Measurement of Gamow-Teller and spin dipole strength in the 45Sc(n,p)45Ca reaction at 198 MeV☆

Abstract The reaction 45 Sc(n,p) 45 Ca has been studied at an energy of 198 MeV with energy resolution of about 1 MeV. Measurements were carried out at nominal angles 0°, 3°, 6°, 9°, 12°, 15°, 18° and spectra obtained up to ∼40 MeV excitation energy in 45 Ca. Significant Gamow-Teller strength is observed at an excitation energy of about 7 MeV, somewhat higher than predicted by shell-model calculations. The strength observed is in agreement with calculations using g A /g V ⋍ 1 . The spin-dipole giant resonance is seen with centroid at about 15 MeV excitation and total cross section of 25 mb/sr at an angle of 6°.