The observational data (e.g., the timing data and magnetic tilt angles chi) of young pulsars can be used to probe some critical issues about the internal physics of neutron stars (NSs), for instance, the number of precession cycles xi and the internal magnetic field configuration (IMFC) of NSs. Evolution of the dipole magnetic field B-d of NSs may play an important role in determining the final results. In this work, a power-law form is adopted to describe the decay of B-d. In such a scenario, the IMFC and xi of young pulsars with an ordinary B-d similar to 1012-1013 G and a steady braking ind...
