Three-body fragmentation of formic acid dications and trications produced by strong-field ionization
ORAL
Abstract
Formic acid is amenable to the study of three- and four-body molecular dynamics because it is a relatively complex molecule despite having only five atoms. Here we highlight coincidence momentum imaging measurements of two fragmentation channels of HCOOD following multiple ionization by 780 nm, 25 fs, 2×1015 W/cm2 laser pulses. Triple ionization leading to D+ + O+ + HCO+ occurs via concerted breakup as well as two sequential processes, proceeding via either O+ + HDCO2+ or D+ + HCO22+ intermediates. The two sequential processes are identified and separated using the native frames analysis method. Double ionization leading to H + D + CO+ + O+ proceeds through the metastable CO22+ intermediate following double hydrogen elimination, leading to fragmentation to CO+ + O+ over a range of timescales.
*Augustana University personnel are supported by NSF grant PHYS-2309192. J.R. Macdonald Laboratory personnel and equipment are supported by U.S. Department of Energy grant #DE-FG02-86ER13491.
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Publication: A submission to PRA is expected
Presenters
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Lucy Bartee
- Augustana University