Velocity dependence of the cross sections for Penning and associative ionization of H and D atoms by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">He</mml:mi><mml:mo>(</mml:mo><mml:mn>2</mml:mn><mml:mn /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>)</mml:mo></mml:math>metastable atoms

Fort, Joaquim; Laucagne, J.J.; Pesnelle, A.; Watel, G.

doi:10.1103/physreva.18.2063

Cited by 20 publications

(1 citation statement)

References 26 publications

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“…For comparison, we also show the AI data originating from neutral H and He ( S 2 1,3 ) reactions ( 5) (open triangles) and (6) (full triangles), as were measured by Fort et al [29] with an absolute scale normalized to the total ionization cross section calculated at 0.04 eV. The cross sections are of the same order of magnitude but larger with neutral reactants than with ionic ones.…”

Section: Heh + Formationmentioning

confidence: 94%

Investigation of critical parameters controlling the efficiency of associative ionization

Padellec

Launoy

Dochain

et al. 2017

J. Phys. B: At. Mol. Opt. Phys.

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This paper compiles our merged-beam experimental findings for the associative ionization (AI) process from charged reactants, with the aim of guiding future investigations with e.g. the double electrostatic ion storage ring DESIREE in Stockholm. A reinvestigation of the isotopic effect in H−(D−) + He+ collisions is presented, along with a review of and NO+ production by AI involving ion pairs or excited neutrals, and put in perspective with the mutual neutralization and radiative association reactions. Critical parameters are identified and evaluated for their systematic role in controlling the magnitude of the cross section: isotopic substitution, exothermicity, electronic state density, and spin statistics.

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Section: Heh + Formationmentioning

confidence: 94%