C({alpha},{gamma}){sup 16}O reaction and the {ital p}-wave phase shift of {sup 12}C({alpha},{alpha}){sup 12}C. Our analysis shows that new measurements of the {alpha} spectrum from {sup 16}N {beta} decay could be used to significantly reduce the uncertainty of the {sup 12}C({alpha},{gamma}){sup 16}O astrophysical {ital S} factor at 0.3 MeV. Various constraints on the parameters are analyzed and suggestions are made for further reducing the uncertainty in this crucial reaction rate.

Level matrix, sup 16 N. beta. decay, and the sup 12 C(. alpha. ,. gamma. ) sup 16 O reaction

The level matrix corresponding to the {ital scrK}-matrix parametrization of a resonant nuclear reaction is derived and applied to the spectrum of {alpha} particles emitted following {sup 16}N {beta} decay. The parametrized spectrum is fitted to data simultaneously with the {ital E}1 capture cross section of the {sup 12}C({alpha},{gamma}){sup 16}O reaction and the {ital p}-wave phase shift of {sup 12}C({alpha},{alpha}){sup 12}C. Our analysis shows that new measurements of the {alpha} spectrum from {sup 16}N {beta} decay could be used to significantly reduce the uncertainty of the {sup 12}C({alpha},{gamma}){sup 16}O astrophysical {ital S} factor at 0.3 MeV. Various constraints on the parameters are analyzed and suggestions are made for further reducing the uncertainty in this crucial reaction rate.