Kinetic-energy release of fragments from electron-impact dissociation of the molecular hydrogen ion and its isotopologues

Scarlett, Liam H.; Zammit, Mark C.; Fursa, Dmitry V.; Bray, Igor

doi:10.1103/PhysRevA.96.022706

Title: Kinetic-energy release of fragments from electron-impact dissociation of the molecular hydrogen ion and its isotopologues

Journal Article · 17 August 2017 · Physical Review A

DOI: https://doi.org/10.1103/PhysRevA.96.022706 · OSTI ID:1514929

Scarlett, Liam H. ^[1]; Zammit, Mark C. ^[2]; Fursa, Dmitry V. ^[1]; Bray, Igor ^[1]

Curtin Univ., Perth, WA (Australia). Curtin Inst. for Computation. Dept. of Physics, Astronomy and Medical Radiation Sciences
Curtin Univ., Perth, WA (Australia). Curtin Inst. for Computation. Dept. of Physics, Astronomy and Medical Radiation Sciences; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We calculate here the kinetic-energy release distributions of fragments produced for electron-impact dissociation of the vibrationally excited molecular hydrogen ion $${{\mathrm{H}}_{2}}^{+}$$ and its isotopologues $${{\mathrm{D}}_{2}}^{+}$$ and $${{\mathrm{T}}_{2}}^{+}$$. Here we apply the adiabatic-nuclei convergent close-coupling method and compare results with several different methods, including the $${\delta}$$ approximation. Results are presented for a number of dissociative excitation transitions and dissociative ionization as a function of the initial vibrational state of the molecule. We confirm that the square root approximation is a good approximation for the adiabatic-nuclei kinetic-energy release cross sections of $${{\mathrm{H}}_{2}}^{+}$$. Agreement with experiment, where available, is good.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Curtin Univ., Perth, WA (Australia)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); Australian Research Council

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1514929

Alternate ID(s):: OSTI ID: 1375556

Report Number(s):: LA-UR--17-23201

Journal Information:: Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 96; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Electron-impact dissociative excitation cross sections for singlet states of molecular hydrogen Tapley, Jonathan K.; Scarlett, Liam H.; Savage, Jeremy S. Physical Review A, Vol. 98, Issue 3 https://doi.org/10.1103/physreva.98.032701	journal	September 2018
Calculations of positron scattering on the hydrogen molecular ion Mori, N. A.; Utamuratov, R.; Scarlett, L. H. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 53, Issue 1 https://doi.org/10.1088/1361-6455/ab53a8	journal	January 2019
Low-energy electron-impact dissociative excitation of molecular hydrogen and its isotopologues Scarlett, Liam H.; Tapley, Jonathan K.; Fursa, Dmitry V. Physical Review A, Vol. 96, Issue 6 https://doi.org/10.1103/physreva.96.062708	journal	December 2017
Convergent close-coupling approach to light and heavy projectile scattering on atomic and molecular hydrogen Bray, I.; Abdurakhmanov, I. B.; Bailey, J. J. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 50, Issue 20 https://doi.org/10.1088/1361-6455/aa8a23	journal	October 2017
Electron-impact dissociation of molecular hydrogen into neutral fragments Scarlett, Liam H.; Tapley, Jonathan K.; Fursa, Dmitry V. The European Physical Journal D, Vol. 72, Issue 2 https://doi.org/10.1140/epjd/e2017-80649-8	journal	February 2018
Vibrationally resolved electron-impact excitation cross sections for singlet states of molecular hydrogen Tapley, Jonathan K.; Scarlett, Liam H.; Savage, Jeremy S. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 51, Issue 14 https://doi.org/10.1088/1361-6455/aac8fa	journal	June 2018

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Title: Kinetic-energy release of fragments from electron-impact dissociation of the molecular hydrogen ion and its isotopologues

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