Spin-tagged electron-hydrogen scattering: New measurements of ionisation asymmetries from threshold to 500 eV

Crowe, D. M.; Guo, X.; Lubell, M. S.; Slevin, J; Eminyan, M.

doi:10.1088/0953-4075/23/13/010

Cited by 46 publications

(26 citation statements)

References 14 publications

(5 reference statements)

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“…In fact in the eee method we calculate e-H(ls, 2s) simultaneously. We shall see that in the case of e-He(11S, 2: 3 ,lS) ionisation, we only obtain agreement with measurements of e-He(1 1 S) ionisation, but not (1985) and Crowe et al (1990), respectively. The IERM results are due to Scholz et al (1990), and the pseudostate (PS) results to Callaway and Oza (1979).…”

Section: (4a) Electron-hydrogen Scatteringcontrasting

confidence: 58%

Calculation of Electron Scattering on Atoms and Ions

Bray¹

1996

Aust. J. Phys.

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AbstmctWe present an overview of the application of the convergent close-coupling (CCC) method to electron scattering on light atoms and ions. Particular emphasis is given to those areas where other theories have difficulty, e.g. total ionisation cross sections and the associated spin asymmetries. We begin with the simplest application to the Temkin-Poet model problem of electron-hydrogen scattering, which we use to validate the CCC approach. Subsequently, results are given for electron impact ionisation of various initial states of the targets H(ls, 2s), He(1 1 S,2 3 ,lS), He+(1s), Li(2s), 05+(2s) and Na(3s).

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Section: (4a) Electron-hydrogen Scatteringcontrasting

confidence: 58%

Calculation of Electron Scattering on Atoms and Ions

Bray¹

1996

Aust. J. Phys.

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“…We see good agreement with the measurements of Fletcher et al [19] and Crowe et ol. [20]. The latter work compares the asymmetries with a number of other theories.…”

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confidence: 96%

Calculation of the total ionization cross section and spin asymmetry in electron-hydrogen scattering from threshold to 500 eV

1993

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We present the total ionization cross section and spin asymmetry at projectile energies ranging from threshold to 500 eV for electron-impact excitation of atomic hydrogen. They are calculated using the convergent close-coupling formalism of Bray and Stelbovics [Phys. Rev. A 46, 6995 (1992)]. Both observables are found to be in complete quantitative agreement with measurements over almost the entire energy range. This is the only electron-atom scattering theory that is able to achieve this result to date. [13,14], and that pseudoresonances are simply an indication of an inadequate representation of the target. In the latter paper we applied the CCC method to the full e-H scattering problem in order to 746

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“…Berakdar Representing the final state by WDS3C (W3C) yields for the spin asymmetry the results shown by the short-dashed (dot-dash) curve. The experimental data are due to Fletcher et al (1985) (full squares) and Crowe et al (1990) (open circles).…”

Section: Numerical Resultsmentioning

confidence: 99%

Incorporation of Threshold Phenomena in Three-body Coulomb Continuum Wavefunctions

Berakdar¹

1996

Aust. J. Phys.

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In this work a three-body Coulomb wavefunction for the description of two continuum electrons moving in the field of a nucleus is constructed such that the Wannier threshold law for double escape is reproduced and the asymptotic Coulomb boundary conditions as well as the Kato cusp conditions are satisfied. It is shown that the absolute value of the total cross section, as well as the spin asymmetry, are well described by the present approach. Further, the excess-energy sharing between the two escaping electrons is calculated and analysed in light of the Wannier theory predictions. This is the first time an analytical three-body wavefunction is presented which is asymptotically exact and capable of describing threshold phenomena.

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Spin-tagged electron-hydrogen scattering: New measurements of ionisation asymmetries from threshold to 500 eV

Cited by 46 publications

References 14 publications

Calculation of Electron Scattering on Atoms and Ions

Calculation of Electron Scattering on Atoms and Ions

Calculation of the total ionization cross section and spin asymmetry in electron-hydrogen scattering from threshold to 500 eV

Incorporation of Threshold Phenomena in Three-body Coulomb Continuum Wavefunctions

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