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Cross-shell excited configurations in the structure of ${}^{34}{Si}$

https://doi.org/10.1103/PhysRevC.109.014309

Lubna, R_S; Garnsworthy, A_B; Tripathi, Vandana; Ball, G_C; Natzke, C_R; Rocchini, M.; Andreoiu, C.; Bhattacharjee, S_S; Dillmann, I.; Garcia, F_H; et al (January 2024, Physical Review C)
Measurement of the Isolated Nuclear Two-Photon Decay in ${}^{72}{Ge}$

https://doi.org/10.1103/PhysRevLett.133.022502

Freire-Fernández, D; Korten, W; Chen, R J; Litvinov, S; Litvinov, Yu A; Sanjari, M S; Weick, H; Akinci, F C; Albers, H M; Armstrong, M; et al (July 2024, 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 $\sim 100 keV$ and half-lives as short as $\sim 10 ms$ . The half-life for the $2 γ$ decay of the first-excited $0^{+}$ state in bare ${}^{72}{Ge}$ ions was determined to be 23.9(6) ms, which strongly deviates from expectations. Published by the American Physical Society2024
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Horizons: nuclear astrophysics in the 2020s and beyond

https://doi.org/10.1088/1361-6471/ac8890

Schatz, H.; Becerril Reyes, A. D.; Best, A.; Brown, E. F.; Chatziioannou, K.; Chipps, K. A.; Deibel, C. M.; Ezzeddine, R.; Galloway, D. K.; Hansen, C. J.; et al (November 2022, Journal of Physics G: Nuclear and Particle Physics)

Abstract Nuclear astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of the field, the new open questions that have emerged, and the tremendous scientific opportunities that have opened up with major advances in capabilities across an ever growing number of disciplines and subfields that need to be integrated. We take a holistic view of the field discussing the unique challenges and opportunities in nuclear astrophysics in regards to science, diversity, education, and the interdisciplinarity and breadth of the field. Clearly nuclear astrophysics is a dynamic field with a bright future that is entering a new era of discovery opportunities.
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