The 6~Li((22)~Ne,(26)~Mg)d a-transfer experiment for the study of low-energy resonances in (22)~Ne(α,γ)(26)~Mg

摘要

While the reaction (22)~Ne(α,n)~(25)Mg is considered an important neutron source for the s process in massive stars, the competing (22)~Ne(α,γ)(26)~Mg reaction may be of considerable strength and could significantly suppress the neutron production. For a better understanding of this neutron source, the branching ratio of n and γ partial widths (τ_n, τ_γ) and spectroscopic information such as energies and spins of (26)~Mg resonance states within the Gamow window (E_α = 400-1000 keV) should be experimentally determined with improved accuracy. In the present work, we propose to use the 6~Li((22)~Ne, (26)~Mg)d α-transfer reaction to investigate those resonance parameters and have tested the feasibility of the experiment.