Abstract

The highly convergent fringing field produced by a 100 kVA C-magnet has been used to guide electrons emitted at a source around a 90° arc to a Si(Li) detector. This source-detector configuration is often desirable because it enables the electron detector to be effectively shielded from other radiations emitted at the source. The electron motion in this device consists of a superposition of a trochoidal motion and a vertical oscillation through the magnet symmetry plane. The high detection efficiency of the system (∼5%) makes it particularly well suited for applications in electron coincidence experiments. Utilization of the device in a study of internal conversion in coincidence with fission is described, and several other applications are suggested.

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