Electron-photon angular correlation in atomic physics

Blum, K.; Kleinpoppen, Hans

doi:10.1016/0370-1573(79)90031-0

Cited by 202 publications

(63 citation statements)

References 38 publications

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“…A full discussion has been given by Blum and Kleinpoppen (1979) and Slevin (1984). The aim of the present measurements was to completely characterise the excited 2P state, apart from the undetected electron spin.…”

Section: Measurement Of the 2p State Of Atomic Hydrogenmentioning

confidence: 99%

“…A full description of the problem has been given by Blum and Kleinpoppen (1979) and Slevin (1984). Considerable interest exists in the measurement which requires the observation of the initial coherence between states of opposite parity in the presence of an external field to mix the states.…”

Section: Stark-mixed 2s and 2p Statesmentioning

confidence: 99%

“…Eminyan et al (1974) showed how the measurements could be made for the 21 P state of helium. Subsequently many people, for example, Blum and Kleinpoppen (1979), Herman and Hertel (1982) and Andersen et al (1985), have discussed the coherence of the excited states, the symmetry properties of the scattering process, the angular momentum transfer in the collision and the interpretation of the angular, and polarisation, correlations in terms of the shape and orientation of the electron charge cloud of the excited state. The topic has been reviewed most recently by Hanne (1983) and Slevin (1984).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Measurement Of the 2p State Of Atomic Hydrogenmentioning

confidence: 99%

Section: Stark-mixed 2s and 2p Statesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Williams¹

1986

Aust. J. Phys.

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“…The theory of electron-photon coincidence experiments has been discussed previously by Macek and Jaecks (1971), Fano and Macek (1973) and Blum and Kleinpoppen (1979) and only a brief description of its application to the excitation of the 1 P states will be given.…”

Section: Angular Correlations From 1 P Statesmentioning

confidence: 99%

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

McAdams¹,

Williams²

1982

Aust. J. Phys.

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“…Successive developments of this theory have been given by Fano (1957), Macek and laecks (1971), Fano and Macek (1973), Gabrielse and Band (1977) and Blum and Kleinpoppen (1979). Only the basic results, mainly following Blum and Kleinpoppen are given here.…”

Section: Excited State Multipolesmentioning

confidence: 99%