Strong Field Double Ionization of Formaldehyde Investigated Using Momentum Resolved Covariance Imaging and Trajectory Surface Hopping

Abstract

We use covariance velocity map imaging of fragment ions from the strong field double ionization of formaldehyde in conjunction with trajectory surface hopping calculations to determine the ionization yields to different singlet and triplet states of the dication. The calculated kinetic energy release for trajectories initiated on different electronic states is compared with the experimental values based on momentum resolved covariance measurements. We determine the state resolved double ionization yields as a function of laser intensity and pulse duration down to 6 fs (two optical cycles).

Technological developments in mass spectrometry towards molecular structural elucidation of macromolecular assemblies

“…The technological enhancements achieved through the utilization of the active pixelated detectors from the Medipix (MPX)/Timepix (TPX) family (Chapters 2-6) will benefit diverse and broad research fields including fast mass microscopy, structural biology, applied physics, and engineering, where the MPX/TPX detection technology has been applied. 140,145,147,152,[357][358][359][360][361][362][363][364][365][366][367] Through the strong embedding of M4i's detector research within the Medipix consortium at the European Organization for Nuclear Research (CERN, Geneva, Switzerland), the future research will provide new outlets for the expansion of technology developed within this large, international consortium. For instance, the future studies will be benefited from the deployment of Timepix4 138 , the latest detector from the MPX/TPX family, which is the first large area (448 x 512) high-resolution pixel detector readout application-specific integrated circuit (ASIC), which provides significantly higher time-of-arrival (TOA) and time-over-threshold (TOT) resolutions than its predecessors TPX 71,135,290 and TPX3 137,322 ASICs used in this research.…”