Scintillation counter: photomultiplier tube alignment
Patent
·
OSTI ID:4168574
A scintillation counter, particularly for counting gamma ray photons, includes a massive lead radiation shield surrounding a sample-receiving zone. The shield is disassembleable into a plurality of segments to allow facile installation and removal of a photomultiplier tube assembly, the segments being so constructed as to prevent straight-line access of external radiation through the shield into the sample receiving zone. Provisions are made for accurately aligning the photomultiplier tube with respect to one or more sample-transmitting bores extending through the shield to the sample receiving zone. A sample elevator, used in transporting samples into the zone, is designed to provide a maximum gamma-receiving aspect to maximize the gamma detecting efficiency. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-000720
- Assignee:
- to Packard Instrument Co., Inc.
- Patent Number(s):
- US 3890505
- OSTI ID:
- 4168574
- Country of Publication:
- United States
- Language:
- English
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