The np Rydberg series of boron monohydride: L-uncoupling and Rydberg electron interactions with the rovibrational motion of the ion core

摘要

A simple two-channel quantum defect theory approach accounts for resonance positions in the np Rydberg series of ~(11)BH. The transition from Hunds case (b) to (d) in the interacting levels of this np series represents a fundamental example of electron orbital cation core rotational coupling, and frame transformation theory offers a means to connect close-coupled electronically excited-state potentials and l-uncoupled Rydberg positions. This evolving interaction of the np Rydberg electron with the rotational and the vibrational motion of the 11BH + core is formulated in terms of quantum defects, μ _λ(v ~+).