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arXiv · 2111.07168

Effect of slicing in velocity map imaging for the study of dissociation dynamics

Narayan Kundu·Dipayan Biswas·Vikrant Kumar·Anirban Paul·Dhananjay Nandi
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Abstract

Inelastic collision dynamics between isolated gas-phase carbon monoxide molecules and low energetic electrons (< 50 eV) has been studied using state-of-the-art velocity map imaging apparatus and reported previously. These were based on data analysis using the time-gated parallel slicing technique, which has recently revealed the drawback of lower momentum ion exaggeration mainly due to the inclusion of whole Newton sphere's of diameter $\le$ parallel slicing time window. To overcome this drawback, we report implementing a wedge slicing technique so that every momentum sphere contributes equally to the statistics. We also present a comparative study between these two techniques by reanalyzing the data using the time-gated parallel slicing technique. Unlike parallel slicing, the wedge slicing technique better represents the dissociation dynamics, particularly for the ions with low kinetic energy.

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Narayan Kundu, Dipayan Biswas, Vikrant Kumar, Anirban Paul, Dhananjay Nandi. 2021-11-13. Effect of slicing in velocity map imaging for the study of dissociation dynamics. https://arxiv.org/abs/2111.07168

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