Terminating bands in 9 8 , 9 9 , 1 0 0 Ru nuclei: New information on the neutron 2 d 5 / 2 and 1 g 7 / 2 energy spacing

High-spin states of ${}^{98,99,100}\\mathrm{Ru}$ have been populated using the reaction ${}^{70}\\mathrm{Zn}{(}^{36}\\mathrm{S},\\ensuremath{\\alpha}\\mathrm{x}n)$ at 130 MeV. The $\\ensuremath{\\gamma}$ rays have been detected with the EUROGAM-2 array. New high-spin bands have been established in these nuclei and interpreted as terminating configurations using the Nilsson-Strutinsky cranking formalism. These bands were observed up to the predicted terminating states which are built from ${g}_{9/2}$ protons and $N=3$ proton holes combined with ${d}_{5/2},$ ${g}_{7/2},$ and ${h}_{11/2}$ neutrons relative to a ${}^{90}\\mathrm{Zr}$ core. Core-excited configurations with $N=3$ proton holes have been found to play an important role. The observed high-spin states assigned as terminating show systematic behavior and provide new information on the energy spacing between the ${2d}_{5/2}$ and ${1g}_{7/2}$ neutron subshells.