HDCO radical dissociation thresholds by velocity map imaging

Abstract

Ground state radical dissociation pathways of HDCO were investigated. Frequencies of rovibrational lines from a variety of vibrational bands of the first singlet excited state over a broad excitation energy range were determined and subsequently used to excite singly deuterated formaldehyde, HDCO. Translational energy release of H and D atoms measured by velocity map imaging was then used to determine accurate threshold energies of 30,448 ± 5 cm⁻¹ for H + DCO and 30,949 ± 3 cm⁻¹ for D + HCO.

GRAPHICAL ABSTRACT

KEYWORDS:

• Formaldehyde
• PHOFEX
• DCO
• bend

Acknowledgements

This work was supported by the Army Research Office under awards W911NF-17-1-0099 and W911NF-1910283.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Army Research Office [grant number W911NF-17-1-0099], [grant number W911NF-1910283].