Measurement of the ²⁵Mg(p,gamma)²⁶Al reaction at stellar energies

Stellar nuclear reactions, generally occurring at energies well below the Coulomb barrier, have extremely low cross sections posing a very difficult task for theri determination using the usual promt gammy-ray detection method. We describe here the application of the highly sensitive Accelerator Mass Spectrometry technique (AMS) as an alternative method for the determination of the resonance strenghts of the ²⁵Ma(p,gamma) reaction, by off-line counting of the produced ²⁶Al nuclei.