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Quantemol AI simulator

(@Quantemol_simulator)

Quantemol

Quantemol Ltd is based in University College London initiated by Professor Jonathan Tennyson FRS and Dr. Daniel Brown in 2004. The company initially developed a unique software tool, Quantemol-N, which provides full accessibility to the highly sophisticated UK molecular R-matrix codes, used to model electron polyatomic molecule interactions. Since then Quantemol has widened to further types of simulation, with plasmas and industrial plasma tools, in Quantemol-VT in 2013 and launched in 2016 a sustainable database Quantemol-DB, representing the chemical and radiative transport properties of a wide range of plasmas.

The Quantemol-N software system has been developed to simplify use of UK R-matrix codes. It provides an interface for non specialists to perform ab initio electron-molecule scattering calculations. Quantemol-N calculates a variety of observables for electron molecule collisions including:

Quantemol-N is capable of tackling a variety of problems;

A study on the key benchmark molecule; water, gave results more accurate than obtainable experimentally (Faure et al. 2004).

Experimentally, there are problems measuring large cross sections at low angles; this applies to any molecule with a large dipole moment. Being a simulation, this is not a problem for Quantemol-N.

Quantemol-Electron Collisions is a python-based software enabling calculations of electron-molecule scattering cross sections using a suite of up to date R-matrix codes (UKRMol+) and other methods such as Binary Encounter Bethe (BEB) model, BEf- scaling and dissociative electron attachment cross-section estimation. It was launched in 2019 and its major differences from Quantemol-N are the use of UKRMol+ instead of UKRMol and utilising Molpro software for molecular target setups. These changes resulted in higher accuracy of calculations and improved usability as molecular geometry optimisation/generation and symmetry identification is performed by Molpro.

Quantemol-EC calculates a variety of observables for electron molecule collisions including:

In the same way as Quantemol-N, Quantemol-EC can be used for closed-shell and open-shell molecules, radicals, neutral and positively charged species.

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