Large Momentum Transfer Excitation of He(31P) by Electron Impact at 81· 2 eV Incident Energy

McAdams, R.; Williams, J. F.

doi:10.1071/ph820513

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Measurements In Helium1

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1986

1988

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“…The apparatus, used in similar studies by McAdams and Williams (1982), has been improved by adding multiple photon detectors, as indicated in Fig. 2.…”

Section: Measurements In Heliummentioning

confidence: 99%

Polarisation and Angular Correlations of Excited P States of Helium and Hydrogen

Williams¹

1986

Aust. J. Phys.

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Aust. J. Phys., 1986, 39, 621-32 The techniques associated with angular and polarisation correlations have been used to study the electron impact excitation of the 21 P state of helium and the 2P state of hydrogen. The circular, and linear, polarisations of the 58·4 and 121·6 nm radiation have been measured with a double reflection analyser. The measurements have better statistical accuracy than previous work and, for helium at 81·2 eV and a large scattering angle of 108·, confirm that theoretical values are still outside the statistical accuracy of measurement. In hydrogen, the first complete determination of the elements of the 2P density matrix elements is reported. The parameters fl., Re, Im and the absolute value of 0'(2p) have been measured. No single theory is able to predict the scattering angle dependence above 70·.

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“…The apparatus, used in similar studies by McAdams and Williams (1982), has been improved by adding multiple photon detectors, as indicated in Fig. 2.…”

Section: Measurements In Heliummentioning

confidence: 99%

Polarisation and Angular Correlations of Excited P States of Helium and Hydrogen

Williams¹

1986

Aust. J. Phys.

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Collisional alignment and orientation of atomic outer shells I. Direct excitation by electron and atom impact

1988

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A feasibility study of the measurement of the Stokes' parameters of the 3³P, 3¹D and 3³D states of helium

Humphrey

Williams

Heck

1987

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

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Large Momentum Transfer Excitation of He(31P) by Electron Impact at 81· 2 eV Incident Energy

Cited by 3 publications

References 2 publications

Polarisation and Angular Correlations of Excited P States of Helium and Hydrogen

Polarisation and Angular Correlations of Excited P States of Helium and Hydrogen

Collisional alignment and orientation of atomic outer shells I. Direct excitation by electron and atom impact

A feasibility study of the measurement of the Stokes' parameters of the 3³P, 3¹D and 3³D states of helium

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Large Momentum Transfer Excitation of He(31P) by Electron Impact at 81· 2 eV Incident Energy

Cited by 3 publications

References 2 publications

Polarisation and Angular Correlations of Excited P States of Helium and Hydrogen

Polarisation and Angular Correlations of Excited P States of Helium and Hydrogen

Collisional alignment and orientation of atomic outer shells I. Direct excitation by electron and atom impact

A feasibility study of the measurement of the Stokes' parameters of the 33P, 31D and 33D states of helium

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A feasibility study of the measurement of the Stokes' parameters of the 3³P, 3¹D and 3³D states of helium