RT Journal Article
T1 Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes
A1 Fougères, Chloé
A1 Sánchez Benítez, Ángel Miguel
A1 Zielińska, Magdalena
AB Classical novae are thermonuclear explosions in stellar binary systems, andimportant sources of 26Al and 22Na. While γ rays from the decay of the formerradioisotope have been observed throughout the Galaxy, 22Na remainsuntraceable. Its half-life (2.6 yr) would allow the observation of its 1.275 MeV γ-ray line from a cosmic source. However, the prediction of such an observationrequires good knowledge of its nucleosynthesis. The 22Na(p, γ)23Mg reactionremains the only source of large uncertainty about the amount of 22Na ejected.Its rate is dominated by a single resonance on the short-lived state at 7785.0(7)keV in 23Mg. Here, we propose a combined analysis of particle-particle correlationsand velocity-difference profiles to measure femtosecond nuclear lifetimes.The application of this method to the study of the 23Mg states, placesstrong limits on the amount of 22Na produced in novae and constrains itsdetectability with future space-borne observatories.
PB Springer
SN 2041-1723 (electrónico)
YR 2023
FD 2023-09
LK https://hdl.handle.net/10272/23295
UL https://hdl.handle.net/10272/23295
LA eng
NO Fougères, C., de Oliveira Santos, F., José, J., Michelagnoli, C., Clément, E., Kim, Y. H., Lemasson, A., Guimarães, V., Barrientos, D., Bemmerer, D., Benzoni, G., Boston, A. J., Böttger, R., Boulay, F., Bracco, A., Čeliković, I., Cederwall, B., Ciemala, M., Delafosse, C., … Zielińska, M. (2023). Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes. In Nature Communications (Vol. 14, Issue 1). Springer Science and Business Media LLC. https://doi.org/10.1038/s41467-023-40121-3
NO The authors thank theGANIL accelerator staff for their beam deliveryand support as well as the AGATA collaboration. This work wassupported by the Normandie Region, the European project ChETECINFRA(101008324), ASTRANUCAP IRN, NuAG IRP, SPIRAL2-CZ, andthe U.S. Department of Energy, Office of Science, Office of NuclearPhysics, under contract number DE-AC02-06CH11357. This workwas also partially supported by the MINECO grants PID2020-117252GB-I00, PID2020-118265GB-C41 and PID2020-118265GB-C44,and by the AGAUR/Generalitat de Catalunya grant SGR-386/2021.V.G. would like to thank S~ao Paulo Research Foundation (FAPESP)(grant 2016/02863-4) and CNPq (grant 302969/2013-6). Y.H.K.would like to acknowledge the support of the Institute for BasicScience (IBS-R031-D1). M.S. would like to acknowledge that thiswork has been partially supported by the OASIS project no. ANR-17-CE31-0026.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026