A systematic comparison of the ($e$,$e^{\prime }$) and ($p$,$p^{\prime }$) transiton strengths for the excitation of unnatural-parity states of "stretched" configurations gives definite information on the high-momentum components of the tensor part of the nucleon-nucleon force. The available data emphasize the isovector part of the tensor force.

• Received 8 March 1979

DOI:https://doi.org/10.1103/PhysRevLett.42.1524