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Positron binding to alkane molecules

https://doi.org/10.1103/PhysRevA.108.032801

Danielson, J. R.; Ghosh, S.; Arthur-Baidoo, E.; Witteman, D. R.; Surko, C. M. (September 2023, Physical Review A)

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Resonant Annihilation and Positron Bound States in Benzene

https://doi.org/10.1103/PhysRevLett.129.123401

Ghosh, S.; Danielson, J. R.; Surko, C. M. (September 2022, Physical Review Letters)
Enhancement of positron binding energy in molecules containing $π$ bonds

https://doi.org/10.1103/PhysRevA.106.032811

Danielson, J. R.; Ghosh, S.; Surko, C. M. (September 2022, Physical Review A)

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Influence of geometry on positron binding to molecules

https://doi.org/10.1088/1361-6455/ac3e78

Danielson, J R; Ghosh, S; Surko, C M (November 2021, Journal of Physics B: Atomic, Molecular and Optical Physics)

Abstract Annihilation studies have established that positrons bind to most molecules. They also provide measurements of the positron-molecule binding energies, which are found to vary widely and depend upon molecular size and composition. Trends of binding energy with global parameters such as molecular polarizability and dipole moment have been discussed previously. In this paper, the dependence of binding energy on molecular geometry is investigated by studying resonant positron annihilation on selected pairs of isomers. It is found that molecular geometry can play a significant role in determining the binding energies even for isomers with very similar polarizabilities and dipole moments. The possible origins of this dependence are discussed.
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Effect of chlorination on positron binding to hydrocarbons: Experiment and theory

https://doi.org/10.1103/PhysRevA.104.012813

Swann, A. R.; Gribakin, G. F.; Danielson, J. R.; Ghosh, S.; Natisin, M. R.; Surko, C. M. (July 2021, Physical Review A)

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Enhanced Resonant Positron Annihilation due to Nonfundamental Modes in Molecules

https://doi.org/10.1103/PhysRevLett.125.173401

Ghosh, S.; Danielson, J. R.; Surko, C. M. (October 2020, Physical Review Letters)
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