Calculation of nuclear-spin-dependent parity nonconservation in $s$–$d$ transitions of Ba${}^{+}$, Yb${}^{+}$, and Ra${}^{+}$ ions

We use correlation potential and many-body perturbation theory techniques to calculate spin-independent and nuclear-spin-dependent parts of the parity nonconserving amplitudes of the transitions between the $6s_{1/2}$ ground state and the $5d_{3/2}$ excited state of Ba${}^{+}$ and Yb${}^{+}$ and between the $7s_{1/2}$ ground state and the $6d_{3/2}$ excited state of Ra${}^{+}$. The results are presented in a form convenient for the extracting of the constants of nuclear-spin-dependent interaction (such as, e.g., anapole moment) from the measurements.