J
Jonathan Tennyson
Researcher at University College London
Publications - 1061
Citations - 52361
Jonathan Tennyson is an academic researcher from University College London. The author has contributed to research in topics: Ab initio & Excited state. The author has an hindex of 97, co-authored 1007 publications receiving 47077 citations. Previous affiliations of Jonathan Tennyson include SERC Reliability Corporation & University of Helsinki.
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Non-equilibrium H$_2$ formation in the early Universe: energy exchanges, rate coefficients and spectral distortions
TL;DR: In this article, the effects of a non-thermal distribution of the level populations of H$_2$ in the early universe were investigated. And the authors concluded that non-equilibrium processes cannot be ignored in cosmological simulations of the evolution of baryons, although their observational signatures remain below current limits of detection.
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Calculating quasi-bound rotation-vibrational states of HOCl using massively parallel computers
Hamse Y. Mussa,Jonathan Tennyson +1 more
TL;DR: In this article, positions and predissociation widths for quasi-bound states of HOCl with total angular momentum of J = 0 and J = 3 were calculated by diagonalising a complex symmetric Hamiltonian using PDVR3D.
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Calculating energy levels of isomerizing tetra-atomic molecules. I. The rovibrational bound states of Ar2HF
TL;DR: In this article, a general six-dimensional computational method for the accurate calculation of rotationally and vibrationally excited states of tetra-atomic molecules is developed, particularly appropriate for molecules executing wide-amplitude motions and isomerizations.
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Fully vibrationally resolved photoionisation of H2 and D2
TL;DR: In this article, the authors used the R-matrix method to compute the total cross sections and asymmetry parameters of H2 and D2 molecules in several vibrational states by 584 A radiation.
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Relative equilibria of D2H+ and H2D+
TL;DR: In this article, a classification of the symmetry types of relative equilibria of AB(2) molecules is given and the relative equilibrium bifurcation diagrams and normal mode frequencies for D2H+ and H2D+ are then fed into a harmonic quantization procedure.