Importance

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Abstract

A photomultiplier includes a solid disk dynode and a pair of annular guiding electrodes disposed about the disk dynode transversely along the central axis of the photomultiplier tube on opposite sides of the dynode. The secondary and subsequent dynodes may be of conventional (e.g. venetian blind) construction or of solid disk construction. The solid disk dynode and guiding structure exhibits improved photoelectron pulse-height resolution and a better signal-to-noise ratio than a conventional venetian blind type dynode. In addition, the solid dynode structure is less susceptible to physical shock than conventional photomultiplier dynode designs.

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First Claim