Predicting Coulomb explosion fragment angular distributions using molecular ground-state vibrational motion

Abstract

The outcomes of laser-induced Coulomb explosions can be predicted and matched to experiments using the computed vibrational motion of a target molecule.

Multi-mass velocity map imaging study of the 805 nm strong field ionization of CF3I

“…The velocity (and momentum) information encoded in the fragment ion images helps in unravelling this complexity, but the present multi-mass imaging measurements carry time and position of arrival (at the detector) information for all fragments which allows identification of correlated product-pairs (or, at least in principle, even triplets) via analysis of 2-D (and 3-D) covariancemap images. 41,42 Covariance-map imaging methods have already been applied in analysing the CE of CF 3 I molecules following electron impact at collision energies in the range 20-100 eV 43,44 and are here used to provide further insights into dominant two-body and some of the more probable three-body SFI-induced fragmentations of CF 3 I Z+ cations.…”

The kinetic energy of PAH dication and trication dissociation determined by recoil-frame covariance map imaging

“…This analysis method has been described in a number of previous articles. 20–25,33 Briefly, the covariance between two variables, A and B , is defined as the product of their deviations from their mean values:cov( A , B ) = 〈( A − 〈 A 〉) × ( B − 〈 B 〉)〉 = 〈 AB 〉 − 〈 A 〉〈 B 〉where 〈⋯〉 indicates a mean value. For the purposes of applying the technique to ion images, A and B are the ion velocities and the signal for ion A is rotated relative to the position of ion B .…”

“…This analysis method has been described in a number of previous articles. [20][21][22][23][24][25]33 Briefly, the covariance between two variables, A and B, is defined as the product of their deviations from their mean values:…”

The Kinetic Energy of PAH Dication and Trication Dissociation Determined by Recoil-Frame Covariance Map Imaging

“…This analysis method has been described in a number of previous articles. [18][19][20][21][22][23]31 Briefly, the covariance between two variables, A and B, is defined as the product of their deviations from their mean values:…”