The beta-decay of Ca-36 has been studied at the projectile fragment se
parator at GSI Darmstadt. The measured Gamow-Teller strength function
B(GT), deduced from the observed beta-delayed proton- and gamma-emissi
on and from the measured half-life of 102(2) ms, is compared to result
s obtained from large-scale sd-shell model calculations. A systematic
underestimation of the measured strength by the theory is found.