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Code Number: 7D30.95
Demo Title: Photomultiplier Tubes and NaI Crystals
Condition: Good
Principle: Detectors
Area of Study: Modern Physics
Equipment:
Photomultiplier Tubes, NaI Crystals, Mu-Metal Shields.
Procedure:
See also: 9B20.30 in Facilities Support.
The NaI crystals should be kept in a reseal able plastic bag to prevent water absorbing into and degrading the crystals. The Mu-Metal shields are made of a special alloy that helps prevent the penetration by magnetic fields. These are used routinely around photomultiplier tubes as magnetic shields.
References:
- Mary Lowe, Alex Spiro, Peter Kutt, "Gamma Camera Imaging in an Undergraduated Physics Course", AJP, Vol. 90, #1, Jan. 2022, p. 51.
- G. C. Chikkur, M. T. Lagare, and N. Umakantha, "Fluorescence Spectrum of NaI(TI) Crystal: A Laboratory Experiment", AJP, Vol. 47, #8, Aug. 1979, p. 715.
- P. Venkataramaiah, H. Sanjeeviah, and B. Sanjeevaiah, "Energy Dependence of the Relative Halfwidth of Gamma-Ray Lines in NaI (TI) Crystals - A Laboratory Experiment", AJP, Vol. 46, # 3, Mar. 1978, p. 292.
- Donal J. Burns, James M. Reynolds, "Simple Experiment to Introduce the Photomultiplier", AJP, Vol. 44, #7, July 1976, p. 649.
- John H. Moore, Christopher C. Davis, Michael A. Coplan, "Photoemissive Detectors", Building Scientific Apparatus 2nd Edition, pp. 260 - 271.
- Stilbene Crystal, "A Crystal That Detects Nuclear Radiation (No, Really), Popular Science, Dec. 2015.