The 25Al(p,γ)26Si reaction is part of a reaction
network with impact on the observed galactic 26Al abundance. A new
determination of the proton strength of the lowest ℓ=0 proton-resonance in
26Si is required to more precisely calculate the thermal reaction rate. To
this end, the 25Al(d,n)26Si proton-transfer reaction is
measured in inverse kinematics using an in-flight radioactive beam at the
RESOLUT facility. Excitation energies of the lowest 26Si proton resonances
are measured and cross sections are determined for the lowest ℓ=0
resonance associated with the 33+ state at 5.92(2) MeV. Coupled
reaction channels (CRC) calculations using FRESCO are performed to extract the
ℓ=0 spectroscopic factor for the 33+ state. The proton width for
the 33+ state in 26Si is determined to be Γp=2.19(45) eV
and the (p,γ) resonance strength for the 33+ state is extracted
as 26(10) meV. This resonance dominates the 25Al(p,γ)26Si
reaction rate above 0.2 GK.Comment: 8 pages, 7 figure