Cross section of the 32S(α, p) 35Cl nuclear reaction for sulphur determination

Abstract

Differential cross sections of the 32S(α, p x ) 35Cl( x = 0, 1, 2, 3) nuclear reactions were measured in the energy range between 6.0 and 12.0 MeV in steps of 10 to 50 keV for laboratory angles of 60°, 90°, 120°, 135°, 157° and 167° using thin sulphur targets. The targets were prepared by sulphur implantation into carbon with a fluence of 5.0 × 10 17 at./cm 2 and a maximum concentration of about 1.5 × 10 17 at./cm 2 in a depth of 50 nm. The location and concentration of the implanted sulphur were determined by RBS. The differential cross sections at 167° exhibit a steep maximum for the α-particle energy of 6.90 MeV. The reaction was used to determine the concentration of sulphur in different materials.