We address the microscopic origin of the low-energy enhancement (LEE) in ${}^{50}\mathrm{V}$ with large-scale shell-model calculations to obtain $E1$ and $M1$ transitions within the same theoretical framework. The valence space spans the three major shells $sd, pf$, and $sdg$ and is treated with the SDPFSDG-MU interaction using the kshell code. With a $1\hslash \omega$ truncation, 3600 energy eigenstates and a basis of $7.02\times {10}^6$ positive- and $5.94\times {10}^8$ negative-parity states, the calculations yield nearly two million individual dipole transitions. The fourteen lowest experimental levels are reproduced within 0.30 MeV, the calculated total level density excellently reproduces Oslo-method data up to $E\approx 7.5$ MeV, and the calculated dipole gamma strength function follows the experimental shape—including the LEE—for the full gamma-energy range covered by the Oslo experiment. The LEE is shown to be entirely magnetic dipole in origin. Both spin and orbital parts of the $\widehat{M}1$ operator are required to reproduce the LEE, with constructive interference between the spin and orbital parts giving an extra enhancement to the LEE. Reduced one-body transition densities identify $0f_{7/2}\to 0f_{7/2}$ proton transitions as the principal driver of the LEE.

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• Electromagnetic transitions
• Energy levels
• Nuclear structure & decays
• 39 ≤ A ≤ 58
• Shell model