Are there nuclear structure effects on the isoscalar giant monopole resonance and nuclear incompressibility near A∼90?

“Background-free” spectra of inelastic α-particle scattering have been measured at a beam energy of 385 MeV in 90,92Zr and 92Mo at extremely forward angles, including 0°. The ISGMR strength distributions for the three nuclei coincide with each other, establishing clearly that nuclear incompressibility is not influenced by nuclear shell structure near A∼90 as was claimed in recent measurements.