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Furse, Cynthia M.; Gandhi, Om P. | Improvements to the finite-difference time-domain method for calculating radar cross section of a perfectly conducting target | Abstract -The finite-difference time-domain (FDTD) method has been used extensively to calculate scattering and absorption from both dielectric objects and perfectly conducting objects. Several improvements to the FDTD method for calculating the radar cross section (RCS) of a perfectly conducting ta... | Finite-difference time-domain method; FDTD; RCS; Perfectly conducting target | 1990-07 |
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Liu, Feng | Quantum size effect on the magnetism of finite systems | The magnetic moments of the ferromagnetic transition metals Fe, Co, and Ni confined to one-dimensional chains are found to fluctuate with increasing chain length before converging to the infinite limit. This quantum size effect is derived from a simple first-principles theory that we have developed... | Quantum size; Finite systems; Ferromagnetic transition metals; Magnetic moments; Fe; Co; Ni; Molecular-orbital approach | 1990-07 |