A 30% by weight solution of tetramethylammonium perfluorononanoate in D20 (TMAHFN; CsF17COON-(CH3)4) is in a lamellar state below 33 "C. In this state the repeat distance and the thickness of the perfluoronated part of the micellar lamellae are around 7.11 and 2.14 nm, respectively. In the presence of a strong magnetic field of 2.0 T a slow reduction of the sample temperature from 40 "C (isotropic phase) via 34 "C (nematic phase) down to 25 "C gives a strong alignment of the nematic and lamellar liquid crystalline phases. By small angle neutron scattering (SANS) and small angle X-ray scattering (SAXS) experiments, an order parameter, the mean scattering length density across the lamellae, the structure factor related to the one-dimensionality of the lamellar phase, and information about the perforation of the lamellae could be extracted. A model taking into account all+these effects quantitatively describes the experimental scattering intensity distribution in reciprocal space (Q space) accessible in our experimental setup. Furthermore, for the nematic phase we can extract detailed data on the anisotropic correlation between neighboring discotic micelles. The scattering intensity distribution of the isotropic phase can be described quite satisfactorily again assuming diskiike micelles, where the perfluoronated part of the micelle has a thickness of 2.4 nm and a radius of about 3.0 nm.