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 · Fri Aug 18 00:00:00 EDT 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 Laboratory (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, Vol. 96, Issue 2; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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