Associative ionization in the collision of H(1s) with H(3s) and D(1s) with D(3s)

Nehari, Driss;Brouillard, F.;Jureta, Jozo;Urbain, Xavier
(2002) Journal of Physics B: Atomic, Molecular and Optical Physics — Vol. 35, n° 22, p. 4733-4742 (2002)

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Authors
  • Nehari, DrissUCLouvain
    Author
  • Brouillard, F.UCLouvain
    Author
  • Jureta, JozoUCLouvain
    Author
  • Author
Abstract
The absolute cross section for associative ionization in H(1s) + H(3s) and D(1s) + D(3s) collisions has been measured, in the energy range 0.006-3.6 eV, in a merged beam apparatus. The 3s state is populated by exciting metastable atoms, with CW laser radiation, in a static field. For both isotopes, the cross section exhibits an E-1 behaviour at low energy, and a faster decrease above the ionization threshold of the 3s state. In the intermediate energy region, isotope-dependent oscillations of the cross section are observed, which we attribute to interferences between several reaction pathways.
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Citations

Nehari, D., Brouillard, F., Jureta, J., & Urbain, X. (2002). Associative ionization in the collision of H(1s) with H(3s) and D(1s) with D(3s). Journal of Physics B: Atomic, Molecular and Optical Physics, 35(22), 4733-4742. https://doi.org/10.1088/0953-4075/35/22/314 (Original work published 2002)