Alignment of atoms following photoionisation: Cd+(4d
−1
2
D
5/2,2
D
3/2) and Zn+(3d
−1
2
D
3/2)

Kronast, W.; Huster, R.; Mehlhorn, W.

doi:10.1007/bf01426233

Cited by 42 publications

(12 citation statements)

References 32 publications

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“…In photoionization the alignment was first observed in Cd by Caldwell and Zare [4]. Recent photoionization experiments have used synchrotron radiation for measurements of the alignment [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Most of the experimental results were basically in agreement with the theoretical calculations [20][21][22][23].…”

Section: Introductionsupporting

confidence: 61%

Alignment following Au L₃photoionization by synchrotron radiation

Yamaoka

Oura

Kondo

et al. 2003

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

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The alignment of Au + ions following L 3 photoionization has been studied using a high-resolution x-ray spectrometer. We observed a small anisotropy for the angular dependence of Au L ι and Lα emissions. The alignment parameter A 20 derived from the experimental results is compared with theoretical calculations by Hartree-Fock approximation and random phase approximation with exchange. The contribution to the alignment of quadrupole interaction is discussed.

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Section: Introductionsupporting

confidence: 61%

Alignment following Au L₃photoionization by synchrotron radiation

Yamaoka

Oura

Kondo

et al. 2003

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

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“…All these features are found to be very similar compared to the case of the linear polarization of radiation emitted by a polarized electron bremsstrahlung process [40], where the results for both observables show a high sensitivity on the initial electron spin polarization and prove that the PT is independent of the photon energy. Moreover, we see that the present results for the Zn + ion are in good agreement with the available experimental values [43].…”

Section: Resultssupporting

confidence: 92%

“…To our knowledge, there is no other theoretical analysis and only one experimental set of data available for comparison. We can see that our present theoretical results agree well with the experimental value [43] for Zn + ions, with a discrepancy less than 1.3%.…”

Section: Resultssupporting

confidence: 88%

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Chen

Xie

et al. 2018

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

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Using the density matrix theory and the multi-configuration Dirac-Fock method, the d 3 3 2 subshell photoionization of highly charged ions is studied, together with their subsequent radiative decay. The effects of polarization transfer on the linear polarization and angular distribution of the  d s D d p P 3 4 3 4 9 2 2 3 2 10 2 1 2 characteristic line photoemission for selected Cu-like Zn + , Ba 27+ , + W 45 , and + U 63 ions are investigated. Our results show that the polarization transfer, arising from the originally polarized incident light, may lead to a considerable change in the alignment parameters and the polarization properties of the radiation, the character of which is highly sensitive to the initial photon polarization, yet virtually independent of the photon energy. These characteristics are very similar to those of the electron bremsstrahlung process reported by Märtin et al (2012 Phys. Rev. Lett. 108 264801). The present results are compared with available experimental results and show a good quantitative agreement.

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“…These quantities together with the partial photoionization cross section s make it possible to derive matrix elements for continuum s and d electrons and the cosine of their relative phase. Related experiments employ the polarization of the fluorescence radiation instead of the angular distribution of the Auger electrons [14]. A new type of complete photoionization experiments of this kind has only recently been reported based upon a coincidence analysis of photoelectrons and flourescence photons from the decay of exited 2 P 3͞2 -state ions [15,16].…”

mentioning

confidence: 99%

Magnetic Dichroism in the Angular Distribution of Atomic Oxygen2pPhotoelectrons

et al. 1996

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A substantial difference in the angular distributions of 2p photoelectrons from polarized oxygen atoms was found for two antiparallel atomic polarizations. This magnetic dichroism was studied as a function of photon energy from 25 to 52 eV. Our method extends traditional photoelectron angular distribution measurements of open shell atoms to "complete" experiments in similar to spin-resolved measurements. The observed dichroism allows a determination of the dipole matrix elements for the es and ed photoelectrons and their phase difference including the sign. [S0031-9007(96)01267-7] PACS numbers: 32.80.Fb Photoionization and atomic collision processes can be completely described quantum mechanically by a limited number of amplitudes and their phase differences and thus the experiment from which the relevant amplitudes and phases can be extracted has been referred to as a "complete" experiment [1,2]. This possibility was first realized in the early electron-atom collision experiments of Eminyan et al. [3] and Standage and Kleinpoppen [4]. The first complete experiment in photoionization of atoms in the dipole approximation was reported by Heinzmann and co-workers [5,6], who measured the angular distribution and the spin polarization of photoelectrons for Xe 5p photoionization. The complete information in the latter experiment is obtained from the spin polarization of the photoelectron (providing up to three further parameters of the photoionization process besides the cross section and angular distribution). The first experiment of this kind was followed by a series of further studies with a main emphasis on rare gas atoms. A complementary method for complete atomic photoionization experiments employs the polarization of the target atoms. The sensitivity of this method to additional photoionization parameters depends on the target preparation instead of the detection sensitivity to spin polarization. We refer for this class of experiments to the work of Klar and Kleinpoppen concerning the complete analysis of the relevant amplitudes and phases [7]. Successful experiments using polarized targets have first been reported [8-11] using laser excitation for the preparation of the initial state. However, these experiments focused predominantly on resonant photoionization processes where the information on matrix elements and phases is largely reduced. An alternative approach to such a complete analysis of nonresonant photoionization has been reported by Hausmann et al. [12] and Becker [13]; in their photoionization experiments on atomic magnesium and argon the angular distributions of the photoelectrons and Auger electrons provide the angular distribution asymmetry parameter b and the alignment parameter A 20 . These quantities together with the partial photoionization cross section s make it possible to derive matrix elements for continuum s and d electrons and the cosine of their relative phase. Related experiments employ the polarization of the fluorescence radiation instead of the angular distribution of the Auger ele...

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Alignment of atoms following photoionisation: Cd+(4d −1 2 D 5/2,2 D 3/2) and Zn+(3d −1 2 D 3/2)

Cited by 42 publications

References 32 publications

Alignment following Au L₃photoionization by synchrotron radiation

Alignment following Au L₃photoionization by synchrotron radiation

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Magnetic Dichroism in the Angular Distribution of Atomic Oxygen2pPhotoelectrons

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Alignment of atoms following photoionisation: Cd+(4d −1 2 D 5/2,2 D 3/2) and Zn+(3d −1 2 D 3/2)

Cited by 42 publications

References 32 publications

Alignment following Au L3photoionization by synchrotron radiation

Alignment following Au L3photoionization by synchrotron radiation

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Magnetic Dichroism in the Angular Distribution of Atomic Oxygen2pPhotoelectrons

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Product

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Alignment following Au L₃photoionization by synchrotron radiation

Alignment following Au L₃photoionization by synchrotron radiation