Inelastic scattering E4 transition probabilities in the 0d, 1s shell

Theoretical E4 transition matrix elements calculated in the full d/sub 5/2/-s/sub 1/2/-d/sub 3/2/ shell-model space are presented for excitations of some ground states of stable nuclei for 18 < or = A < or = 38. These matrix elements have been used to calculate inelastic transition probabilities for electromagnetic and hadronic probes. Available data on the relative magnitudes and energy distributions of E4 excitation strengths are found to be well reproduced theoretically thereby. Based on several experimentally measured transition strengths, the empirical isoscalar E4 effective charge is found to be e/sub p/+e/sub n/2.0=(ts +- 0.2)e. This is similar in magnitude to the analogous isoscalar E2 effective charge, but is much larger than existing theoretical estimates