Orientation of hydrogen 2<i>p</i>after tilted-foil excitation

Liu, C. J.; Schüler, K. P.

doi:10.1103/physreva.39.5560

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…Stokes parameters for the incident energy regime of 20 -50 keV. The measurements presented in this section complement the work, performed at higher energies, of Liu, Gay, and Schiiler [13] and Winter and Ortjohann [14] on the tilt-angle dependence of the Lyman-o. radiation, and that of Singer, Dehaes, and Carmeliet [15],Berry et al , [16] and Dehaes, Carmeliet, and Berry [17] on the linear polarization of the Balmer-series lines for normal incidence only.…”

Section: Raman Spectra Of Unirradiated Andsupporting

confidence: 57%

Observation of beam-induced changes in the polarization of Balmer-α radiation emitted following beam–tilted-foil transmission

et al. 1995

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Measurements of the circular polarization of Balmer-u radiation emitted by excited hydrogen atoms, following the transmission of (20 -50)-keV protons through thin, tilted amorphous carbon foils, exhibit markedly unexpected behavior as a function of exposure of the foil to the proton beam. Specifically, the circular polarization changes from an initially well understood tilt-angle dependence to a behavior which, for low tilt angles, gives the opposite handedness of circular polarization from that predicted. In addition, the degree of alignment, indicated by the linear Stokes parameter MII, is enhanced also as a function of dose. These changes in the tilt-angle dependence of the Stokes parameters have been systematically correlated with beam-induced graphitization of the foil, which is observed to occur from Raman measurements.PACS number(s): 34.50.Fa, 78.30.j, 13.88.+e

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Section: Raman Spectra Of Unirradiated Andsupporting

confidence: 57%

Observation of beam-induced changes in the polarization of Balmer-α radiation emitted following beam–tilted-foil transmission

et al. 1995

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Depolarization following electron capture by highly charged ions in a polarized target

Liu¹,

Dunford²

1991

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

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W e analyse the electron-spin depolarization of highly charged hydrogenie and d!d-like iom formed hy singlailectmn capture in an electron-spimpolarized target. In general, ions are formed in highly excited states and are depolarized by the fine and hyperfinestructure interaction as they cascade down to the ground state. The final polarization is determined by the state into which the electmm is captured, the alignment of the excited state formed in the capture process, thenudear spin, and the angle between the target electron-spin polarization vector and the ionbeam axis. We also calculate the polarization of the radiation emitted following polarise4electmn capture. We point out that the circulsr and linear polarization of the emission line can be monitored to determine the polarization of the ions.

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Orientation of hydrogen 2pafter tilted-foil excitation

Abstract: The circular polarization of Lyman-a photons resulting from beam-tilted-foil excited H(2p) was measured at energies between 9 and 20 keV with foil tilt angles up to 60". Various interaction models are used to fit the data, and their physical significance is discussed.

Cited by 2 publications

References 37 publications

Observation of beam-induced changes in the polarization of Balmer-α radiation emitted following beam–tilted-foil transmission

Observation of beam-induced changes in the polarization of Balmer-α radiation emitted following beam–tilted-foil transmission

Depolarization following electron capture by highly charged ions in a polarized target

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