Shift and width of the pionic 3d state in Ta, Re and Bi

Strong interaction monopole and quadrupole shifts and widths of the 4f and 3d levels have been measured in Ta, Re and Bi, by observing the pionic 4f→3d X‐ray transition. Thus in addition to the strongly shifted and broadened 5g→4f transitions a second strongly affected line is available for these elements. In contrast to the pionic 4f level data, the strong interaction shifts and widths of the deeper lying 3d level differ typically by a factor two or more from the standard optical potential predictions.