2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/92850We extend the concept of confined quantum time of arrival operators, first developed for the free particle [E.A. Galapon, R. Caballar, R. Bahague {\it Phys. Rev. Let.} {\bf 93} 180406 (2004)], to arbitrary potentials.Quantum Physicstext