An alternative method for the measurement of stellar nuclear-reaction rates

J. FERNÁNDEZ NIELLO; A. ARAZI; T. FAESTERMANN; K. KNIE; G. KORSCHINEK; E. RICHTER; G. RUGEL; A. WALLNER

BRAZILIAN JOURNAL OF PHYSICS

Brazilian Physical Society

Año: 2003 vol. 33 p. 218 - 222

0103-9733

For charged-particle induced reactions occurring in astrophysical scenarios, projectile energies are usually well below the Coulomb barrier of the reacting system. Hence, extremely small cross section reactions pose a difficult task for laboratory measurements. Most commonly, these energy-dependent cross sections are studied by detecting the emitted prompt gamma rays following the de-excitation of the produced compound nucleus. In this work we propose an alternative way for the measurement of the extremely small cross sections of the 25Mg(p,gamma)26Al resonant reaction, namely the use of the Accelerator Mass Spectrometry (AMS) technique.