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Mossbauer absorber thickness has been optimised by considering Nowik's model of bounded diffusion. It is observed that optimum thickness T0 is dependent on alpha , which is the ratio of harmonic force constant to damping force constant and the variation between T0 and alpha has been obtained for various values of absorption cross section.

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It is well known that a coil shape generated by two overlapping ellipses produces the perfect dipole magnetic field. Similarly, a coil shape generated by two perpendicular and concentric intersecting ellipses produces the perfect quadrupole field. However, for a sextupole no such coil shape is available in the literature. We give here a coil shape for generating the perfect sextupolar magnetic field.