The ${}^{26}\mathrm{Si}(p,\gamma ){}^{27}\mathrm{P}$ reaction might be relevant in understanding the ${}^{26}\mathrm{Si}$ depletion and ${}^{26}\mathrm{Al}$ production in stars. The asymptotic normalization coefficients (ANC) for the ${}^{26}\mathrm{Si}(p,\gamma ){}^{27}\mathrm{P}$ reaction were extracted earlier from the reanalysis of ${}^{26}\mathrm{Mg}(d,p){}^{27}\mathrm{Mg}$ and ${}^{26}\mathrm{Mg}(t,d){}^{27}\mathrm{Mg}$ reactions, in which the deduced ANC's show significant discrepancies. In this work, a dedicated ($d,p$) measurement is presented: the ANC for the ${}^{27}\mathrm{Mg}\to {}^{26}\mathrm{Mg}+n$ virtual decay is deduced from the ${}^{26}\mathrm{Mg}(d,p){}^{27}\mathrm{Mg}$ reaction populating the ground and the first excited state of ${}^{27}\mathrm{Mg}$ using the distorted wave Born approximation (DWBA). The charge symmetry properties for mirror nuclei have been used to calculate the ANC for the direct capture ${}^{26}\mathrm{Si}+p\to {}^{27}\mathrm{P}$ populating the ground state of ${}^{27}\mathrm{P}$. By means of the same formalism, the ${\mathrm{\Gamma }}_p$ width for the first excited state has also been deduced. The reaction rate is also updated using recent values for the ${\mathrm{\Gamma }}_{\gamma }/{\mathrm{\Gamma }}_p$ ratio measured by [Sun et al., Phys. Rev. C 99, 064312 (2019); Sun et al., Phys. Lett. B 802, 135213 (2020)].

Classical novae are thermonuclear explosions in stellar binary systems, and important sources of ²⁶Al and ²²Na. While γ rays from the decay of the former radioisotope have been observed throughout the Galaxy, ²²Na remains untraceable. 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 observation requires good knowledge of its nucleosynthesis. The ²²Na(p, γ)²³Mg reaction remains 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 correlations and velocity-difference profiles to measure femtosecond nuclear lifetimes. The application of this method to the study of the ²³Mg states, places strong limits on the amount of ²²Na produced in novae and constrains its detectability with future space-borne observatories.

Background: The deuteron weak binding energy is responsible for high complexity of the deuteron interaction with nuclei that involves also a variety of reactions initiated by the nucleons following the deuteron breakup (BU). An update of both the scarce experimental deuteron database and the incomplete theoretical frame of the deuteron activation analysis is thus needed. Removal of discrepancies between experimental data, and a consistent inclusion of BU as well as of stripping and pickup direct reactions (DR) contributions within deuteron activation analysis, besides preequilibrium emission (PE) and fully equilibrated compound nucleus (CN) decay, are essential, too.

Numerous domains, in fundamental research as well as in applications, require the study of reactions induced by neutrons with energies from few MeV up to few tens of MeV. Reliable measurements also are necessary to improve the evaluated databases used by nuclear transport codes. This energy range covers a large number of topics like transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors. A new facility called Neutrons For Science (NFS) is being built for this purpose on the GANIL site at Caen (France). NFS is composed of a pulsed neutron beam for time-of-flight facility as well as irradiation stations for cross-section measurements. Neutrons will be produced by the interaction of deuteron and proton beams, delivered by the SPIRAL-2 linear accelerator, with thick or thin converters made of beryllium or lithium. Continuous and quasi-mono-energetic spectra will be available at NFS up to 40 MeV. In this fast energy region, the neutron flux is expected to be up to 2 orders of magnitude higher than at other existing time-of-flight facilities. In addition, irradiation stations for neutron-, proton- and deuteron-induced reactions will allow performing cross-section measurements by the activation technique. After a description of the facility and its characteristics, the experiments to be performed in the short and medium term will be presented.

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