New features are longer beam paths, precise symmetric lattice orientation and the use of several higher order reflections.
The interferometer can be utilized in one- or two-loop configuration at different wavelengths (2.7, 1.36, 0.9 and 0.7 Å) by selecting (2 2 0) or higher order reflections (4 4 0), (6 6 0) and (8 8 0), without changing the beam geometry.
MREs were rare probably because of the smaller power of the higher order reflections (typically seventh- or eighth-order reflections) which might be below the sensitivity level of the instrument.
The ionograms often reveal the presence of additional traces situated close to the F region trace (1F trace) and its higher order reflections, which are known as satellite traces (STs) (Lyon et al. [1961]; Abdu et al. [1981]).
Other reflections in these patterns may be higher order reflections from the lead carboxylate structure or unreacted carboxylic acid.From the above we see that the lead tetradecanoate coating forms immediately on the application and evaporation of the solution thus providing a rapid treatment (no soaking is required).
The higher order reflections clearly indicated the presence of the LPP with and without acetone treatment.
Therefore, in our multiplexed FPIs, signals due to higher order reflections are small and therefore can be neglected in the following analysis.
Furthermore, the absence of peaks other than higher order reflections indicates, in analogy to the case with EtOH, evidence for the presence of defined texture also for the SIP.
Frequently, such experiments reveal a single peak series (diffraction from one set of netplanes (hkl) and its higher order reflections), which is indicative of a unique crystalline orientation (texture) in the film.
Specular X-ray diffraction scans of the samples prepared from the 1.0% wt solution reveal just peaks corresponding to the 002 and higher order reflections independent of the solvent removal time (see Figure 4).
The annealed sample clearly shows presence of primary and higher order peaks indicating a long-range order, whereas the profile of the sheared and quenched sample shows absence of higher order reflections indicating that the long-range order associated with the BCC lattice is lost due to shear even at very low shear rates.
