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Updated: Oct 2, 2026

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
Published on: February 7, 2022
Single rotational product propensity in the photodissociation of HOD
1Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan, Republic of China.
Abstract:
Photodissociation of HOD from the B state has been studied using the high resolution rydberg "tagging" time-of-flight (TOF) technique. The TOF spectra show an unusually strong population (approximately 50%) for a single rotational state for the OD (A(2)Sigma, upsilon = 0) fragments. Through theoretical studies, this phenomenon, which we have labeled the "single rotational product propensity," is attributed to a dynamically constrained threshold effect in the photodissociation of the HOD molecule on the B state.
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