Quantum-resolved dynamics of excited states. Part 2.—Stable levels of the B3Π(0+) state of BrF

Abstract

The stable, lower vibrational levels (v′⩽ 6) of the excited B³Π(0⁺) state of ⁷⁹BrF have been investigated. Laser induced fluorescence has been used to identify individual vibrational and rotational states, as well as to determine their zero-pressure lifetimes τ₀ involving the B³Π(0⁺)–X¹Σ⁺ transition.

As a result of this and other work, the vibrational and rotational energies of all accessible states in the B³Π(0⁺) manifold of ⁷⁹BrF are known, and a detailed knowledge of the variation of τ₀ with v′ and J′ has been obtained. For levels v′⩽ 6, all states are essentially unperturbed, with non-collisional lifetimes τ₀ in the range (26.8 ± 2.1) to (40.6 ± 6.9)µs.