If the electron beam is spin-polarized in the direction perpendicular to the

scattering plane, the number of electrons to be detected by each counter may differ.

We generalize the transition function of Fresnel reflection to bistatic scattering plane. The location of the dips in scattering plane is accurately predicated, and the scattering pattern has been studied more extensively.

The dislocation of the dip in azimuth scattering plane by SPM predictions is understood for their invalid at this roughness scale.

To demonstrate this measurement mode, we collected data on a single crystal of overdoped (Ba-K) [Fe.sub.2] [As.sub.2] in the (H, H, L) scattering plane (17).

15 (bottom) at an energy transfer of 4 meV, the wave vector range of the data is more along the (H, H) direction in this (H, H, L) scattering plane, as shown by the red line in Fig.

These 'strands' are the Fourier images of the shape of the scattering object of the boundaries or of the projections onto the

scattering plane. In particular, these boundaries are represented by the walls of the crystallographically oriented pores.

The plotted curve has the maximum forwardscattering, and oscillates with a smaller amplitude as the angle between the scattering plane and incident plane increases.

Figure 2 shows the normalized differential scattering cross sections no [pi][sigma]([theta],[phi])/[lambda].sup.2] in three scattering planes ([phi],[pi]/4,[pi]/2), for incidence of a Gaussian beam with [w.sub.0] = 2[lambda] (wavelength X = 0.6328 [micro]) on a dielectric spheroidal particle.

The refractive index and particle size were determined from best fits of Mie theory predictions to the scattering data for the incident laser polarization direction both parallel to the

scattering plane and perpendicular to the

scattering plane [5].

The [[??].sub.TE] and [[??].sub.TM] denote two orthogonal unit vectors of TE and TM polarized waves corresponding to the

scattering plane, as described by [[??].sub.TE] = [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] and [[??].sub.TM] = [[??].sub.TE] x [[??].sub.R]/[k.sub.i].