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Creators/Authors contains: "Glorius, J"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Letters)
    The nuclear two-photon or double-gamma ( 2 γ ) decay is a second-order electromagnetic process whereby a nucleus in an excited state emits two gamma rays simultaneously. To be able to directly measure the 2 γ decay rate in the low-energy regime below the electron-positron pair-creation threshold, we combined the isochronous mode of a storage ring with Schottky resonant cavities. The newly developed technique can be applied to isomers with excitation energies down to ∼ 100     keV and half-lives as short as ∼ 10     ms . The half-life for the 2 γ decay of the first-excited 0 + state in bare Ge 72 ions was determined to be 23.9(6) ms, which strongly deviates from expectations. Published by the American Physical Society2024 
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Journal of Physics G: Nuclear and Particle Physics)
    Abstract The study of stellar burning began just over 100 years ago. Nonetheless, we do not yet have a detailed picture of the nucleosynthesis within stars and how nucleosynthesis impacts stellar structure and the remnants of stellar evolution. Achieving this understanding will require precise direct measurements of the nuclear reactions involved. This report summarizes the status of direct measurements for stellar burning, focusing on developments of the last couple of decades, and offering a prospectus of near-future developments. 
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