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Parametrization for spin observation

1 Parametrization for spin observation In analogy with the parametrization of the angle-dependent partial cross section for photoionization discussed in connection with equ. (1.50), the parametrization for the additional observation of the electron spin has to be worked out. It depends on [Pg.229]

With these introductory definitions, the general parametrization can be represented as [HJC81]  [Pg.229]

The spin-dependent terms of the photoionization process are those associated with the spin-dependent Stokes parameters of the detector. There it can be seen that [Pg.229]

From the formulas listed, the components Px., Pr and Pz. of the photoelectron s spin-polarization vector P defined in the /, z detector frame can be calculated (for the definition of P see Fig. 1.5 and equ. (9.15)). If tr stands for transverse, long for longitudinal, and if the subscripts and 1 indicate the component within or perpendicular to the scattering plane, respectively, one gets1  [Pg.230]

From these relations it can be seen that only circularly polarized light (nonvanishing S3) allows the determination of all spin-polarization parameters, , rj, C linearly polarized (St = 1) or unpolarized light (Sj = S3 = 0) yields only tj. Therefore, a complete experiment for 5p3/2 photoionization in xenon, where a, / , t], are needed, relies on the availability of circularly polarized synchrotron radiation. [Pg.230]




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