Details

Autor(en) / Beteiligte

• Poole, B.R.
• Nelson, S.D.
• Langdon, S.

Titel

Advanced Electric and Magnetic Material Models for FDTD Electromagnetic Codes

Ist Teil von

• Proceedings of the 2005 Particle Accelerator Conference, 2005, p.2639-2641

Ort / Verlag

IEEE

Erscheinungsjahr

2005

Quelle

IEEE/IET Electronic Library

Beschreibungen/Notizen

• The modeling of dielectric and magnetic materials in the time domain is required for pulse power applications, pulsed induction accelerators, and advanced transmission lines. For example, most induction accelerator modules require the use of magnetic materials to provide adequate Volt-sec during the acceleration pulse. These models require hysteresis and saturation to simulate the saturation wavefront in a multipulse environment. In high voltage transmission line applications such as shock or soliton lines the dielectric is operating in a highly nonlinear regime, which require nonlinear models. Simple 1-D models are developed for fast parameterization of transmission line structures. In the case of nonlinear dielectrics, a simple analytic model describing the permittivity in terms of electric field is used in a 3-D finite difference time domain code (FDTD). In the case of magnetic materials, both rate independent and rate dependent Hodgdon magnetic material models have been implemented into 3-D FDTD codes and 1-D codes.