| 摘要 |
A cathode assembly includes a monolithic target having a first surface and a center region. In addition, a sculpted section is formed in the first surface, and the sculpted section is generally recessed from the first surface and extends around the center in a racetrack configuration. The racetrack has a concentric centerline, and the sculpted section preferably is generally symmetric about the centerline. A magnetic field generator is disposed adjacent to the target and produces a magnetic field having an in-plane component. The magnetic field generator is tuned so that a distribution of the magnitude of the in-plane component in a direction transverse to the centerline at a point along the racetrack is characterized by two peaks that have a generally equal magnitude.
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